Salient Features of Extra Co. Glass Reinforced Pipes
Glass Reinforced Plastics “GRP” or Reinforced Thermosetting Resin ‘RTR’ pipes exhibit excellent adhesion, fatigue-resistance, impact strength, chemical-resistance and low shrinkage, leading to lesser stresses in the finished pipe, superior mechanical and chemical properties, long-term performance and excellent fatigue-resistance under cyclic loading.
Different types of resins are used, leading to the following caterogies:
- GRP Using Isophtalic Resin is structural wall and Isophtalic in liner (where applicable). For both underground and aboveground applications, restrained and non-restrained systems, in media temperature upto 600C.
- GRV Using Vinylester Resin throughout. For Industrial application where specific chemical resistance is required. Used mainly in aboveground applications in media temperature upto 850C.
- GRE Using Epoxy Resin throughout. For industrial application in media temperature upto 120 C. Additional external protection can be applied to allow for additional fire-retardance.
Applications
- Water Transmission
- Sanitary Sewers
- Storm Water Systems
- Sewer Force Mains
- Effluent Water
- Manhole Liners
- Structural Manholes
- Pumping Stations
|
- NDM
- Thrust Boring
- Valve Chambers
- Fire Mains
- Water Desalination Plants
- Power plants
- Chemical and Petrochemical Industry
- Food Industries (Refineries and Breweries)
|
Applicable StandardsApplicable Standards
|
ASTM D 3517
ASTM D 3754
ASTM D 3262
AWWA C-950
|
BS 5480
IS 14402 : 1996
IS 12709 : 1994 |
Manufacturing
EXTRALITE GRP/GRV/GRE pipes are manufactured on CNC filament winding machine monitored by a fully computerized system. The inner liner thickness of pipes is 1mm, reinforced with ‘C’ glass veil and cab be of higher thickness as required. The structural wall consists of glass rovings impregnated with Resin wound at precisely set helical winding patterns under uniform tension for the various designs. The outer finish consists of Resin topcoat.
GRP/GRV/GRE fittings required for various applications are provided by Extra Co. Using same material as pipe, formed to suit pipe size and end design, in required elbows, tees, unequal tees, concentric and eccentric reducers, flanges, blanks flanges, puddle flanges, couplings, saddles, wyes, crossed, end caps, etc. Special fittings can be made available upon request.
Product Information
- Application
- Stiffness Class
- Standard Length
- Pressure Class
- Range of pipes size and application Series
- Type of joints
- Mechanical and Physical Properties
- Spools
- Inhouse Testing facilities
- Installation
- Design & Engineering
- Storage and Handling
Glass Reinforced Plastics "GRP" or Reinforced Thermosetting Resin "RTR" pipes exhibit,
- Excellent adhesion
- Fatigue-resistance
- Impact strength
- Chemical-resistance
- Low shrinkage with lesser stress in finished product
- Superior mechanical and chemical properties
- Long-term performance, and
- Excellent fatigue-resistance under cyclic loading
Different types of resins are used, for different type of products:
- GRP Using Isophtalic Resin in structural wall and Vinylester Resin in liner (where applicable). For both underground and aboveground applications, restrained and non-restrained systems, in media temperature upto 60°C.
- GRV Using Vinylester Resin throughout. For industrial applications where specific chemical resistance is required. Used mainly in aboveground applications in media temperature upto 85°C.
- GRE Using Epoxy Resin throughout. For industrial applications in media temperature upto 120°C. Additional external protection can be applied to allow for additional fire-retardance. The inner liner thickness of pipes is approximately 0.5 / 4mm, reinforced with 'C' glass veil and available with higher thickness, if required. The structural wall consists of glass rovings impregnated with resin wound at precisely set helical winding patterns under uniform tension for various designs. The outer finish consists of resin topcoat
GRP/GRV/GRE Fittings
GRP/GRV/GRE Fittings required for various applications are provided by Extra Co using same material as pipe, formed to suit pipe size and end design, in required elbows, tees, unequal tees, concentric reducers, flanges, blind flanges, puddle flanges, couplings, saddles, wyes, crosses, end caps, etc., Special fittings can be made available upon request.
Applications
- Sanitary sewers
- Storm Water systems
- Sewer force Mains
- Effluent water
- Manhole liners
- Structural Manholes
- Water transmission
- Pumping Stations
- NDM
- Thrust boring
- Valve chambers
- Fire Mains
- Water Desalination Plants
- Power Plants
- Chemical & petrochemical Industry
- Food industries (refineries & breweries)
Stiffness Class
- 1500 N/m2
- 2500 N/m2
- 5000 N/m2
- 10000 N/m2
Standard Lengths of our Pipes
- 3000mm for pipes dia < 80mm
- 6000mm for pipes dia = 80mm
- 9000mm for pipes dia > 100mm
Pressure Class
Range of pipes sizes and applications Series
- EX 100: Oil field industry
- Pressure upto 32 bars
- Diameter 50-300mm
- Aboveground & underground application
- GRE pipes
- EX 200: Chemical & Petro-chemical industry
- Pressure upto 16 bars
- Diameter 50-1200mm
- Aboveground application
- GRV/GRE pipes
- EX 300: Water supply
- Pressure upto 16 bars
- Diameter 50-2000mm
- Mainly underground application
- GRP pipes
- EX 400: Fire protection system
- Pressure upto 32 bars
- Diameter 50-300mm upto 32 bars
- Diameter 400-600mm upto 25 bars
- GRP pipes
- EX 500: Sewerage / Drainage
- Gravity & Pressure upto 12 bars
- Diameter 50-2000mm
- 1.0 - 2.0mm thick liner: Vinylester resin
- Structural wall: Isophatalic resin
- GRP pipes
- EX 600: Power stations and desalination plants
- Pressure upto 16 bars
- Diameter 50-1200mm
- Special design for full vacuum & rigid coupling
- GRV pipes / GRP pipes
Types of Joints
Flanged Joint
To enable connections with steel and to allow for easy assembling and disassembling of process lines, Extra Co pipes and fittings can be supplied with flanges, drilled in accordance with ANSI, BS, DIN or other specifications. Also, special requirements can be met upon request
Butt & Wrap Joint
In general these joints will only be used for diameter over 300mm. The preparation of this rigid joint requires good craftsmanship.
