Black hollow square steel pipe parameters:Wall thickness: 0.5mm-16mmLength: 5.5 meters, 5.8 meters, 6 meters, 11.8 meters, 12 meters, etc., other length can be selected according to user requirements.External diameter: 6.5 x6.5mm - 400 x400mmTolerance: wall thickness ± 0.05mm length ±6mm diameter ±

Stainless steel tubing features seamless and welded tubing, cold worked, annealed and pickled in a range of diameters and stock lengths.Offering 304/304L and 316/316L alloys, our stainless steel tubing mixes corrosion resistance and strength and is ideal for use in harsh conditions such as brine, ch

The characteristics of galvanized steel pipe:Both black and galvanized steel tubes are made of steel, but galvanized steel tubes have zinc coating, while black steel tubes do not.So it's a good distinction.How does galvanizing protect steel pipe?Galvanized steel pipe is a layer of galvanized protect