We GNEEsteel produce in strict accordance with API 5CT American Petroleum Institute standards to provide customers with high-quality products.
We are the leading casing and tubing manufacturer from China.and can be strictly tested by SGS, BV, DNV, Lloyd's third party inspection.
Casing Size: OD: 4-1/2" - 30" (114.3 mm - 762 mm)
Tubing Size: OD: 2-3/8" - 4-1/2" (60.3 mm - 114.3 mm)
WT: 0.205" - 0.635 mm; Length: R1 (4.88 m - 7.62 m), R2 (7.62 m - 10.36 m), R3 (10.36 m - longer)
Standard: API 5CT, JIS G3439, BS EN ISO 11960, NF M87-207
Material: H40, J55, K55, N80-1/Q, C75, L80, C90, C110, P110, T95, Q125
Usage: Conveying gas, water, oil, natural gas






