... seamless steel pipe Steel grade10#,20#,45#,16Mn,st37,st52,st42Quality standardGB8162-99,BSEN10296,JIS G3463-2006,GB/T12770-2002,ASTM ... Address: No.14,District2,Dadong Steel Pipe Market, Development Zone,liaocheng, shandong, china Tel:86-0635-2111838Fax:86 ... cn220117360Hotmail id: lctrgg_exporting Welcome you inquire in steel pipe and discuss with you together!! 20# sch60 galvanized seamless steel pipes