For the purpose of transportation Of gas, water, oil in oil and Gas industry L245,L290,L320,L360,L390,L415GB/T9711.1GB/T9711.2ISO3183-1ISO3183-2For the purpose of transportationOf gas, water, oil in oil andGas industry.A,B,X42,X46,X56,X60,X65API Spec 5LBASTM A53ASTM A106 Pipeline tube