Line pipe Standard ： API SPEC 5L Application ： It is used for conveying gas,water,and petroleum of both the oil and natural gas industries Seamless Line pipe Size Range and Application Size： OD:φ21.3mm～φ609.6mm WT: 2.77mm～59.50mm Variety： oil and gas transportation and offshore pipe line Grade: X42 , X52 , X56 , X60, X65, X70