... a106/a53 gr.b sch40/sch80 seamless steel pipe International StandardISO 9001:2001Place of orginTianjin, ChinaSizeOuter Diameter20mm ... to customers’ requirementsSteel materialQ195,Q215,Q235,Q345,ASTM A53StandardBS,GB,ASTM,JIS,DINZinc240— 450g/m2UsageUsed for gas, oil ... ,Ends1) plain2) beveled3) Thread with coupling or capEnd protector1) Plastic pipe ...