... Commodity Q195/Q235/Q345 ERW Black Welded Steel Pipe Dimension20-246MMThickness0.6-2.5MMLength5.8-12M or ... treatmentplain,beveled, /threaded with sockets/coupling and plastic caps/flangeSurface treatmenthot dipped galvanized, oiled or black painted to ... and water supply projects; building, central air-conditioning pipe, fence, threading pipe, rolling doors, metal frame, support tube, furniture, ...