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Standard thickness structure 3PE corrosion and corrosion of each preservative

3PE coating: the underlying epoxy powder (FBE), middle adhesive (AD), the surface layer of polyethylene (PE) composition.


The first layer of epoxy powder (FBE> 100um)
The second layer of adhesive (AD) 170 ~ 250um
The third layer of polyethylene (PE) 2.5 ~ 3.7mm

The main steps are: surface rust (Sa2.5 level), intermediate frequency heating (heating limit temperature steel and meet the following requirements FBE powder temperature), FBE electrostatic spraying, AD / PE winding (side, under a variety of ways), water cooling (more than three steps key steps), port polished. Test items: coating thickness, adhesion (room temperature, high temperature), resistance to environmental stress cracking, 30 days / 24 hours cathode peeling, creasing, bending, DSC curing rate.

keywords:LSAW welded steel pipe

Hebei ChongSheng Special Steel Pipe Co.,Ltd.
Add: YANSHAN COUNTY,HEBEI PROVINCE,CHINA