... , N80, L80, T95, 6 5/8" bushing pipeCasing and Tubing Standard: API 5CT,Carbon Steel6 5/8"LUYE30MeterLength: R2, R3.Application: serves as ... , K55, N80, L80, T95, 8 5/8"oil casing Casing and Tubing Standard: API 5CT,Carbon Steel8 5/8"LUYE30MeterLength: R2, R3.Application: serves ... -win. API 5CT J55,K55,N80,L80 oil drilling use carbon steel welded Oil casing pipe