Henan Liwei Industry Co., Ltd. is a professional manufacturer of water supply and drainage materials. Our main products include Single/Double Sphere Rubber Joint, expansion joint, Ball Joint, Flange, steel dismantling joint, Carbon Steel/Stainless Steel Metal Expansion Joints, Fabric Expansion Joints, valve parts, pipe parts, various kinds of stainless steel compensators, duct fabric compensators, advanced soft sealing gate valves and flange butterfly valve.  We will explain the pipeline construction of waterproofing casing here.

1. Waterproof casing head adopt nodular cast iron pipe, rubber ring socket interface, the pipe bridge using D325 x 8 welded steel pipe, along the embedded pipe using D219 x 6 welded steel pipe.
2. Before construction needs to test of pipe fittings and valves, their level of stress should not be below the pipeline working pressure of 1.5 times, after the material approach and tested before pipe to pipe and accessories, including documentary evidence and physical examination.
3. Waterproof casing pipe in the transportation, loading and unloading and stacking process it is forbidden to throw or fierce collision. The laid of the pipeline shall be carried out in the inspection qualified rear can, before laying pipes for pipe material, pipe fittings and so on to conduct a appearance inspection, found that there is a problem of pipe and pipe fittings shall be used.
4. Lifting of waterproof casing pipe into the slot, should use reliable soft belt spreader, smooth groove, shall not be violent collisions with the tank bottom and wall. Scattered along the groove configuration when the piping, reduce the secondary handling, in order to ensure the accurate position of the scale level, should be placed in a tube with a center inspection when the pipeline coordinates of center line is flagging whether the center alignment with the center of the level of overlap.

Liwei enjoys a good reputation for good quality and low price. We sincerely welcome all friends from different industries to cooperate with us. We also believe we can establish long term cooperative relationship and create a bright future with you.