Eissa Fiber Glass LLC provides reliable GRP, FRP and GRE solutions for construction, infrastructure, industrial, marine, power and water-treatment applications across the UAE.
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Eissa Fiber Glass LLC provides reliable GRP, FRP and GRE solutions for construction, infrastructure, industrial, marine, power and water-treatment applications across the UAE.
Get a Quote
GRP (Glass Reinforced Plastic) flanges and fittings are durable, corrosion-resistant components designed for high-integrity piping systems to connect, control, and direct fluid flow. Flanges join composite pipes, valves, pumps, and equipment securely, while fittings such as elbows, tees, reducers, and couplings modify flow direction and system geometry.
Engineered with premium thermosetting resins and multi-axial fiberglass reinforcements, our fittings deliver total immunity to corrosive chemicals, high structural stiffness, and excellent hydraulic efficiency, outperforming metallic fittings in abrasive, saline, and aggressive chemical environments.
We manufacture both standard compression-molded and custom contact-molded components according to ANSI B16.5, DIN, and BS 4504 pressure bolt circles:
Precision-drilled flanged connections providing robust, leak-free mechanical joins to metal equipment and valves.
Seamless flow redirection, division, and dimension reduction designed to match pipeline structural ratings.
All fittings are manufactured from parent-resin matrices (Isophthalic Polyester, Vinyl Ester, or Epoxy) engineered to match or exceed the nominal pressure ratings of connected lines:
| Parameter | Design Range & Standards |
|---|---|
| Diameter Range (DN) | DN 25 mm (1") up to DN 2,600 mm (104") (Custom large diameters on request). |
| Nominal Pressure Ratings | Gravity / Low Pressure (PN 1 to PN 3) up to high pressure classes: PN 6, PN 10, PN 16, PN 25, and PN 32 bar. |
| Drilling Patterns | ASME/ANSI B16.5 Class 150 / 300, EN 1092-1 (DIN) PN 10 / PN 16, BS 4504, and AWWA C207. |
| Gasket Face Styles | Flat Face (FF) with full-face elastomer gaskets; Raised Face (RF) with inner chemical seals; O-Ring grooved faces. |
| Resin Formulations | Isophthalic Polyester (Water/Sewage), Vinyl Ester (Acids/Bleach/Chlorine), and Novolac / Epoxy (High-Temp Hydrocarbons). |
Yes. Our GRP flanges are machined with standard bolt circles (such as ANSI Class 150 or DIN PN 10/16) to mate seamlessly with cast iron, ductile iron, and stainless steel flanged valves. We recommend full-face elastomeric gaskets (such as EPDM or Neoprene with 60–70 Shore A hardness) and calibrated torque-limiting tightening sequences to prevent flange hub over-stressing.
Concentric reducers change diameter along a shared central centerline and are typically used in vertical flow piping. Eccentric reducers have one flat edge and are used in horizontal runs—particularly on pump suction lines to avoid vapor cavitation, and in drainage lines to promote complete gravity fluid draining.
Fittings are typically attached by butt-and-strap composite lamination, where pre-beveled pipe ends are wrapped with alternating layers of chopped strand mat and woven roving impregnated with matching resin. Alternatively, fittings can be factory-supplied with flanged ends or bell couplers for mechanical gasketed joining.
Yes. We supply heavy-duty GRP blind flanges reinforced to withstand hydrotest pressures up to 1.5 times the nominal working pressure, equipped with optional central threaded tapping points for test gauges and air bleed valves.