API 5CT Coupling Stock – Seamless Tube Material for Manufacturing API Couplings Used to Connect Casing and Tubing in Oil and Gas Wells.
Product Spotlights
Grades: J55, K55, N80, L80, P110, Q125
Forms: Tube stock / Blanks / Fully machined couplings
API 5CT Coupling Stock – OCTG Coupling Material for Casing & Tubing
Grades J55 / N80 / L80 / P110
Product Overview
API 5CT coupling stock – seamless tube material for manufacturing API couplings used to connect casing and tubing in oil and gas wells. API Monogram licensed.
Grades: J55, K55, N80, L80, P110, Q125
Forms: Tube stock / Blanks / Fully machined couplings
✅ API 5CT 10th Edition / ISO 11960
✅ Same grade as pipe – API compliant
✅ Seamless – thread integrity
✅ Sour service grades (L80 ≤23 HRC)
✅ 100% tested – MTC with heat number
Grade Selection Guide
| Pipe Grade | Coupling Grade Required | Sour Service |
|---|---|---|
| J55 / K55 | J55 or higher | No |
| N80 | N80 or higher | No |
| L80 | L80 (≤23 HRC) | Yes |
| P110 | P110 or higher | No (not for sour) |
Supply Options
| Form | Lead Time |
|---|---|
| Coupling material tube | 7-15 days |
| Coupling blanks (rough machined) | 15-25 days |
| Fully machined couplings | 20-30 days |
Contact
📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website:
Tags: API 5CT Coupling Stock Coupling Material OCTG
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