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The steel grades of common oilfield API-5CT casing pipe include J55, K55, N80-1, N80Q...
API 5CT J55/K55/N80/P110 Casing Coupling 4 1/2" to 20" Api Casing Coupling ...
Product: top quality 13 Chrome 3 1/2 eue casing /tubing coupling Material: H40.J55...
Product: top quality 13 Chrome 3 1/2 eue casing /tubing Material: H40.J55.K55.N80....
FROM 1.09 "-20" Standard according to API 5CT Length Random length, o...