Standards developed internationally apply to glass reinforced polyester (GRP) pipes, sometimes referred to as fibreglass or fibre reinforced polyester (FRP), when used for infrastructure, including the conveyance of potable water, irrigation water, sewage and industrial waste. Common to all modern pipe product standards is the fact that they are performance-based documents. That is, the required performance and testing of the pipe is specified rather than prescriptive requirements on the manufacturing process.
FLOWTITE™ pipes have been appraised by the Water Services Association of Australia (WSAA). Refer to Product Appraisal 04/06 “FLOWTITE™ GRP Pipe Systems for Fibrelogic Pipe Systems Pty.Ltd”
The following list includes standards commonly used for the manufacture and testing of GRP pipes and fittings.
- Australian Standard AS 3571.1 “Plastic piping systems – Glass reinforced thermo setting plastics (GRP) systems based on unsaturated polyester (UP) resin – Pressure and non pressure drainage and sewerage” (ISO 10467:2004 Mod)
- Australian Standard AS 3571.2 “Plastic piping systems – Glass reinforced thermo setting plastics (GRP) systems based on unsaturated polyester (UP) resin – Pressure and non pressure water supply” (ISO 10639:2004 Mod)
- Australian Standard AS 3572 “Plastics – Glass Filament Reinforced Plastics (GRP) – Methods of Test”.
ISO 10639 “Plastics piping systems for pressure and nonpressure water supply – Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin”
ISO 10467 “Plastics piping systems for pressure and nonpressure drainage and sewerage – Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin”
- ASTM D3262 “Standard Specification for “Fibre glass” (GlassFibre-Reinforced Thermosetting - Resin) Sewer Pipe”
- ASTM D3517 “Standard Specification for “Fibre glass” (GlassFibre-Reinforced Thermosetting - Resin) Pressure Pipe"
- ASTM D3754 “Standard Specification for “Fibre glass” (GlassFibre-Reinforced Thermosetting - Resin) Sewer and Industrial Pressure Pipe”
- AS 3571.1 2009: “Plastics piping systems - Glass-reinforced thermoplastics (GRP) systems based on unsaturated polyester (UP) resin - Pressure and non-pressure drainage and sewerage” (ISO 10467:2004, MOD)
- AS 3571.2 2009: “Plastics piping systems - Glass-reinforced thermoplastics (GRP) systems based on unsaturated polyester (UP) resin - Pressure and non-pressure water supply” (ISO 10639:2004, MOD)
- ISO 10467 “Plastics piping systems for pressure and nonpressure drainage and sewerage – Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin”
- AS 1281 “The Cement Mortar Lining of Steel Pipes and Fittings”
- AS 1579 “Arc-welded steel pipes and fittings for water and wastewater”
- AS 2129 – “Flanges for pipes, valves and fittings”
- AS/NZS 2280 “Ductile iron pressure pipes and fittings”
- AS/NZS 4087 “Metallic flanges for waterworks purposes”
- AS/NZS 4331.1 (ISO 7005) “Metallic flanges - Steel flanges”
The elastomeric sealing rings comply with the requirements of EN 681-1: 1996 Type WA and WC and AS 1646. Unless otherwise requested EPDM rings will be supplied. However in special circumstances other polymer rings may be supplied.
Elastomers for FLOWTITE ®
The standard polymer supplied. Other types are rarely needed and can only be obtained as a special order
All FLOWTITE® pressure pipes are branded to indicate the nominal diameter, pressure class and stiffness.
Couplings for non-pressure pipes are branded to indicate the nominal diameter. Because couplings are common in the non pressure and pressure range up to Class 6 they will generally be branded Class 6, for example “DN900 PN6”.
With the same focus as Iplex on reducing the environmental footprint of its pipe FLOWTITE ® Technology, AMIANTIT have produced an Environmental Product Declaration. The document summaries FLOWTITE’s extensive life cycle assessment study. The study was conducted according to international standards ISO 14040/ISO 14044 and reviewed by Thinkstep. View FLOWTITE ® EPD
FLOWTITE® pipes are currently manufactured in Australia in the nominal size range DN300 to DN3000.
FLOWTITE® pipes in sizes DN300 to DN750 are manufactured with the same outside diameters as ductile iron pipe for the same nominal diameter. As a result the internal diameters are approximately 10% larger than the same comparable nominal size. Additional Australian FLOWTITE™ sizes not found in the ductile iron range DN100 to DN750 are DN525 and DN675.
Pressure pipes are classified according to nominal pressure (PN) and nominal stiffness; no pressure pipes by nominal stiffness (SN) only.
The standard nominal stiffness (SN) classes available are DN5000 and SN10000. Other pipe pressure of stiffness classes apart from those listed may be manufactured upon request (i.e. SN20000).
FLOWTITE® GRP pressure fittings are manufactured in Classes PN6, PN10, PN16, PN20, PN25 and PN32 for use with FLOWTITE® pipes of the corresponding class. These fittings are fabricated from FLOWTITE® pipes using wrapped GRP laminate. FLOWTITE® GRP fittings are normally supplied with spigot ends suitable for use with FLOWTITE® couplings. Flanged fittings are also available and are generally fabricated with either a GRP full-faced or stub flange and metal backing ring depending on the design. For higher operating pressures stub flanges with steel backing plates may be the preferred option.
“Non-pressure” (i.e. PN1) GRP fittings are also fabricated from FLOWTITE® pipes and are normally supplied with spigot ends suitable for use with FLOWTITE® couplings. Sewer branch connections can be made by using specially fabricated GRP saddle fittings with branch off takes. The saddles are attached to the side of the pipe with an epoxy adhesive applied in-situ. Branch off takes include an adaptor coupling with a rubber ring or solvent weld socket for joining to PVC DWV pipe.
FLOWTITE® fitting are normally supplied with spigots machined to suit FLOWTITE® couplings.
Iplex Crevet® Ductile Iron fittings with socket joints can be used on FLOWTITE ® pipes of the same nominal size (DN300 to DN750) conforming with AS/NZS 2280 – “Ductile Iron Pressure Pipes and Fittings”.
A complete range of bends, tees, reducers and flange-spigots are available. These fittings may be protected from corrosion using various alternatives:
- Polymeric coated
- Cement lining and polyethylene wrap
Steel (and stainless steel) fittings fabricated from steel plate can be used with FLOWTITE® pressure pipes. Normally, steel fittings are protected from corrosion externally by ultra high build epoxy and internally by cement lining. Fittings must be manufactured with specially sized spigots to match FLOWTITE® pipe outside diameters, including tolerances so that the joint can be made with standard FLOWTITE® GRP couplings