Outer wall anti-corrosion of spiral tube is divided into three categories, namely: single-layer PE and 2PE / 3PE anti-corrosion, the following spiral pipe manufacturers to do one by one for your introduction:
1, Single PE anti-corrosion steel pipe
Single-layer PE anti-corrosion steel pipe is the use of shower coating process (also known as the curtain method), the intermediate frequency heated steel pipe rotation, the top of the steel pipe is filled with polyethylene powder container, by pouring the surface of steel pipe coated with polyethylene coating Floor. Implementation of the standard CJ / T120-2008 water supply plastic composite pipe.
2, 2PE anti-corrosion steel pipe
Pipeline two PE preservative structure, the first layer of adhesive (AD), the second layer of polyethylene (PE), two kinds of material integration, the thickness of each layer with the same three PE: SY / T0413-2002 buried steel pipeline polyethylene coating technical standards GB / T23257-2009 Buried steel pipe polyethylene coating technical standards.
3, 3PE anti-corrosion
Pipe three PE preservative structure: 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. Three materials into one, and firmly with the steel pipe to form a good coating. Diameter range Φ60 ~ Φ1420.
