Yingnai frp chemical resistant pipe is designed for acids, alkalis, salts and other aggressive process fluids where conventional metallic piping may suffer rapid corrosion. Chemical-resistant resin systems and engineered fiberglass reinforcement provide dependable containment and structural performance. Pipe diameter, pressure rating, corrosion barrier, fittings and joint configuration can be selected according to fluid composition, concentration and temperature.
| Item | Reference Specification |
| Product Name | FRP Process Piping / Glass-Fiber-Reinforced Thermosetting-Resin Piping |
| Nominal Diameter Range | DN10-DN4000 |
| Pressure Classes | PN 0.6, PN 1.0 and PN 1.6 MPa; availability varies by diameter |
| Standard Pipe Length | 1.8 m for selected small bore sizes, 6 m for selected medium sizes and 12 m for larger sizes |
| Dimension A | engineering definition to be confirmed against the product drawing |
| Resin Options | Isophthalic polyester, bisphenol-A vinyl ester, novolac vinyl ester, epoxy or project-specified thermoset resin |
| Laminate Construction | Resin-rich corrosion barrier, structural glass-reinforced laminate and external protective layer |
| Manufacturing Method | Filament winding for straight pipe; contact molding, filament winding or molding for fittings and custom components |
| Joint Options | Butt-and-wrap laminated joint, adhesive-bonded socket/spigot joint, flanged joint or elastomeric-sealed joint where designed |
| Design Pressure | Project-specific; pressure rating shall be qualified for the selected materials, dimensions, temperature, manufacturing process and joint system |
| Design Temperature | Project-specific and resin-dependent; state normal, maximum and upset temperatures |
| Operating Medium | Acids, alkalis, salts, wastewater, process water and other compatible corrosive fluids |
| Chemical Compatibility | Confirm resin, corrosion barrier and reinforcement using actual chemical composition, concentration, temperature and impurities |
| External Loads | Pipe weight, fluid weight, insulation, support reactions, wind, seismic, thermal expansion, occasional loads and vacuum where applicable |
| Support Design | Support spacing, saddle width, guides and anchors shall be calculated for the installed system rather than selected from diameter alone |
| Fittings | Elbows, tees, reducers, flanges, branch fittings, blind flanges, expansion components and custom spool pieces |
| Inspection and Testing | Material verification, visual inspection, dimensional inspection, laminate thickness, Barcol hardness, cure verification and hydrostatic/pressure testing as specified |
| Applicable References | ASME NM.2-2022; ASTM D2996-23; ASTM D2992-24; ASTM D5685-25; ASTM C581 where applicable |
| Required Inquiry Data | Medium, concentration, impurities, normal/maximum temperature, design/operating pressure, vacuum, flow rate, DN, joint type, installation layout, support conditions and applicable standard |
| Disclaimer | Final wall thickness and pressure rating shall be based on qualified product data and approved engineering calculations, not on this typical table alone |
| FRP Process Pipe Wall Thickness Matrix | |||||
| Nominal Diameter DN (mm) | Standard Length L (mm) | Dimension A (mm) | Wall Thickness at PN 0.6 MPa (mm) | Wall Thickness at PN 1.0 MPa (mm) | Wall Thickness at PN 1.6 MPa (mm) |
