AS/NZS 1554.1 welder qualification — what to check on the structural steel quote
Updated: Jul 9
AS/NZS 1554.1 sets welder qualification by weld category — GP general purpose vs SP structural purpose — with the SP route requiring documented welder tickets, WPS and procedure qualification. A steel quote silent on category and qualification is silent on $5-20k of compliance cost.
By Steve Parker · Trueworks · NZ construction estimation · 5 min
AS/NZS 1554.1 is the welding standard NZS 3404 §10 cites for structural-steel welding compliance. The standard's split between GP (general purpose) and SP (structural purpose) weld categories drives welder qualification, welding-procedure specification (WPS) and inspection rigour. The steel quote that doesn't state the category is hiding the compliance cost.
By Steve Parker · Trueworks · NZ construction estimation · 5 min
What you'll learn in this post
What AS/NZS 1554.1 says about welder qualification, weld category and procedure specification
The three failure modes on NZ structural-steel welding compliance
A worked NZ example and the 5-item checklist before accepting a structural-steel quote
Quick answer: AS/NZS 1554.1 governs structural-steel welding in New Zealand, cited from NZS 3404 §10. The standard splits welds into GP (general purpose, lower-rigour) and SP (structural purpose, higher-rigour) categories. SP welds — required on most primary structural connections — need a written welding-procedure specification (WPS) qualified under AS/NZS 1554.1 §4 procedure-qualification rules, welder qualification tickets to AS/NZS 1554.1 §4.12 (commonly demonstrating qualification in 1G, 2G, 3G or 4G positions per the weld), and inspection under §6 by a person qualified to AS 2214 or equivalent. NZS 5131 sets the steel-fabrication category (CC1-CC4) which feeds back into the inspection rigour. Three failure modes repeat: weld category not stated on the quote, welder tickets not held or expired, and WPS missing for the actual joint geometry. A short, code-cited check before steel award closes the gap.
NZS 3404:2009 §10 covers structural-steel welding compliance, citing AS/NZS 1554.1 as the welding standard. NZS 5131:2016 sets the steel-fabrication construction-category (CC1, CC2, CC3, CC4) which scales the welding inspection rigour from light to full third-party. AS/NZS 1554.1 itself sets:
§3 welding consumables — electrode classification, shielding gas, filler metal
§4 welding procedure — including the welding-procedure specification (WPS) and procedure qualification (WPQR)
§4.12 welder qualification — including welder-ticket requirements
§5 weld category — GP and SP, with named applications
§6 inspection — visual and non-destructive testing requirements
The standard's structure is clear; the on-quote compliance gap is where the problem lives.
What AS/NZS 1554.1 actually says
GP vs SP weld category. AS/NZS 1554.1 §5 defines two categories. GP (general purpose) covers non-structural welds, secondary connections, or welds where the failure consequence is low — typically handrails, light secondary steel, finishing fittings. SP (structural purpose) covers primary structural connections, transferred-load welds, and any weld where the consequence of failure is significant — beam-to-column moment connections, brace connections, base plate welds.
Welding procedure specification (WPS). §4 requires a written WPS for each SP weld type, covering joint geometry, position, consumable, current and voltage range, travel speed, pre-heat, inter-pass temperature, and post-weld treatment. The WPS is qualified under §4 procedure-qualification rules — typically by procedure-qualification record (PQR) testing.
Welder qualification under §4.12. Each welder making SP welds requires qualification — typically a current welder ticket showing the position, consumable, joint type and material thickness range the welder is qualified for. Tickets expire (typically 6-12 months) and need renewal.
Inspection under §6. SP welds require visual inspection by a qualified inspector. Higher-CC categories under NZS 5131 require additional non-destructive testing (NDT) — typically magnetic-particle inspection (MPI) or ultrasonic testing (UT) on a percentage of welds.
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Three failure modes on NZ structural-steel compliance
1. Weld category not stated on the quote. A steel fabricator's quote for "all welding to AS/NZS 1554.1" without naming GP vs SP is silent on the compliance cost. Most primary structural welds are SP. If the fabricator priced the work as GP — without WPS development, without welder-ticket verification, without §6 inspection allowance — the §10 inspection on completion rejects the welds. The remedy is re-weld with qualified procedure and welder, or full third-party NDT to demonstrate compliance retrospectively. Cost: $5-20k on a typical residential portal package.
2. Welder tickets not held or expired. AS/NZS 1554.1 §4.12 requires current welder qualifications for SP welds. Welders move between fabricators; tickets expire; specific joint-position or thickness qualifications are sometimes missing. A fabricator's quote silent on welder-ticket verification leaves the gap. Caught at PS1 / inspection stage, the remedy is either re-qualify the welder, re-weld with a qualified welder, or sub-let the SP welds to a fabricator with qualified personnel. Programme impact: 1-3 weeks.
