In our pursue to post the main infrastructure industries in the kingdom with top of the line water system production lines and technology, The Saudi Pipe System company was established according to a pre calculated plans and a set of goals.   Acting on our believes, and with the support of our great government Saudi Pipe System company has successfully established its manufacturing plants in Jeddah industrial city.

The first factory:

The valves factory is located on 11250 square meters lot at Jeddah industrial city phase five.  The Saudi pipe system co "valve factory" specializes in the processing and production of all types of valves, pipe fitting, pipe clamps, and flanges. All which is essential for water, sewer, fire fighting systems, and central air condition systems.

The second factory:

Saudi pipe system co "casting factory" is located on 13500 square meters lot at Jeddah industrial city phase four. This factory is a major producer of engineered casting of variety of metals (ferrous& non ferrous. E.g. cast iron, aluminum, and copper).

 Production line for SPS-CASTING FACTORY-consist of:

- Fully automatic casting production line.

- Three induction furnaces with melting capacity of 2 tons/hour each.

- Complete pattern making shop (equipments and expert engineers).

- Complete core making shop (equipments and expert).

- Complete finishing shop (equipments and experts).

- Complete testing and quality control laboratory.

 The third factory:

 Cost of steel pipes have steadily increased over the past few years. Likewise, handling installation, unreliable joints, lining failure, and corrosion have led to increased difficulty in pipe applications. In this light, SPS took the initiative of establishing the highest quality FIBERGLASS REINFORCED POLYESTER (FRP) PIPES .Its design philosophy is to provide products with suitable properties with the required margin of safety. These will enable the pipe to perform satisfactorily after an extended period of operation (more than 50 years) under typical service conditions.

 SPS IS COMMITTED TO SUPPLYING PRODUCTS AND SERVICES OF THE HIGHEST QUALITY WITH MAXIMUM RESPECT FOR THE ENVIRONMENT.

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Components:

Three base materials are used for the pipes having distinct characteristics:

• Polyester thermosetting resin being of three types: isophthalic, bisphenolic, and vinyl ester.

• Continuous fiberglass roving

• Silica sand ( OPTIONAL )

  Standards:   

The SPS pipes produced in our plant are manufactured in glass reinforced thermosetting resin (GRP) by the '' Filament Winding '' system. Reference is made to the following international standards.

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Our SPS Pipes are manufactured through the Filament Winding process. This is when the fiberglass roving impregnated with resin drives back and forth past a rotating mandrel axis and is controlled by the relative translations speed of the bath and rotational speed of the mandrel. The 80th operations are controlled by a computerized electromechanical system. Quality control is guaranteed by controls and tests carried out automatically and continuously during production. Any deviation, anomaly, or malfunction causes an immediate stop in production.  

 * for diameters and capacities higher than above contact our technical department  

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NOMINAL DIAMETER

SPS pipes are manufactured in diameters ranging from 25 mm to 3000 mm.

Nominal diameter coincides with the internal diameter.

Any nominal diameter can be manufactured.

Larger diameters can be manufactured at site by means of special equipments.

 NOMINAL PRESSURE CLASSES

Pressure pipes are classified according to nominal pressure.

Nominal pressure classes are 4, 6, 10, 16, 20, 25  (bars).

Intermediate or higher pressure classes are considered on request or depending on the design conditions.

SPECIFIC PIPE STIFFNESS CLASSES

Pipes are also classified according to specific pipe stiffness.

Specific pipe stiffness classes are 1250, 2500, 5000 and 10000 Pa.

Intermediate or higher specific pipe stiffness classes are available on request or depending on the design conditions.

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Services

The engineering department of SPS can assist the customers in all stages of their projects and is able to issue (but not limited to) the following documentation :

- Stress analysis on aerial / buried GRP piping system by means of Caesar 11 program

- Calculation of buried pipes according to AWWA (2950/95

- Calculation of aerial pipes, installed on supports

- Hydraulic calculations according to usual formulae

- (Hazen- Williams Colebrook , Manning Kutter, etc.)

