AWS D1.1/D1.1M:2025

Choose a path

Paths do not share logic with Section IX. A production WPS is never created first — except a preliminary WPS used only to weld the qualification coupon.

Qualify a procedure (PQR)

Weld a coupon, record mechanical tests, compute Table 6.1 / 6.2 ranges, then generate production WPSs from this PQR.

Prequalified WPS

Clause 5 only. Select a specific Fig. 5.1 / 5.2 detail ID (e.g. B-U2a) and keep root opening, root face, and bevel angle inside the figure tolerances. Generic names such as single-V are not details — otherwise use Clause 6/PQR.

Preliminary WPS (coupon only)

For welding the qualification test plate or pipe. Not valid for production. After the PQR is signed, generate the production WPS from the PQR.