Which parameters are tested on FRP pressure pipe?

Full parameters: appearance, inner diameter/wall/length, long- and short-term hydrostatic, resin content, insoluble resin, Barcol hardness, axial tensile, leakage and short-term failure hoop stress.

How is long-term hydrostatic performance evaluated?

By ASTM D2992 long-term hydrostatic regression to derive the hydrostatic design basis (HDB), with reference to GB/T 18369.

Which international standard is the benchmark?

The ISO 14692 framework, combined with GB/T and ASTM, covering the full life cycle of GRP/GRE pressure pipe.

Filament-Wound FRP Pressure Pipe Testing Services

Service Content

Filament-wound reinforced thermosetting resin pressure pipe (GRP/GRE/FRP pressure pipe), with glass fibre as reinforcement and epoxy or unsaturated polyester resin as matrix, offers corrosion resistance, a high strength-to-weight ratio and a smooth bore, and is widely used in oil and gas gathering, desalination, fire-fighting and industrial circulating-water systems. Following the ISO 14692 framework together with GB/T and ASTM standards, the LEISA Technology laboratory provides "full-parameter" third-party testing of pressure pipe, covering appearance, geometry, long-term and short-term hydrostatic performance, resin content, Barcol hardness, axial tensile strength and hydrostatic leakage, delivering a complete data chain for type testing, factory inspection, project acceptance and quality arbitration.

Test Items

Appearance quality: inner/outer wall defects, delamination, voids and exposed fibres, per the product standard.
Inner diameter: nominal inner diameter and tolerance, per GB/T 8806.
Liner thickness: resin-rich liner thickness as a corrosion barrier, per the product standard.
Length: effective pipe length, per GB/T 8806.
Thickness: structural wall thickness distribution, per GB/T 8806.
Long-term hydrostatic performance: hydrostatic design basis (HDB), per ASTM D2992, GB/T 18369.
Resin content: by loss on ignition, per GB/T 2577, ASTM D2584.
Insoluble resin content: degree of cure/cross-linking, per GB/T 2576.
Barcol hardness: field/laboratory cure assessment, per GB/T 3854, ASTM D2583.
Hydrostatic leakage: sealing and leak check at specified pressure, per GB/T 15560.
Short-term hydrostatic failure hoop stress: short-term burst hoop stress, per ASTM D1599, ASTM D2290.
Axial tensile strength: axial tensile strength and modulus, per GB/T 1447, ASTM D2105.

Service Process

Sample receipt and registration: record diameter, pressure class, resin system and batch.
Plan confirmation: define a full-parameter plan per ISO 14692 and product standard.
Specimen preparation: prepare hoop, axial and compositional specimens and condition them.
Testing: complete dimensional, hydrostatic, mechanical and compositional tests.
Data processing and review: regress HDB, judge conformity and review.
Report delivery: issue an ISO 14692-aligned report with technical support.

Advantages

Aligned to ISO 14692: covers GRP pipe testing across the life cycle.
Long-term assessment: D2992 long-term hydrostatic regression capability.
One-stop full parameters: geometry, mechanics and composition in one report.

Centred on ISO 14692, the LEISA Technology laboratory performs full-parameter testing of filament-wound FRP pressure pipe, giving manufacturers and owners authoritative, traceable quality evidence for type certification, factory inspection and project acceptance, and safeguarding the long-term safety of high-pressure conveyance systems.

Applicable standards: ISO 14692-2, GB/T 1447, GB/T 2577, GB/T 2576, GB/T 3854, ASTM D1599, ASTM D2992, ASTM D2105, ASTM D2290.