Multi-Position WPS: How One PQR Covers All Positions
AWS D1.1:2025 position qualification ranges explained for CWIs and fab shops. Learn how a single PQR can support WPS coverage from 1G through 4G and 1F through 4F.
Fab shops running multiple structural projects frequently ask whether they can cover every welding position with the fewest possible Procedure Qualification Records. The answer under AWS D1.1:2025 is yes — but only when the test positions are chosen deliberately and the essential variable ranges are documented correctly. This article walks through the position qualification hierarchy, explains how groove qualifications carry into fillet categories, and offers a practical approach to building a lean WPS library that covers all positions.
How AWS D1.1 Defines the Four Groove Positions
AWS D1.1:2025 assigns standardized position designations for groove welds:
1G — flat position, axis horizontal, weld face up
2G — horizontal position, axis vertical, joint face vertical
3G — vertical position, axis vertical, weld progression upward (or downward with specific electrode restrictions)
4G — overhead position, axis horizontal, weld face down
For fillet welds the equivalents are 1F, 2F, 3F, and 4F, following the same spatial orientations. The position qualifier is part of the WPS because the welder's physical relationship to the puddle — and therefore the acceptable parameter window — changes meaningfully between them.
The Qualification Hierarchy: What Each Test Position Covers
AWS D1.1 establishes a hierarchy of difficulty. A test conducted in a more demanding position qualifies the welder (and the WPS, when test positions govern) in all less demanding positions. The standard hierarchy for groove welds is:
Test Position
Groove Positions Qualified
1G only
1G
2G only
1G, 2G
3G only
1G, 2G, 3G
4G only
1G, 4G
3G + 4G
All positions: 1G, 2G, 3G, 4G
The gap that surprises many shops: 4G alone does not cover 2G or 3G. Overhead qualification travels only to flat in the hierarchy; it does not imply vertical or horizontal competence. This is why the 3G + 4G combination is so common in structural shops — it closes every groove position with two test coupons from a single PQR event.
Groove Qualification Extends to Fillet Positions
AWS D1.1 has a standing rule that groove weld qualification subsumes the corresponding fillet categories. A PQR that qualifies groove positions also qualifies fillet welds in at least those same positions, and often more. The practical outcome: a 3G + 4G groove PQR qualifies all four fillet positions (1F, 2F, 3F, 4F) with no additional fillet-only test required. Shops that run only fillet-weld production work can sometimes satisfy auditors by pointing to an existing groove PQR, provided the thickness range, base metal group, and process variables are all within scope.
Essential Variables That Interact With Position
Position itself is not always an essential variable for the WPS under AWS D1.1:2025 Table 6.6, because the procedure's qualification range flows from the test positions documented in the PQR, not from a separate position parameter on the WPS form. What matters is that the WPS correctly declares which positions are authorized, based on the test positions in the supporting PQR.
However, several essential variables are directly tied to position-sensitive parameters:
Vertical progression direction. Upward vs. downward welding in the 3G position is an essential variable. A PQR run vertical-up does not qualify vertical-down, and vice versa. FCAW-S electrodes classified E71T-8 or E71T-11 are the only self-shielded wires prequalified for vertical-down travel; most solid and metal-cored wires prohibit vertical-down for CJP groove welds. Document progression clearly on the WPS.
Heat input and pass geometry. Overhead (4G) typically requires reduced travel speed and tighter current windows compared to flat. If the WPS ranges were established from a 1G test and the shop later assigns the WPS to overhead work, the parameters may not match qualified ranges. The PQR must cover the positions actually used.
Shielding gas. GMAW/FCAW-G shielding gas changes are essential variables (Table 6.6 row 32). If a shop tests in the flat position with a specific gas blend and then welds overhead, any gas change made to accommodate overhead puddle control requires a new test. Rule library based on AWS D1.1:2025; verify against your governing edition.