- Standards and specifications

- Drawings in AutoCAD format

Field Assistance

SPS experts are able to provide assistance during the following field activities:

- Installation

-  Lamination

- Site hydro-test 

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* Water Distribution both Civil and Industrial

* Sewer System both Urban and Industrial

* Irrigation Networks

* Water Intakes for Cooling Water System

* Waste Water Out-falls to Sea

* Sea lines and River Crossing

* Process Lines for Industrial Plants

* Corrosive Fluids and Vent Gas Stacks

* Wells Casing and Wells Pump Riser

* Penstocks

* FGD (FIue Desulphurization)

* Gasoline Handing and Distribution Networks

* Flue Gas Stack

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Only SPS pipes are fitted with pressure-test nipple. Upon installation of the pipe joints, it is possible to pressurize the cavity between "O" rings. This seal check gives great installation reliability and eliminates leakages that might occur during the final hydrotest. This unique system thus allows the contractor to backfill the trench as soon as the joint integrity is assured.

Hydraulic sealing is performed by means of two elastomeric "O" Rings, installed in the circumferential parallel grooves. The locking device which is made of nylon is inserted through a bell opening into the hoop groove. This joint is designed to be resistant to axial forces.

The walls of SPS pipes are made of a monolithic layer produced with three structures:

* LINER - internal layer in contact with the fluid

* MECHANICAL RESISTANT LAYER

- determines the mechanical

characteristics of the pipe

* GEL COAT - external protective layer, containing U.V. inhibitors

Glass materials do not require particular storage conditions and do not present particular stability problems. Nevertheless it is advisable a storage room having a temperature not higher than 40 Degree C and a humidity not higher than 75%.

Resins are to be stored in their original drums, which guarantees the absolute dark. Glass materials are to be stored in their original packages. Both drums and packages must be opened provided the product is going to be used within a short time.

Welding materials are highly flammable. They must be protected from exposure to conditions, which might produce combustion, such as open flames and heat sources.

Promoter material shall not be stored in the same area as other weld materials, particularly the organic peroxides.

Pipe lifting is done with slings of adequate strength and of such construction as not to damage pipe.

Straight continuous lengths of pipe are capable of being lifted at one point. However, due to the very smooth surface, it is safer to lift pipes at two points symmetrical with respect to pipe center.

Running of lifting rope inside the pipe shall never occur.

Pipe assemblies fabricated of multiple sections may require two points lifting.

While handling the pipes, impacts must be avoided, particularly of pipe ends.

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The use of bell and spigot joints with double O-Ring seal allows an easy and quick installation, which can be performed by any pipes fitter even without any specific experience with GRP pipes.

Thanks to the '' built-in  testing device, the hydraulic test of each joint can be carried out immediately after the insertion of one pipe into the other, allowing the 100% check of the joints, without the need to fill up the line

Backfilling requires the same care and the same materials used for ductile or steel pipes.

In any case skilled experts are clients disposal to supervise and assist during all the operation.

For the installation and adjusting of pipe system in the field the following joint methods are available:

* Double O-ring Bell and Spigot Joint

* Double O-ring Bell and Spigot with locking key joint

* Mechanical coupling

* Butt and strap joint

* Flanged Joint

 The procedures to assemble the various type of joint are described in Saudi pipe system technical Specifications.

When applying unrestrained joints or mechanical couplers, pipe lines must be anchored at each change of direction.  

Anyway the correct location of anchor points shall be settled after a detailed stress analysis.

For securing clamp it is suggested to apply a GRP lamination on each side of the clamp. If the movement of the pipe shall be restrained only in one direction, it is sufficient to apply just one overlay in the opposite position.

Sideways movement is to be prevented by clamping.

When installing Double O-Ring Lock Joint, these must be fully stretched in order to prevent movement of pipe sections and overloading at points of changes in direction such as bends and tees. It is preferable to apply mechanical stretch but stretching can also be done by pressurizing the main line (0.8 x Working Pressure).

The results can be observed by inspection of the position of the locking strip through the insert hole. Stretching should be applied before installing branch connections.

Should connections be necessary with machinery or bodies subject to vibrations, such as pumps or other equipment, it is a good engineering practice to avoid a direct link with such systems, because vibrations induce stresses on GRP pipe, which may prevail over the allowable value. A severe condition of vibration occurs when the generating frequency is equal or near the natural frequency of the pipeline. An usual method to avoid vibrations is to install a flexible joint between the source of vibration and the pipe.

SPS GRP pipe exposed to sunlight is not subject to resin degradation, due to ultraviolet radiation, because pipe contains, through the whole wall thickness, inhibitors, which prevent said degradation.

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 UNDERGROUND INSTALLATION

* SOIL - PIPE SYSTEM

The external loads (soil and traffic) above a GRP buried pipe cause a decrease in the vertical diameter and an increase in the horizontal diameter (deflection), that is indicative of strain (stress) levels in the pipe wall.