3. WPS missing for the actual joint geometry. AS/NZS 1554.1 §4 requires a WPS for each SP joint configuration. A fabricator with a standard WPS library may not have one for an unusual joint — a thick base-plate to column, a complex moment-connection geometry, or a joint requiring controlled pre-heat. The WPS gap is the procedure-qualification cost — typically $1-5k for a single new WPS through PQR testing.
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A worked NZ example: a residential portal package with primary moment connections
A residential outbuilding portal with two 14 m × 310 UB rafters bolted-and-welded to 250 SHS columns, with moment-resisting base-plate connections to engineered concrete pads.
Welding scope:
4 × moment-connection welds (beam-to-column)
4 × base-plate welds (column-to-plate)
8 × stiffener welds inside columns
Misc secondary welds (purlin cleats, brace gussets)
Category mapping under AS/NZS 1554.1 §5:
4 × moment connections — SP (primary load transfer)
4 × base-plate welds — SP (column base, primary)
8 × stiffener welds — SP (structural transfer)
Misc secondary — GP
| Compliance item | GP quote (silent) | SP actual (AS/NZS 1554.1 §5) | Variation | |---|---|---|---| | WPS development | 0 | 2-3 WPS at $1-3k each | +$3-9k | | Welder qualification check | 0 | Current ticket review + sometimes new qualification | +$0.5-2k | | §6 inspection (visual) | Light | 100% visual, qualified inspector | +$1-3k | | §6 NDT (CC3+ under NZS 5131) | 0 | MPI or UT on 10-25% of welds | +$2-6k | | Total compliance cost | baseline | +$6.5-20k | — |
The steel-fabricator quote that priced "all welding to AS/NZS 1554.1" without naming the category, the WPS, the welder-ticket verification or the inspection allowance under-priced the compliance work by $6.5-20k on a single portal package.
The 5-item checklist before accepting a structural-steel quote
Weld category named per joint on the fabrication schedule — GP vs SP per weld type, with SP welds identified explicitly.
WPS scope confirmed against actual joint geometries — existing WPS library vs new WPS development priced into the quote.
Welder qualification confirmed under AS/NZS 1554.1 §4.12 — current tickets covering position, joint type, consumable and material-thickness range for SP welds.
Inspection scope priced under §6 and NZS 5131 CC band — visual inspection on all SP welds, NDT scope per the construction-category.
NZS 5131 fabrication category named — CC1 / CC2 / CC3 / CC4 driving the inspection rigour.
Each item caught at quote-stage is a clarification. Each item missed is a compliance shortfall that surfaces at the engineer's PS3 weld-inspection stage.
FAQ — AS/NZS 1554.1 welder qualification
Q1: Are all structural-steel welds SP category under AS/NZS 1554.1? No — AS/NZS 1554.1 §5 splits welds into GP and SP. Primary structural welds (load-transferring, moment-resisting, brace, base-plate) are SP. Secondary welds (handrails, light non-structural fittings, finishing welds) can be GP. The fabricator's quote should identify the category per weld type.
Q2: What does an AS/NZS 1554.1 §4.12 welder ticket actually cover? A welder ticket typically states the welder's qualification position (1G, 2G, 3G, 4G or specific configurations), the consumable type, the joint type (butt vs fillet), and the material-thickness range. Tickets expire — typically 6-12 months — and need renewal under continuing-qualification rules.
Q3: How does NZS 5131 construction-category affect AS/NZS 1554.1 inspection? NZS 5131 sets CC1-CC4 fabrication categories. CC1 is light residential; CC4 is critical structural. The CC band drives the NDT (non-destructive testing) percentage required on SP welds — typically 0-10% MPI / UT on CC1-CC2 and 25-100% on CC3-CC4. Inspection cost scales with the CC band.
Q4: Can a fabricator develop a WPS during the project? Yes — AS/NZS 1554.1 §4 procedure-qualification can be done during the project via PQR (procedure qualification record) testing. The cost runs $1-5k per new WPS and adds 1-2 weeks to the programme. A fabricator's quote silent on existing WPS scope hides this.
Q5: What's the consequence if SP welds are installed without a qualified procedure or welder? The engineer's PS3 weld-inspection or independent §6 inspection rejects the welds. The remedy options are re-weld with qualified procedure and welder (full strip and re-do at original location), full NDT to demonstrate compliance retrospectively (often inconclusive), or sub-let to a qualified fabricator for re-work. All routes carry $5-20k cost and programme impact.
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