HDPE pipe fittings – Stub End / Flange Adaptor – are a key component commonly used in pipe connection systems, typically used in conjunction with backing rings.These flange adapters are manufactured using an integral injection molding process, resulting in a dense structure and stable performance. They are widely used in water supply and drainage, irrigation, water treatment, and industrial fluid transport.
Main Features of HDPE Flanges:
1. One-piece injection molding, high strength: Utilizing a one-piece injection molding process, there are no welds or splices. The uniform molecular structure results in excellent pressure resistance and impact resistance, ensuring safer and more reliable long-term operation.
2. Excellent corrosion resistance: HDPE material exhibits good resistance to acids, alkalis, salts, and various chemical media, making it suitable for complex working environments.
3. Good sealing performance: When used with steel or plastic slip-on flanges and rubber gaskets, it achieves efficient sealing and strong leak-proof capability.
4. Lightweight and easy to install: Lighter than metal fittings, reducing transportation and construction costs, and allowing for quick pipe connection.
5. Long service life: Anti-aging and wear-resistant, with a service life of over 50 years under normal operating conditions.
6. High dimensional accuracy: Injection mold production ensures uniform interface dimensions, adapting to international standard flanges (such as ANSI, DIN, ISO, etc.).
Main Applications of HDPE Flanges:
1. Pipe and Valve Connections: Used for flange connections between HDPE pipes and valves, pumps, flow meters, and other equipment.
2. Detachable Interfaces for Pipe Systems: Facilitates future maintenance, repair, and equipment replacement.
3. Transition Connections Between Pipes of Different Materials: Enables reliable connections between HDPE pipes and steel pipes, PVC pipes, or pipes of other materials.
4. Water Supply, Drainage, and Irrigation Systems: A common connection method in urban water supply, agricultural sprinkler and drip irrigation projects.
5. Industrial Fluid Transport Systems: Widely used in chemical, water treatment, power, and mining industries.
![]()
规格dn | 尺寸Size(mm) | 壁厚Thickness | |||||
SPECIFICATION | L | H | D1 | D | SDR17 | SDR11 | SDR9 |
FL50 | 88 | 76 | 56 | 80 | ✓ | ✓ | |
FL63 | 90 | 77 | 75 | 102 | ✓ | ✓ | ✓ |
FL75 | 98 | 84 | 89 | 120 | ✓ | ✓ | ✓ |
FL90 | 110 | 93 | 104 | 135 | ✓ | ✓ | ✓ |
FL110 | 120 | 102 | 124 | 155 | ✓ | ✓ | ✓ |
FL125 | 127 | 107 | 132 | 158 | ✓ | ✓ | ✓ |
FL140 | 127 | 105 | 154 | 188 | ✓ | ✓ | ✓ |
FL160 | 135 | 109 | 174 | 212 | ✓ | ✓ | ✓ |
FL180 | 135 | 105 | 188 | 212 | ✓ | ✓ | ✓ |
FL200 | 155 | 122 | 235 | 268 | ✓ | ✓ | ✓ |
FL225 | 145 | 115 | 232 | 268 | ✓ | ✓ | ✓ |
FL250 | 160 | 128 | 285 | 320 | ✓ | ✓ | ✓ |
FL280 | 160 | 125 | 290 | 320 | ✓ | ✓ | ✓ |
FL315 | 175 | 140 | 335 | 370 | ✓ | ✓ | ✓ |
FL355 | 175 | 140 | 373 | 430 | ✓ | ✓ | ✓ |
FL400 | 180 | 145 | 427 | 482 | ✓ | ✓ | ✓ |
FL450 | 208 | 165 | 475 | 585 | ✓ | ✓ | |
FL500 | 215 | 168 | 530 | 585 | ✓ | ✓ | |
FL560 | 220 | 174 | 582 | 625 | ✓ | ✓ | |
FL630 | 230 | 178 | 642 | 685 | ✓ | ✓ | |
FL710 | 235 | 178 | 737 | 800 | ✓ | ✓ | |
FL800 | 240 | 183 | 840 | 905 | ✓ | ✓ | |
FL900 | 245 | 187 | 930 | 1005 | ✓ | ✓ | |
FL1000 | 250 | 192 | 1030 | 1110 | ✓ | ✓ | |
FL1200 | 300 | 230 | 1230 | 1300 | ✓ | ✓ | |