The horizontal movement develops a passive soil resistance that enhances pipe support. The amount of deflection depends on soil load, live load, native soil characteristics, pipe backfill material, trench width, launching and pipe stiffness.

Buried fiberglass pipes generally accommodate 4-5% long-term deformation without structural damage. Proper selection of pipe stiffness class and corresponding installation type helps to maintain pipe deflection within acceptable levels.

* CLASSIFICATION OF NATIVE SOILS 

The external loads (soil and traffic) above a GRP buried pipe cause a decrease in the vertical diameter and an increase in the horizontal diameter (deflection), that is indicative of strain (stress) levels in the pipe wall.

Native soils according to AWWA 950/95 are classified in 4 soil stiffness category. The soil groups depend both on soil types (classification) and soil density, which  

together determine 'the soil modulus. The symbols GW, GP, SW, SP, GM, GC, SM, SC, ML, CL etc.. are in accordance to ASTM - D2488.

Soil stiffness category 1 (SC1)

Crushed rock and gravel with <15% sand and 5% fines.

SCI materials provide maximum pipe support for a given density due to low contents of sand and fines. With minimum effort these material can be installed at relatively high soil stiffness over a wide range of moisture contents. In addition, the high permeability of SCI materials may aid in the control of water and are often desirable for embedment in rock cuts where water is frequently encountered. However, when groundwater flow is anticipated, consideration should be given to the potential for migration of fines from adjacent materials into open-graded SCI materials.

Soil stiffness category 2 (SC2)

Coarse grained soils with little or no fines (GW, GP, SW, SP) or any dual symbol soils or borderline soils beginning with one of these designations such as GW-GC ' containing 12% of fines or less.

SC2 materials, when compacted, provide a relatively high level of pipe support; however, open-graded groups may allow migration and the sizes should be checked for compatibility with adjacent material.

Soil stiffness category 3 (SC3)

Coarse grained soils with fines (GM, GC, SM, SC) or any dual symbol soils or borderline soils beginning with one of these designations with more than 12% finds; and ML, CL, or borderline soils beginning with one of these designations, such as ML/CL, with 30% or more coarse grained particles.

SC3 materials provide less support for a given density than SCI and SC2 materials. Higher levels of combative effort are required and moisture content must be controlled. These materials provide reasonable levels of pipe support once proper density is achieved.

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Soil stiffness category 4 (SC4)

Fine grained soils with medium to no plasticity (ML, CL) or borderline soil beginning with one of these designations, such as ML/MH with less than 30% coarse grained particles.

SC4 materials require a geotechnical evaluation prior to use. The moisture content must be near optimum to minimize comparative effort and achieve the required density. When properly placed and compacted, SC4 materials can provide reasonable levels of pipe support; however, high energy level vibratory compactors and tampers. do not use where water conditions in the trench prevent proper placement and compaction

* PIPE BURIAL

Excavating the trench

On most construction sites it will be desirable to keep excavation, pipe installation and backfilling close together to minimize logistics problems and to reduce supervision costs.

Trench construction will vary according to the types of soil encountered (stable or unstable). In any case the trench bottom shall be flat and continuous.

Stable trench walls or rock trench

Trench wall usually can be made vertical from the bed to the top of the pipe without the use of shoring or sheet piling.

Unstable trench walls and bottom

The trench will be excavated with vertical wall providing sheet shoring installation method 1 or with the natural slope of the soil, installation method 2. The foundation shown is required when the trench bottom is unstable, i.e. made up of soils whose displacement, due to variation in stress or moisture content, is very high.

 Installation method 2

Suggested value for the trench width are

as follows:

L= DN + 400 mm 

L= DN + 600 mm 

L= DN + 800 mm

The depth of the trench must be such as to have the bedding of the dimensions foreseen in the next paragraphs. If the soil is not able to give the vertical support requested by the project, the trench will be deepened of zoom or more, according to the prescriptions given by the designer, in order to obtain a more stabilized soil.

Moreover, should butt and strap joints be executed within the trench, it must be widened by 2 meters for a length of two meters in the joining area, in order to allow proper operations.

At the above locations the trench bottom shall be adequately lowered. These joint housings will be filled during backfilling.

Trench excavation below water table

Where an unstable soil condition is encountered which is caused by water table, the bottom of the trench must be stabilized before laying the pipes.

This can usually be accomplished by lowering the water table about 30 cm below grade pipe by means of pumps and stabilizing the bottom as already described.

To minimize the dewatering only enough trench should be opened to place one or two lengths of pipe and then backfill.

