... Be Provided)StandardASTM, ASME, DIN,GB,JIS,ASNI,BSUsageUsed For Structure, Accessorize And ConstructionEndsUsually Plain ,But Can Be ... Beveled Or By Your ChoiceSurfaceBared Or Black Painted, Galvanized Or With Oiled Or ... Rectangular Pipes Are Also Provided Specification 20X40~600X400mm Wait for your inquiry A36 ERW Galvanized Square Steel Hollow Pipe