What is the Pre Galvanized Steel Pipe?
The pre-galvanized welded steel pipe refers to welded tube which undergo degreasing,rush
removal,phosphorization,zand drying processes before galvanization.
The treatments before galvanization allow the product to be
conveniently plated with a zinc coating,and also ensure uniform
coating thickness,strong coating adhesion,and improved corrosion
The per-galvanized welded pipes are widely used in heat,water,and natural gas supply
systems,agricultural greenhouse construction,steel structure
construction,as well as low and medium pressure piping system.
How to Produce this Pre Galvanized Round Pipe?
This pre galvanized steel pipe shall be manufactured from pre-galvanized steel conforming to ASTM
A53. The coated steel shall be cold formed and welded into tube
utilizing the high frequency induction welding process capable of
forming a weld bead stronger than the parent metal. The outside
coating damaged during welding shall be repaired by metallizing
(spraying molten zinc wire). The inside weld area damaged during
welding shall be left unprotected.
The zinc coating on the steel sheet shall conform to ASTM A525
Grade G60 and G120. The exterior and interior surface shall have a
combined zinc weight ranging from 0.60 oz/sq ft (or 0.45 oz/sq ft
each side) to 1.20 oz/sq ft (or 0.60 oz/sq ft each side). These
coating weights do not apply to the inside welded area.
RAW Material-Pre Galvanized Steel Strip:
What Sizes of Pre Galvanized Round Pipe We can supply?