Building a Lean WPS Library With Full Position Coverage
A structural fab shop handling general fabrication can cover all groove and fillet positions with as few as two PQR events per process, provided each event tests both 3G and 4G:
SMAW PQR 001 — E7018 (H4), 3/8 in. [10 mm] test plate, 3G and 4G, AWS D1.1 Group I/II base metals, covers flat through overhead groove and all fillet positions.
FCAW-G PQR 002 — E71T-1C-H8, same geometry and test positions, covers flux-cored applications across all positions.
SAW PQR 003 — flat (1G) only, as SAW is inherently limited to flat and horizontal by puddle control physics. No overhead coverage needed for SAW.
From these three PQRs the shop can write WPS documents authorizing every common position for each process. An ASME Section IX or API 1104 job that arrives later would need separate qualification, since AWS D1.1 PQRs are not transferable across codes without engineering review. See Dual Qualification: One PQR for AWS D1.1 and ASME IX for that scenario.
Test Coupon Orientation and Inspector Witness
When running a 3G + 4G test from a single PQR, the inspector (or CWI witness) must confirm that each plate is actually oriented and welded in the stated position, not just labeled that way after the fact. Common audit failure: test plates listed as 4G on the PQR but welded flat on a positioner set to 0°. The welder tacking the coupon at 45° while the table tilts the rest during fill passes also invalidates the position claim.
Prequalified WPS documents under AWS D1.1 Clause 5 are not subject to PQR test requirements for position — the prequalified status is granted by meeting the listed joint geometry, base metal, filler metal, and parameter constraints. A shop writing a prequalified WPS may list any of the four groove positions without a supporting PQR, as long as all other Clause 5 requirements are satisfied. However, if the WPS changes a single essential variable outside prequalified limits, the entire document converts to a tested (Clause 6) WPS — and then position coverage must come from actual test coupons.
What a WPS Auditor Checks for Position Coverage
During an AISC certification audit or third-party WPS review, the auditor will typically:
Pull the WPS and identify all positions listed as authorized.
Locate the supporting PQR(s) and verify the test position(s) documented.
Confirm the qualification range logic: are the authorized positions actually covered by the test positions?
Check for upward/downward vertical progression consistency between PQR and WPS.
Confirm fillet coverage flows from groove qualification if no standalone fillet PQR exists.
The most efficient qualification path for a structural shop with varied work is a 3G + 4G test event per process. Two plates, one PQR record, complete position coverage. Pair that with clear WPS language about vertical progression direction and the position-sensitive parameter ranges, and the entire audit trail holds up under scrutiny.
If position coverage gaps exist in your current WPS library, verify against your PQR test records before the next project bid. A missing 4G PQR can delay a job start when the contract inspector arrives and asks for the paperwork. Start building the right library now at /pricing.
FAQ
Frequently asked.
Does qualifying in the 3G position cover 1G and 2G under AWS D1.1?
Yes. Under AWS D1.1:2025, a PQR test conducted in the vertical (3G) position qualifies the WPS for flat (1G) and horizontal (2G) groove welds as well, because those positions are considered less demanding. However, it does not cover overhead (4G) unless that test is also run.
Can one PQR test plate qualify both groove and fillet weld positions?
A groove weld PQR qualifies the corresponding fillet positions automatically. A 3G/4G PQR covers all fillet positions (1F through 4F) per AWS D1.1 qualification range tables.
What is the most efficient single test position for maximum position coverage?
Running both 3G and 4G test coupons from a single PQR record gives you groove qualification in all four positions and fillet weld qualification in all four fillet positions — the broadest coverage possible from two plates.
Does a pipe PQR (6G) cover plate positions under AWS D1.1?
AWS D1.1 governs structural steel, not piping. The 6G test concept applies under ASME Section IX and API 1104. Under AWS D1.1, plate test positions in 1G, 2G, 3G, and 4G are the standard qualification vehicle. A CWI should not accept a pipe 6G PQR as D1.1 structural qualification without an engineering review confirming applicability.