Features: socket connection between the socket stuffed flexible rubber ring, rubber ring use good flexibility, and exceptional fit socket seal groove, the gap between the fixed socket, so that the gap between the socket ring evenly to prevent debris into the pipe to prevent media leaks. Features: Simple, easy construction, fast, small labor intensity, is elastic interface, can withstand a certain displacement and vibration generated by an external force, with seismic performance, but the interface material demanding for poor foundation, easy vibrations region. ● Simple, easy construction, fast, small labor intensity ● genus elastic interface, able to withstand the forces generated by displacement and vibration ● with seismic performance, but the interface material demanding for poor foundation, vibration-prone areas Dual flat wall plastic composite wound drainage (socket type) Product parameters No. projects require a ring stiffness (KN / m) SN8 ≥8 SN10 ≥10 SN12.5 ≥12.5 SN16 ≥8 2 Impact performance (TIR) ??≤10% 3 ring flexible sample smooth, no reverse bending, no rupture 4 oven test joints melt drains should be no delamination, no cracking creep rate ≤2% 6 5 weld tensile strength Nominal Size / mm nominal diameter pipe can withstand the minimum tensile strength (N) 300≤DN / ID≤500 600 600≤DN / ID≤800 840 900≤DN / ID≤1200 1020 1300≤DN / ID2000 1460 DN / ID≤2000 1600 7 ring flexible sample smooth, no reverse bending, no rupture 8 oven test joints melt drains should be no delamination, no cracking nine creep rate ≤2%