ASTM A53 SCH40 Q235 1/2" pre galvanized steel round pipe

ASTM A53 SCH40 Q235 1/2
ASTM A53 SCH40 Q235 1/2ASTM A53 SCH40 Q235 1/2ASTM A53 SCH40 Q235 1/2ASTM A53 SCH40 Q235 1/2ASTM A53 SCH40 Q235 1/2
CategoriesRound steel pipe
AlbumView larger image
Length6 meters
Steel GradeQ235
Unit PriceUS $ 400-450 / ton
FOB portTianjin,China
Terms of PaymentL/C, Western Union, T/T
Update Time2017-02-25
Detail Information

ASTM A53 SCH40 Q235 1/2" Pre Galvanized Steel Round pipe

What is the Pre Galvanized Steel Pipe?

product showThe 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 resistance.

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.

pre-gi pipe process_01pre-gi pipe process_02pre-gi pipe process_03pre-gi pipe process_04

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:

raw material

What Sizes of Pre Galvanized Round Pipe We can supply?



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