Coupling RFQ & Verification Checklist

Build a complete API 5CT coupling purchase-order spec in 30 seconds — the documentation that separates a real coupling from a bin blank. Copy it into your RFQ.


  
  
4-Mark Coupling Verification (on receipt): ① stencil matches the PO line item · ② grade colour band (J55 = 1 green, K55 = 2 green; verify other grades on the MTR, never by colour alone) · ③ API monogram present where licensed · ④ heat number matches the EN 10204 3.1 MTR. A missing API marking is cause for rejection.

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