HS Code. 7306610000. Special Section Tube /square steel pipe rectangular hollow section welded pipe galcanized pipe from China shs rhs. Production detail. Commodity. SHS RHS HOLLOW SECTION STEEL TUBE /SQUARE AND RECTANGULAR STEEL PIPE. O.D. 20*20-1000*1000mm/ 20*30-600*800mm. W.T.Black Welded Steel Pipe for Construction Material with Low offers flexible prices for Steel Pipes variations depending on the importing country and quantity. Category Steel Pipes Price Range $550