1.Standard: API 5CT-0735 & ISO9001:2000. 2.Brand: Xinlian 3.Place of Origin: Hebei China 4. Specifcation: 4 1/2"- 13 3/8" 5. OD: 114.30 - 339.72 mm (4.5000 -13.375 in) 6. WT: 5.21 -13.06 mm (0.205 -0.514 in) 7. Grade: K55, J55, N80, H40, L80, M65, C90, C95, T95, P110, Q125. 8.Thread: STC, LTC, BTC 9. Length: R1/R2/R3 10.Technique: Seamless 11.Type: Carbon Steel Pipes 12. Inspectation: NDT, TESTED, MTC, third party inspection (SGS, BV, ABS etc.) 13.Usage: Our products are wide used in petroleum and natural gas industry, power station, machinery and so on. 14. Trade terms: EXW, FOB, CFR, CIF, etc. 15.Terms of payment: T/T or L/C at sight.