| 10 | 1800 | 1500 | 4.6 | 4.6 | 4.6 |
| 15 | 1800 | 1500 | 4.6 | 4.6 | 4.6 |
| 20 | 1800 | 1500 | 4.6 | 4.6 | 4.6 |
| 25 | 1800 | 1500 | 4.6 | 4.6 | 4.6 |
| 32 | 1800 | 1500 | 4.6 | 4.6 | 4.6 |
| 40 | 1800 | 1500 | 4.6 | 4.6 | 4.6 |
| 50 | 6000 | 2000 | 4.6 | 4.6 | 4.6 |
| 65 | 6000 | 2000 | 4.6 | 4.6 | 4.6 |
| 80 | 6000 | 2000 | 4.6 | 4.6 | 4.6 |
| 100 | 6000 | 2000 | 4.6 | 4.6 | 4.6 |
| 125 | 6000 | 3000 | 4.6 | 4.6 | 5.9 |
| 150 | 6000 | 3000 | 4.6 | 4.6 | 5.9 |
| 200 | 6000 | 3000 | 4.6 | 5.9 | 7.2 |
| 250 | 12000 | 4000 | 4.6 | 5.9 | 8.5 |
| 300 | 12000 | 4000 | 5.9 | 7.2 | 9.8 |
| 350 | 12000 | 4000 | 5.9 | 8.5 | 11.1 |
| 400 | 12000 | 4000 | 5.9 | 8.5 | 12.4 |
| 450 | 12000 | 4000 | 7.2 | 9.8 | 13.7 |
| 500 | 12000 | 4000 | 7.2 | 9.8 | 15 |
| 600 | 12000 | 6000 | 8.5 | 12.4 | 17.6 |
| 700 | 12000 | 6000 | 9.8 | 13.7 | 20.2 |
| 800 | 12000 | 6000 | 9.8 | 15 | 22.8 |
| 900 | 12000 | 6000 | 11.1 | 16.3 | 25.4 |
| 1000 | 12000 | 6000 | 12.4 | 17.3 | 28 |
| 1200 | 12000 | 6000 | 13.7 | ||
| 1400 | 12000 | 6000 | 16.3 | ||
| 1500 | 12000 | 6000 | 16.3 | ||
| 1600 | 12000 | 6000 | 17.6 | ||
| 1800 | 12000 | 6000 | 18.9 | ||
| 2000 | 12000 | 6000 | 21.5 | ||
| 2100 | 12000 | 6000 | 22.8 | ||
| 2200 | 12000 | 6000 | 24.1 | ||
| 2400 | 12000 | 6000 | 25.4 | ||
| 2600 | 12000 | 6000 | 26.7 | ||
| 3000 | 12000 | 6000 | 30.6 | ||
| 3300 | 12000 | 6000 | 33.2 | ||
| 3600 | 12000 | 6000 | 35.8 | ||
| 4000 | 12000 | 6000 | 39.7 | ||
| FRP Mortar Pipe | |
| Item | Reference Specification |
| Product Name | Reinforced Polymer Mortar Pipe (RPMP) / GRP Pipe |
| Diameter Range | DN300-DN3500 |
| Nominal Stiffness Classes | SN2500, SN3750, SN5000, SN7500 and SN10000 N/m² |
| Pressure Classes | PN 0.25, PN 0.6, PN 1.0 and PN 1.6 MPa; availability depends on stiffness class and diameter |
| Wall Construction | Inner surface/corrosion barrier, transition layer, structural layer containing polymer mortar, and external protective layer |
| Structural Materials | Thermosetting resin, glass-fiber reinforcement, graded silica/quartz aggregate and permitted fillers/additives |
| Resin Options | Unsaturated polyester or vinyl ester resin selected for the conveyed fluid and service temperature |
| Joint Options | Double-bell coupling with elastomeric gasket, sleeve coupling, flange, butt-and-wrap or project-specific restrained joint |
| Installation | Primarily buried installation; aboveground, jacking, sliplining or tunnel applications require specific design |
| Pipe Stiffness Selection | Select from burial depth, soil modulus, groundwater, traffic/live load, trench width, bedding, compaction and allowable deflection |
| Pressure Design | Internal pressure class shall be coordinated with long-term hydrostatic design basis, surge pressure and joint capability |
| Deflection Control | Allowable short- and long-term deflection shall be defined by the project specification and installation design |
| Bedding and Backfill | Granular bedding, embedment and compaction shall be selected for the pipe-soil system and local ground conditions |
| Operating Medium | Water supply, cooling water, sewage, stormwater, drainage and compatible industrial fluids |