Rubber Seal Locked Joint
This type of joint consists of an integral filament wound socket end and a machined spigot end. The O-ring seal is positioned on the spigot end. The locking device is inserted through an opening in the socket end. It fits in a circumferential groove on the inner side of the spigot end and rests against a shoulder on the socket end. The rubber seal lock joint allows for some axial movement as well as a certain angular deflection
Adhesive Joint
Pipes are produced with integral socket and spigot ends. Ends are slightly tapered. The inside of the socket matches with the outside of the machined spigot. The two components of adhesives, namely epoxy resin and hardener are supplied in appropriately sized cans in correct mixing ratio.
Non-restrained joints
Bell and Spigot Joint
The socket end of this joint is an integral filament wound part of the pipe with reka ring sitting in a groove built The Spigot end is a machined part on which O-ring seal is positioned. The flexible joint allows for axial movement of the spigot in the socket
Double Bell Coupling Joint
Short pipes are joined using double bell coupling. The sealing of the joint is achieved by the compression of two electrometric rubber gaskets when the joint is assembled.
Mechanical and Physical Properties
| PROPERTIES |
VALUE |
| Specific gravity |
1580 - 1800 kg/m3 |
| Hoop tensile strength |
220 - 490 N/mm2 |
| Axial tensile strength |
40 - 50 N/mm2 |
| Coefficient of thermal expansion |
18 to 30 x 10-6 (mm/mm/deg C) |
| Flexural modulus |
13800 - 20000 N/mm2 |
| Compressive strength |
208 - 364 N/mm2 |
| Stiffness |
1500 - 15000 N/m2 |
| Barcol hardness |
40 - 50 |
| Hoop modulus of elasticity |
20 - 30 kN/mm2 |
| Axial modulus of elasticity |
06 - 10 kN/mm2 |
| Thermal conductivity |
0.2 - 0.35 W/mº C |
| Specific heat |
921 J/KgºK |
Spools
Extra Co manufactures and supplies GRP pipes & fittings in the form of spools for easy installation at site, as per site requirement. It reduces labour costs and fabrication time at sites.
In-House Testing Facility
| S.No |
Test Description |
Reference Standard |
| 1. |
Tensile Strength / Modulus |
BS 5480 / BS 2782 / ASTM D638 |
| 2. |
Flexural Strength / Modulus |
BS 2782 / ASTM D790 |
| 3. |
Shear Strength |
BS 2782 / ASTM D2344 |
| 4. |
Hoop Tensile for pipe |
BS 5480 / ASTM D2290 |
| 5. |
Pipe stiffness test for pipes |
BS 5480 / ASTM D2412 |
| 6. |
Compression strength test |
BS 2782 / ASTM D695 |
| 7. |
General Load and Deflection Test |
BS 4592 |
| 8. |
Shear Pullout test for ladder |
Extraco's internal standard |
| 9. |
Loss of Ignition |
BS 2782 / ASTM D2584 |
| 10. |
Barcol hardness |
BS 2782 / ASTM D2583 |
| 11. |
Acetone sensitivity test |
BS 4994 |
| 12. |
Gel time + peak temperature for resin |
Extraco's internal standard as per BS 4549 |
| 13. |
Density of glass |
Extraco's internal standard as per BS 4549 |
| 14. |
Water Absorption test |
BS 7491 / ASTM D570 |
| 15. |
Viscosity test for resin / SMC paste |
ASTM D 2196 |
| 16. |
Hydrostatic Pressure test |
BS 5480 / ASTM 3517 / AWWA |
| 17. |
Air Pressure Test |
BS 4994 / ASTM D4021 / UL 1316 |
| 18. |
Vacuum test |
BS 4994 / ASTM D4021 / UL 1316 |
Storage and Handling
Delivery, storage and handling should be in accordance with Extra Co recommendations.
Installation
Underground installation: The customer shall ensure that buried pipes are installed in accordance to Extra Co underground installation instructions.
Aboveground installation: The customer shall ensure that pipes are installed in accordance to Extra Co aboveground installation instructions.
Design & Engineering
Extra Co has the capability to perform the pipe system design & Engineering through the extensive engineering program covering the following:
Design calculation for pipes & fittings in accordance with international standards like BS/ASTM/AWWA standards.
- Isometric & Detailed Drawings for supports in the piping system & trenches
- Stress & Flexibility analysis
Software Available
- AutoCAD 2006
- CAESAR II, Version - 4.50
- CADWORX 2006
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