China Pipe Coupling Manufacturers Carbon Steel Coupling Supplier Galvanized API 5L Line Pipe Coupling Used To Extend The Pipeline
API Line Galvanized Pipe Couplings Features:
These couplings are manufactured in accordance with American Petroleum Institute Specification 5L. All sizes are taper tapped 3/4" per foot on the diameter. Line pipe couplings in sizes 1/8"-1 1/2" are dipped in rust preventative.
And couplings in sizes 2" and larger are phosphated.
Galvanized couplings are electroplated zinc or hot dipped zinc, and galvanizing can increase the corrosion resistance of the steel pipe coupling and prolong the service life.