Reinforced spiral welded steel pipe is DONGHONG independently created pipeline specially for underground coal mining, it adopted a unique occlusal structure to improve the negative pressure and reduce the wall thickness. Comparing with traditional gas extraction pipe this design make the pipe features with lighter weight, higher ring stiffness and greater Corrosion resistance, plus with cheaper cost the pipe won great reputation among domestic and foreign customers.
The reinforced spiral welded steel pipe is distinguished into dissolve epoxy powder coating, hot-dip galvanizing and stainless steel three types, the maximum production ability can be DN1000MM, have different thickness from 1.5mm to 3.5 mm.