Black Square Carbon Welded Steel Pipes

Product Details

Product Details

Produce Size



ISO9001-2008 ISO14001-2004 OHSAS18001-2007

Wall Thickness





ASTM A500; EN10219; EN10210

Surface Finish

Bare; Varnish, Galvanized

Raw Material

B, Q195 Q235 Q345 SS400 S235JR , S275J2H, S355J2H, S355J2, S355JR,

Secondary or Not

Non Secondary

Payment Terms


Delivery Terms

Within 30 days after the receipt of the deposit.


In bundle; bulk; as required



For the economic section steel pipe. Including cross-sectional contours that are non-circular, equal wall thickness, variable wall thickness, lengthwise variable diameter and variable wall thickness, section symmetry and asymmetry. Such as square, rectangular, tapered, trapezoidal, spiral and so on. Shaped steel pipes are more adaptable to the specific conditions of use, saving metals and increasing labor productivity in parts manufacturing. It is widely used in aviation, automotive, shipbuilding, mining machinery, agricultural machinery, construction, textile and boiler manufacturing. The methods for producing shaped tubes are cold drawing, electric welding, extrusion, hot rolling, etc., and the cold drawing method has been widely used.

A welded steel pipe is a steel pipe which is welded and formed by a steel strip or a steel plate and deformed into a circular shape or a square shape, and has a joint on the surface. The blank used for welded steel pipes is steel or strip.

Third Party inspection that is preferred by new customers is proved to be convincing. Through years of operation, M/S Ruicheng Steel has established stable contact with world famous third party inspection authorities, like Lloyd`s, BV, SGS, ABS, Intertek, etc. More than 10,000Mtons of steel pipes, tubes, fittings and flanges have been inspected by them.

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