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Pre-galvanized square pipe

We specialized in manufacturing the full size of square tubes and rectangular tubes:20X20-600X600mm,square tubes,20X30-600X800mm rectangular tubes.

Q195—Grade B, SS330, SPC, S185

Q215—Grade C,CS Type B, SS330, SPHC

Q235---Grade D, SS400, S235JR, S235JO, S235J2

Q345---SS500, ST52, ST37

10#,20#,45#, etc


1.Chemical Component Analysis (C,Si,Mn,S,P)

2.Mechanical Properties (Tensile Strength, Yield Strength, Elongation )

MTC is supplied.

3.Third party inspection: BV,SGS

Our advantage:

1.large inventory
2.high quality,low price
3.good after-sales service
4.short delivery time


Application: Steel struction,Construction pipe,fence pipe, machinery manufacturing, shipbuilding, solar power stents, agricultural and chemical machinery ,bridge ,decoration and etc

Pre-galvanized square pipe/tube is a hollow strip steel, a large number of used for conveying fluid pipe, such as oil, natural gas, water, gas, steam, etc., in addition, doing bending and torsional strength phase at the same time, the weight is lighter, it is widely used in the manufacture of machinery parts and engineering structures. Also commonly used for the production of various kinds of conventional weapons, barrel, shells, etc.

Production process:

(1) General boiler tube temperature under 450 ℃, the domestic pipe mainly use 10, 20 carbon steel hot rolled or cold drawn tube manufacture.

(2) High pressure boiler tubes are often in high temperature and high pressure conditions, when using the pipe under the action of high temperature flue gas and water vapor, oxidation and corrosion will happen.Requirements of steel pipe with high rupture strength, high oxidation corrosion resistance, and have good organizational stability.