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 ±

There is no free oxygen in the completely pressed carbon steel alloy.In simple terms, deoxidized or completely killed steels are produced without oxygen by adding a reagent before casting.Therefore, anoxia does not promote gas evolution during alloy solidification.This means that the fully killed ca

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 parameterThe thickness is generally about 1.0mm-30mmLength: 1-24 mete

Black Painted Seamless Steel Pipes 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 hollow square steel pipe parameterThe thickness is generally about

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 parameterThe thickness is generally about 1.0mm-30mmLength: 1-24 mete