Wall thickness of national standard plastic-lined steel pipe

Standard Specification for Wall Thickness of Plastic-lined Steel Pipe General corrosive liquid polyolefin plastic-lined pipe is a qualified steel pipe made of polyolefin modified polymer and steel pipe by special process, which not only retains the strength of steel pipe and traditional connection mode, but also is modified by polyolefin plastic material in different ways. At -25℃ ~+ 105℃, it is an ideal material to replace rubber porcelain, glass fiber reinforced plastic, stainless steel and plastic board.

The connection methods of plastic-lined pipes include special snap ring connection, clamp connection or flange connection, and its construction technology is similar to that of ordinary steel pipes in groove connection and threaded connection.

Extended data:

Matters needing attention in using plastic-lined steel pipes:

1. Pay special attention to the super-large diameter water supply and drainage coating and molding compound of the liner device. When packaging marijuana, you must use oil. White thick paint is mixed with clear oil and coated on both sides of the thread respectively. After winding the twine, it should be oiled again to ensure that all surfaces of the thread are in full contact with the pipe fittings.

2. When installing pipe fittings, first put 1-2 buttons on the pipe fittings by hand, and then tighten the pipe fittings evenly to ensure that there are 2-3 buttons left after installing the pipe. There must be no looseness between the best threaded joints. Clean the hemp yarn at each joint.

3. In order to obtain the best pipe fittings and pipe sections, it is necessary to straighten, shrink concentrically, pass through the retaining ring, clean the removed pipe fittings steel wire, re-oil and twist hemp. It is not allowed to assemble the same thread repeatedly.

4. Seal the nozzle of each opening. The joints after pipeline installation shall be painted with antirust paint. When installing the sleeve, the cut must be flat.