Bedding

The bedding shall be minimum 150 mm thick and shall provide the pipe with an uniform and continuous support over its entire length. 

The bedding surface shall be even and recesses shall be left corresponding to pipe joints. These receptacles shall be backfilled after pipe installation and joining.

We recommend the use of pea gravel, or crushed stone or sand as bedding material, with a fine content not exceeding 12%. With fines we mean materials passing through the ASTM 200 sieve. The maximum dimensions of the bed materials diameter should not be greater than 20mm.

The bed must be compacted until reaching 70% of its maximum density, before the pipe installation (90% Proctor standard).

Depending on the conditions of the unstable trench bottom, the installation contractor may require different types of foundations such as:

- Stabilization of the bottom material, by removing it for a minimum depth of 200 mm and replacing it with stabilized gravel or sand, into which the unstable soil will not penetrate (ground capacity from 0.7 to 0.9 kg/cm²);

- Concrete material with a minimum depth of 150 mm (ground capacity from 0.5 to 0.7 kg/cm²);  

- Piles capped by a concrete material (ground capacity from 0.5 to 0.7 kg/cm²). The above instruction must be as strictly followed as larger is the pipe diameter.

Granular soil trench

The trench walls shall be at the natural slope of the native granular material. Pipe shall be installed as shown in the figure relative to unstable trench, installation method 2.

Soft soil trench .

When the native is composed by highly plastic substances, very compressible, with a water content percentage on the dry soil weight exceeding 50%, as soft clays, very melted mud, etc., the granular soil used for the laying bed and the backfilling can be absorbed by the native soil.

In this case, it is suitable to cover the bed and the walls with a fabric non- fabric (geotextile), which has the function of separating the layers to prevent that the materials composing the bed and the backfilling from being mixed or buried.

Trench width

The trench width shall be such as to guarantee the minimum distance pipe/trench wall allowing backfilling compaction, according to the type of material used and the compacting method. Furthermore, in case of installation of soils not able to grant the side support requested by the project the trench will be widened, according to the designer's prescriptions, in order to stabilize the soil.

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backfill

Backfilling material will be the same as used for bedding (maximum lime content 10% and maximum particle size 18 mm).  

Backfilling is ideally divided in two areas : primary backfilling which vertically extends from the lower generatrix of the pipe as far as 70% of the diameter and secondary backfilling extending as far as 15 cm above the upper generatrix of the Pipe.

Backfilling shall be placed in singly compacted layers 200-250 mm high up to 70% of pipe diameter and 300 mm high up to the top.

Backfilling up to the ground level with native material has to be completed.

Compaction can be made by using an impulsive compactor or any other suitable equipment.

Please address the Technical Office for prescriptions relevant to the compaction ratio and the depth if the bed.

* PIPES INSTALLATION

To install the pipes, the following procedure can be used, in accordance with the type of joint and the pipe diameter:

a) For any type of joint and diameters: lay and align the pipe bars on the previously prepared bed, and perform junctions inside the trench.

b) For pipes which joints guarantee the axial continuity:

. Lay on the bed two or three bars, previously joined outside the trench, so as to reduce the number of junctions to be performed inside the trench.

. Align and join the pipe bars by the side of the trench or above it, using ties; let the already joined pipeline down the trench, using more hoisting equipment and taking care not to cause excessive deformations; this method can be used for small diameters only.

In case of bell/spigot or socket joints with O-ring, please verify that angles exceeding those allowed have not been given.

TYPICAL COMPACTION METHODS 

The following compacting suggestions will enable to achieve the maximum practical material density. Excessive compaction or compaction with inappropriate equipment can result in pipe deformation or pipe lifting off the bedding. Care must be used when compacting the pipe zone backfill with frequent checks of pipe shape.

Coarse grained soils (5% fines).

For coarse grained soils with less than 5% fines, the maximum density results from compacting saturation and vibration. Further to the use of internal vibrators, heights of successive Iifts of backfill must be limited to the penetrating depth of the vibrator. The backfill is placed in lifts of 0.15 to 0.3 m. Pipeline flotation has to be avoided when saturating the pipe zone backfill area. Water jetting will erode side support and few experts recommend it. Placing backfill over the pipe must be avoided, while the pipe zone material is saturated. That would load the pipe before the proper support can develop.

Coarse grained soils (5 = 12 % fines).

Compacting of coarse grained soils containing between 5 and 12% fines, is carried out such as by tamping or saturation and vibration. The method used should result in the maximum density of the backfill.

