Specification:oil casing steel pipe 1)Size:114.3-397.3mm 2)Grade:J55 ... NumberBrand NameMinimum Order QuantityUnitAdditional Description 4 1/2" oil casing Casing and Tubing Standard: API 5CT,Carbon Steel4 1/2" ... grade: J55, K55, N80, L80, T95, 10 3/4" casing Casing and Tubing Standard: API 5CT,Carbon Steel10 3/4"LUYE30MeterLength ... 5CT J55,K55,N80,L80 oil drilling use carbon steel welded Oil casing pipe