Difference Between Plastic Coated Steel Pipe And Plastic Lined Steel Pipe
Differences in appearance
plastic coated steel pipe to steel pipe as a carrier, the surface coated with polyethylene and other plastic soot. Steel pipe inside and outside of the surface layer wipe evenly, some special need to have an anticorrosion layer, and according to the use of the decision whether to add flame retardant, has reached the fire prevention purpose.
plastic-lined steel pipe, although the same to steel pipe as a carrier, but the surface is galvanized spray, lined with plastic layer or anti-corrosion layer, the market, lined with PE or PP-R plastic layer mostly for drainage and water supply.
Production process differences
plastic coated steel pipe production process is the steel pipe first pretreatment heating for rapid plating, to be cured to shape. Plastic lined steel pipe includes plastic lining and rotomolding two processes.
plastic lining process is the surface of the plastic pipe fittings rubbed adhesive into the steel pipe has long been heated inside the plastic pipe fittings heat deformation. Rotational molding process is the steel pipe pretreatment heating the plastic soot roll spread to the inner wall of the steel pipe, to be its refrigeration dry solid.
Connections on the different ways
plastic coated steel pipe connection mainly has a flange connection, groove connection, screw connection, etc.; and plastic lined steel pipe is the choice of flange connection women and groove connection.
plastic coated steel pipe in the construction and installation can be cut and applied at will, will not occur because of the plating layer shrinkage problems, in the construction of the pre-processing before the construction can be good, convenient construction directly with. Plastic lined steel pipe can not be cut at random, sometimes also produces shrinkage problems and can not be pre-treated in the construction.
