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FROM 1.09 "-20" Standard according to API 5CT Length Random length, o...
API 5CT J55/K55/N80/P110 Casing Coupling 4 1/2" to 20" Api Casing Coupling ...
Petroleum geological seamless tube Company Hebei Borun Steel Trade Co., Ltd Product...
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2 3/8"-20" API 5CT tubing and casing Coupling and Connectors for oilfiled Api Casing ...
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