square hollow section steel pipe 1.LENGTH: 2-12M 2.SIZE:15*15MM--1000*1000MM ... Q235, Q345, ECT COMPANY PROFILE Belong to TIANJIN YUANTAI DERUN PIPE GROUP, TIANJIN YUANTAI INDUSTRIAL& TRADE CO.,LTD is the leading ... ) SUPPLY OF A WILD SPECTRUM OF square hollow section steel pipe 1 .Shape: square or rectanglar2 .Size:100*100 200* ... +/-0.02mmPRODUCTSHOW PACKING: TUBES SHOWS square hollow section steel pipe