All Coupling Stock is certified to API Standards by an independent 3rd party
laboratory prior to coupling manufacturing. After machining all couplings undergo 100% thread inspection. Color Coding and Marking as per API5CT Standard. MTRs are available for all couplings.
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Trade Leads Directory -> All Trade Leads -> Industrial Supplies -> Cast & Forged -> Coupling EUE 3-1/2" 8RD API5CT N80 Tubing copper plated
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