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Coarse grained soils ( > 12% fines). 

Coarse grained soils containing more than 12% fines, compact best by mechanical tamping in lifts of 0.1 to 0.15 m. In particular for fined grained soils, the soil modulus (passive soil resistance) is density sensitive and a greater compact effort will be required to obtain the necessary Proctor density dictated by design.

Compaction and installation. Quality Control

Deflection checks must be carried out when the first installed pipes are backfilled to grade. Further periodical checks must be done throughout the entire project Where practical, measurement has to be taken of the in- place density of the compacted primary pipe zone material to ensure compliance with the design assumptions.

Restrained joints, which withstand internal pressure and longitudinal forces

. Double O-Ring Bell and Spigot with locking key joint  

The joint is a double O-Ring Bell and Spigot type with a locking device that is inserted through a bell opening into a hoop groove. Both metallic and shear resistant plastic materials are used for this device.

This joint is a non-destructive, separable joining system, which accommodates longitudinal.

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The double O-ring bell and spigot joint allows for angular deflection. Table (1 .1) contains the maximum recommended values to be used for installation design according to BS 5480.

Application field

Diameters                                          Pressures

25 mm to 500 mm                            up to 30 bar

550 mm to 1200 mm                        up to 20 bar

1300 mm to 3000 mm                      up to 16 bar

* Higher pressure can be supplied on requests

The axial forces have to be sustained by external devices.

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Flanged joint

GRP flange are available to meet drilling according to ANSI, DIN, BS, UNI, etc. Flanges are of two type: Fixed Flange (F/F) and Stub end with steel Loose Flange (F/L).

Each type of flange is available with plain end, spigot end and bell end.

Sealing between flanges is accomplished with an elastomeric gasket. Standard gasket is a flat gasket. For severe application that can be identified by Saudi Pipe Systems Technical Department, and in any case for diameter >1200 mm and NP > 10 bar, it is suggested to use O-ring gasket that are accommodate in a groove realized on the

Application field

Diameters                                 Pressures

25 mm to 500 mm                    up to 30 bar

550 mm to 1200 mm                up to 16 bar

1300 mm to 3000 mm              up to 10 bar

The torque values depend on the pipe size, the nominal pressure and on the application. Assemble the joint and finger tighten all nuts. Make sure bolt threads are new and oiled so that proper torque results are attained. Use washers under both nuts and heads to protect back facing of flanges.

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Butt and Strap joint

This permanent joint consists of a hardening of impregnated glass, mats and tissues laminated according to specified width and thickness. The laminated joint provides continuity in both hoop and axial directions.

The application field of Butt & Strap joint is related to diameter and pressure classes of pipes and fittings to be joined.

The dimensions of butt and strap joint are calculated according to the following formulae:

t = P(ID+2tp)/(2sall-P)    L = P (ID+2tp)/(2 tall) 

Where;

  t = thickness of lamination, mm

P = design pressure, Mpa

ID = pipe internal diameter, mm

L = length of lamination, mm

tp = pipe thickness, mm

sall = allowable hoop stress, Mpa

tall = allowable shear stress, Mpa

Liner has the internal surface, namely the one in contact with the conveyed fluid, particularly smooth. This characteristic of smoothness reduces to minimum the fluid head losses and pumping heads and opposes to the growth of mineral deposits and algae. Liner is made of two monolithic sub layers: the inner one, in direct contact with the fluid, is reinforced with glass veil ''C'' 33 g/m 2 , with ratio resin content in a range of 80% - 90% by weight, the outer one is reinforced with plies of glass mat ''E'' of 375 g/m² , with a resin content in a range of 60% -70% by weight.

Mechanically resistant layer

Glass reinforced layers guarantee the mechanical resistance of the whole pipe against stresses due to internal and/or external pressure, external loads due to handling and installation, thermal loads. The layer is obtained by applying, on the previous partly cured liner, continuous rovings of glass wetted with resin, under controlled tensioning. This layer can contain aggregates (inert granular material such as silica sand) in order to increase the stiffness of the whole pipe. Thickness of mechanical resistant layer depends on the design conditions.

Top coat

Top coat or gel coat is the outer layer of the pipe which consists of pure resin added with UV protectors to protect the pipe from sun exposure.

In case of severe exposure conditions, i-e. aggressive soils or very corrosive environment, the gel-coat can be reinforced with a surfacing veil or added with fillers or pigments.

FITTINGS

Fabrication methods

Fittings are manufactured by the hand lay-up, contact molding and spray-up Process.

