Yingnai FRP End Cap is designed for secure termination of FRP pipelines, branch connections and equipment nozzles exposed to corrosive fluids. Its reinforced composite construction provides chemical resistance and structural reliability while maintaining a smooth internal surface. Diameter, cap profile, laminate thickness, connection method and resin system can be customized for specific piping conditions.
| Item | Typical Technical Specification |
| Product Name | FRP End Cap |
| Primary Function | Permanent termination of an FRP pipeline, vessel branch or unused nozzle |
| Typical Manufacturing Range | DN25–DN4000 |
| Cap Profile | Dished, domed, hemispherical, elliptical or flat reinforced cap |
| Preferred Pressure Form | Dished or domed profile for pressure service; flat reinforced form for low-pressure or nonpressure service |
| End Connection | Butt-and-wrap laminated joint, bonded socket, bonded spigot or flanged removable assembly |
| Typical Pressure Classes | PN6, PN10 and PN16 when designed as part of a qualified pressure piping system |
| Dimension Symbols | DN, cap depth H, end outside diameter OD, laminate thickness t and connection length L |
| Resin Options | Isophthalic polyester, vinyl ester, novolac vinyl ester or process-qualified resin |
| Corrosion Barrier | Continuous resin-rich inner barrier extending through the cap and connection area |
| Structural Reinforcement | Multi-directional glass reinforcement with additional layers at the knuckle and pipe connection |
| Manufacturing Method | Contact molding, compression molding, filament-wound dome fabrication or combined fabrication |
| Drain / Vent Option | Optional threaded, flanged or laminated drain/vent connection |
| Operating Temperature | Selected according to the resin and chemical environment; high-temperature service requires dedicated material verification |
| Inspection | Profile, cap depth, wall thickness, connection diameter, laminate continuity, visual quality, cure and leak/pressure test where specified |
| Applicable Standards | ASTM D5685, ASTM D6041, ASTM D3840, ASTM C582 and ASME NM.2 |
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