... & as customers' request 3.CIQ certificate, ISO9001 4.JIS and GB standard low price Company profile:Tangshan Qishuo Trade Co., Ltd ... ,IPEAA80,IPEAA100),Steel H Beam, etc. with the standard of GB, JIS, IPE, ASTM, DIN.And we welcome our customers from ... Trade Co.,LTD. channel steel sizes 50*37*4.5----280*84*9.5mm hot rolled