API 6A Working Pressure & PSL Envelope Checker

Check a target working pressure and product-specification level against China Welong’s table-verified production envelope — before you build the RFQ. Ratings at or below 15,000 psi / PSL 3G are standard stock capability; higher ratings are consult-the-factory.

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Advisory only. API 6A rates equipment at discrete working pressures (2,000–20,000 psi) and product specification levels PSL 1–4 (3G adds a gas test). China Welong’s standard table-verified envelope is ≤ 15,000 psi at PSL 3G; 20,000 psi / PSL 4 critical service is quoted case-by-case. Final rating, bore and material class are confirmed against your well data at engineering review.