In hand lay-up and contact molding processes veil and alternate layers of mat and woven roving saturated with resin are applied on the mold. The operation is repeated until the required thickness is achieved.

In spray up process continuous strand roving is fed through a chopper gun, combined with catalyzed resin, and sprayed onto the mould surface. The operation is repeated to reach the required thickness.

Wall Structure

GRP fitting wall such as the pipe wall consists of three layers perfectly adherent one to the other in order to have a monolithic structure, each having different characteristics and properties in relation to their function. Liner and top coat are the same as the pipe. The difference consists in the mechanical resistant layer due to the type of reinforcement used.

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Be careful in handling pipe during transporting and storing do not damage it.

The ground surface for pipe storing should be level and even. The total height of the pipe packing unit should be less than 2m. The storing place should be located remote from the fire. The pipe should not be stored in an open air for long period of time.

The pipe and pipe fitting shall be packaged in accordance with the supplier's standard practice. The pipe package unit consists of several pipes laid out side with certain intervals, the height of the pipe package unit it less than 2m.

For transporting of pipes with different diameters, pipes may be packaged with an open ended tubular packing.

For further details on storing and transporting please consult our engineering department for technical manual and assistant.

* STORAGE, HANDLING 

Pipes and fittings should be kept on the cradles used for shipment. When this is not practical, pipes can be stored on sand ground and or on wood joists.

Pipes and fittings must be stored away from possible sources of flames, such as flammable liquids.

Glass materials do not require particular storage conditions and do not present particular stability problems. Nevertheless it is advisable a storage room having a temperature not higher than 40^o C and a humidity not higher than 75%.

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LABORATORY

SPS has made the effort to have state of the art laboratory and testing department this department supervise and issue certificate on all test perform or according to project consulting required.

TESTING

              SPS -GRP PIPES undergo a series of tests to assure quality standards, these tests are performed on each pipe / batch.

- Testing starts with raw materials. By making sure of choosing the highest quality raw material we can assure. Top quality final product.

- By inspecting dimensions and visual / weight through out production line

  .Step by step: follow-up and checking of material as they advance through out the production line. All the way to finished product.

All raw materials undergo extensive testing to assure and confirm that it meets technical specifications and standard of products.

a) RESINS

b)GLASS

TEST FOR THE APPROVAL OF RAW MATERIALS

Besides test based on workability and test based on verification of the chemicals inertness for resins, for the approval of new raw materials the tests listed in the former paragraph shall be completed with the following tests.

a) RESINS

  b) GLASS

QUALITY CONTROL ON PRODUCTS 

The test, which the products undergo during the manufacturing stages and before dispatching ensures that they fully comply with the international specifications and that they are suitable for the usage which they have been made for.  

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specific gravity of GRP is related to thickness ratio between the liner and wall. The data herein are for pipes 700mm in diameter only.

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Note:

  1- Liner thickness for pipes shall be 1.5-6 mm. Liner strength will not be taken into consideration when calculating structure.

  2- The above data is measured value of certain specimen made of polyester resin, the test specimen conditioned at ambient temperature.

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Corrosion Resistance

SPS pipes are resistant to corrosion both in and out, in a wide range of fluid handling applications. Other lining and exterior coating are therefore not required.

Strength to weight

SPS piping systems have excellent strength to weight properties. These pipes strength per unit of weight surpasses Iron, carbon, and stainless steels.

  Light weight

SPS composites are lightweight. Piping is only one-sixth the weight of other steel products with similar properties and 10% of the weight of similar concrete products.

  Electrical properties

SPS pipes are nonconductive. It is not necessary to dissipate static electricity build up when transporting certain fluids such as jet fuel.

  Dimensional Stability

SPS composites are of materials that meet the most stringent material stiffness, dimensional tolerance, weight, cost criteria.

  Low-Maintenance 

composites are resistant to rust so they are easily clean and require minimal protection from the environment.

Coupling and Expansion Joint Dimension

Dimensions of ND higher than 900 mm available on request

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 (*) Available upon request

 Note:

P.E. =  Plain ends

B.B. = Bell/Bell

B.S.= Bell/Spigot

Dimensions of ND higher than 900 mm are available on request

 3- Flange Dimensions:

P.E.= Stub-end with loose flange welding neck flange (Plain ends)

B.E./S.B.= Loose flange with Bell end or Spigot end

                  Fixed flange with Bell end or Spigot end

(*)=  Bell/Bell or Bell/Spigot

Dimensions of ND higher than 900 mm are available on request

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