IFGS specifies, sources and quality-checks GRE / FRP / RTP systems for onshore oil and gas: gathering and transfer lines, produced-water and injection duties, well tubulars, and spoolable high-pressure composite where the project accepts API Spec 15S–class pipe. We compete on application fit and RFQ clarity — not on claiming a global multi-factory footprint.

Where composites beat carbon steel on O&G surface lines
- Corrosion — produced water, H2S/CO2-bearing streams, and saline injection often punish bare steel; glass-reinforced epoxy and thermoplastic composites are selected when fluid data supports them.
- Weight & install — lighter than steel for the same hydraulic duty; fewer heavy lifts on remote ROWs.
- Hydraulic efficiency — smooth bore can cut pumping energy vs corroded steel (project-specific).
- Life-cycle — fewer replacements when the duty matches the resin/fiber system — always verify against your fluid and temperature envelope.
Application map (choose a product family)
- Surface line pipe & joints — low-pressure GRP line pipe, joints (adhesive bonded, bell & spigot, lamination, flanges).
- Well tubulars — GRE casing, GRE screen tubing, high-pressure fiberglass tube, stratified water-injection tubing.
- Spoolable RTP — onshore API 15S RTP, flexible composite for high-pressure transmission.
- Field case — Iraq south 6″ / 1500 psi / 85°C / 10 km (2025).
Define the duty before you buy “fiberglass”
- Fluid composition (oil/gas/water/multiphase), H2S, CO2, solids, chemicals.
- Operating and design pressure, surge, temperature range and cycling.
- Surface vs downhole, burial, supports, traffic/external loads.
- Connection type, inspection documents, and the standard edition named in the PO (API 15HR / 15LR / 15S, project specs — not marketing labels).
Application scope
IFGS is a Dongying GRE/FRP/RTP manufacturer. We do not market ourselves as a drop-in for every large-diameter municipal GRP network or deepwater API 17J unbonded flexible OEM. Engineering review first; then price.
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