... : steel well Casing Pipe 2 Size: OD 73.03 3 Grade: J55,N80-1,N80Q,P110 Type: API oil well casing ... , API 5CTMaterial: X42.X46,X52,X56,X60,J55,K55,N80Quality : First GradeApplicationRange: Petroleum,chemical,power,gas,water,metallurgy,shipbuilding,construction,etc ... to requirement. b) Anti-corrosion and high-temperature resistant with black painting If you are satisfied with our products,pls send ...