1.Brand: Xinlian2.Place of Origin: Hebei China3. Standard: API 5CT-0735 & ISO9001:2000.4.specifcation: 4 1/2- 13 3/85. 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.***** STC, LTC, BTC9. Length:...