... -SCH160s. GUOBANG STEEL have Pipe and Pipe Fittings process workshop,ISO9001:2008,PED97/23/EC,and AD2000,GOST and RTN certfied, month ... each piece),trade term(FOB,CIF,EXW),Packing, special requirment(100%Hydraulic Test/UT/ET)etc.1) Name: Butt-welding Elbow ...