china supply q195 low carbon black steel hot dip ...
China China Supply Q195 Low Carbon Black Steel Hot DIP ... China Supply Q195 Low Carbon Black Steel Hot DIP Galvanized Coating Square Tube/Rectangular Hollow Tubular Steel Pipe PRODUCT DESCRIPTION Product Characteristics Mainly character is the welding beam is smooth, two end no burr, hardness is very strong, so some special material can be used for machine components.
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