How to Check if Grooves on Stainless Steel Pipes Are Qualified
Key Takeaways for Groove Acceptance Check
Groove quality is vital for stainless steel pipe connection performance. Improper grooving causes coupling slip‑off and leakage under working pressure.
Visually check the groove shoulder first. Qualified grooves feature a distinct vertical shoulder. Rounded arc transition or insufficient groove depth counts as defects, which will trigger slipping and leakage.
Measure residual wall thickness with a caliper. After grooving, the remaining wall thickness at the groove should within 75% of the original pipe wall thickness. Too‑thin residual wall reduces pipe strength and creates safety risks.