| Inspection and Testing | Dimensions, wall thickness, stiffness, soundness, joint tightness, hydrostatic/pressure performance and chemical resistance as specified |
| Applicable References | ASTM D3262-25 for gravity sewer service; ASTM D3754-24 or ASTM D3517-24 for pressure applications; ASTM D3839-25 for buried installation; ISO 23856:2021 where specified |
| Required Inquiry Data | Medium, pressure, surge, temperature, DN, flow, stiffness class, burial depth, soil data, groundwater, traffic load, bedding/backfill, joint type and applicable standard |
| Reinforced Polymer Mortar Pipe Thickness Matrix | ||||||||||||||||||
| DN / Diameter (mm) | SN2500 | SN3750 | SN5000 | SN7500 | SN10000 | |||||||||||||
| PN 0.25 | PN 0.6 | PN 1.0 | PN 0.25 | PN 0.6 | PN 1.0 | PN 0.25 | PN 0.6 | PN 1.0 | PN 1.6 | PN 0.25 | PN 0.6 | PN 1.0 | PN 1.6 | PN 0.25 | PN 0.6 | PN 1.0 | PN 1.6 | |
| 300 | 5 | 5 | 5 | 5 | 5 | 5 | 5.4 | 5.3 | 5.3 | 6.1 | 6.1 | 6 | 5.8 | 6.7 | 6.7 | 6.5 | 6.3 | |
| 400 | 5.7 | 5.7 | 5.5 | 6.3 | 6.3 | 6.3 | 6.8 | 6.8 | 6.6 | 8 | 8 | 7.5 | 7.4 | 8.5 | 8.7 | 8.3 | 8.1 | |
| 500 | 6.9 | 6.7 | 6.6 | 7.7 | 7.7 | 7.5 | 8.5 | 8.4 | 8 | 9.7 | 9.5 | 9.1 | 8.8 | 10.7 | 10.5 | 10.1 | 9.8 | |
| 600 | 8.2 | 7.7 | 7.7 | 9.2 | 9.1 | 8.5 | 10.2 | 9.7 | 9.3 | 11.5 | 11.4 | 10.7 | 10.5 | 13 | 12.4 | 11.7 | 11.5 | |
| 700 | 9.5 | 8.8 | 8.6 | 10.8 | 10.3 | 10 | 12 | 11.3 | 10.7 | 13.6 | 13 | 12.4 | 11.9 | 15.2 | 14.5 | 13.5 | 13.1 | |
| 800 | 10.9 | 10.2 | 9.9 | 12.4 | 11.5 | 11 | 13.7 | 13.2 | 12.1 | 15.8 | 14.7 | 14 | 13.5 | 17.5 | 17 | 15.2 | 14.8 | |
| 900 | 12.2 | 11.4 | 10.8 | 14 | 12.9 | 12.3 | 15.5 | 14.4 | 13.5 | 17.9 | 16.9 | 15.6 | 15.1 | 19.8 | 18.6 | 17.1 | 16.6 | |
| 1000 | 13.5 | 12.4 | 11.9 | 15.6 | 14.2 | 13.5 | 17.3 | 16 | 14.9 | 20 | 18.5 | 17.3 | 16.5 | 22.2 | 21 | 18.8 | 18.2 | |
| 1200 | 16 | 14.7 | 14 | 18.5 | 16.8 | 16.2 | 21 | 19.1 | 17.8 | 23.7 | 22 | 20.3 | 19.7 | 26.3 | 23.6 | 22.4 | 21.6 | |
| 1400 | 18.2 | 17 | 16 | 21.5 | 19.6 | 18.5 | 24 | 22 | 20.3 | 27.4 | 25.4 | 23.4 | 22.6 | 30.5 | 27.5 | 26.4 | 25.2 | |
| 1600 | 21.3 | 19.2 | 18.3 | 24.1 | 22.2 | 21 | 27.6 | 24.8 | 23 | 22.4 | 31.3 | 29 | 26.6 | 25.8 | 34.6 | 31.2 | 29.8 | 28.4 |
| 1800 | 23.3 | 21.5 | 20.5 | 27.2 | 25 | 23.5 | 30.8 | 27.6 | 25.8 | 25.2 | 35 | 32.4 | 29.9 | 29 | 39 | 35 | 33.1 | 31.4 |
| 2000 | 25.9 | 24 | 22.5 | 30 | 27.5 | 26 | 34 | 30.5 | 28.5 | 27.7 | 38.7 | 36 | 33 | 31.8 | 43 | 38.6 | 36.6 | 34.8 |
| 2200 | 28.5 | 26.1 | 24.7 | 32.8 | 30 | 28.5 | 37 | 33.5 | 31.2 | 30.4 | 43 | 39.3 | 36.2 | 35 | 47.1 | 42.3 | 40.2 | 38.1 |
| 2400 | 31.1 | 28.4 | 26.8 | 36 | 32.8 | 30.9 | 40.3 | 36.4 | 34 | 33.2 | 46.2 | 42.8 | 39.2 | 38 | 51.5 | 46.2 | 44 | 41.5 |
| 2600 | 34 | 30.7 | 29 | 39 | 35.2 | 33.4 | 44 | 39.4 | 36.5 | 35.8 | 50.4 | 48 | 42.4 | 41.2 | 55.7 | 50 | 47.5 | 45.5 |
| 2800 | 38 | 34 | 32 | 43 | 39 | 37 | 49 | 44 | 41 | 40 | 55 | 50 | 47.5 | 46.5 | 62 | 57 | 53 | 52 |
| 3000 | 39 | 36 | 35 | 45 | 42 | 40 | 50 | 46 | 44 | 43 | 60 | 59 | 58 | 55 | 65.5 | 60.5 | 57 | 55 |
| 3200 | 42 | 39 | 38 | 50 | 50 | 42.5 | 55 | 50 | 48 | 47 | 61 | 58 | 57 | 56 | 67 | 64 | 63 | 61 |
| 3400 | 52 | 49 | 47 | 57 | 52 | 50 | 63 | 58 | 54 | 53 | 67 | 62 | 59 | 57 | 73 | 68 | 64 | 62 |
| 3500 | 53 | 50 | 48 | 58 | 53 | 49 | 64 | 59 | 55 | 54 | 69 | 63.5 | 60 | 59 | 75 | 70 | 62.5 | 61 |
English
