... (ASME SA53) 2) Specification range: OD: 10-76mm; (1)Standard:ASTM A53 BS 1387 GB/T3091 (2)Material:20#,Q195,Q235 ... supply mainsDeep tube wells casing pipes, Gas/Natural gas pipe lines, Oil pipe lines, LPG & other non-toxic gas pipelinesIndustrial Purposes, Sewerage ... , Food Processing, Pharmaceutical, Petrochemical, Chemical, Machine Building, Automobile Seamless Steel Pipe