Black Hollow Section is made of Q235 hot rolled or cold rolled strip steel or coil as the base material.The utility model relates to a hollow square lightweight thin-walled steel pipe made by cold bending process.
Black steel pipe parameter
The thickness is generally about 1.0mm-30mm
Length: 1-24 meters
Diameter :19 * 19mm-250 * 250mm
Black hollow square steel pipe application:
conveying water, gas, air, oil and heating steam and other general low pressure fluids and other high load welded structural parts.