Kings Mobile Welding
The AWS D1.1 Structural Welding Code – Steel is the foundation of quality and compliance in structural welding across the United States. In April 2025, the American Welding Society (AWS) released the D1.1 / D1.1M:2025 edition — and it comes with major updates for fabricators, inspectors, and contractors alike.
At Kings Mobile Welding, we’re proud to be AWS D1.1 certified, fully insured, and OSHA 10 trained, serving contractors and construction professionals throughout Hampton Roads VA and surrounding regions.
This post explains what’s new in AWS D1.1:2025, how these changes affect your next project, and why working with certified welders like Kings Mobile Welding helps keep your operations compliant and efficient.
🧱 Major Updates in AWS D1.1:2025
1. New Prequalified Steel Grades
The 2025 edition adds A913 Grade 80 (Gr80) as a prequalified base metal — the strongest currently permitted under D1.1. This reduces the need for additional WPS qualification for many high-strength applications.
Changes also include adjustments to A913 Gr65 and Gr70 preheat categories, expanding flexibility for engineers and welders. _Source: AWS Welding Digest
2. Integration of LRFD Design Methods
Clause 4.7 introduces Load & Resistance Factor Design (LRFD) principles — aligning the code more closely with modern structural design practice. Welders and engineers must ensure designs and procedures match the chosen method (ASD vs LRFD). _Source: ANSI Blog
3. Clearer NDE & Inspection Requirements
The 2025 update refines nondestructive testing (NDE) criteria, magnetic particle (MT), and penetrant testing (PT) methods. These clarifications reduce ambiguity during inspections and align better with real-world practices.
4. Usability & Clause Reorganization
The code now features improved definitions, reorganized clauses, and clarified terminology. Many previously conflicting rules have been revised for better field interpretation and consistency. _Source: AWS.org April 2025 Release
🌉 Related Code Updates
- AWS D1.5M / D1.5:2025 (Bridge Welding Code) — Aligns with D1.1:2025 changes, especially ultrasonic inspection updates.
- AWS D1.8 / D1.8M:2025 (Seismic Supplement) — Improves clarity for welds in seismic systems (SFRS).
Together, these codes strengthen compliance for contractors working in transportation, infrastructure, and structural steel sectors.
🏗️ Why These Updates Matter for Contractors
- Less Requalification = Lower Costs – Expanded prequalified materials reduce the need for WPS/PQR testing.
- Stronger Design Options – High-strength steels like A913 Gr80 allow lighter, more efficient structures.
- Simpler Inspections – Updated NDE language streamlines compliance and documentation.
- Future-Proof Compliance – Many new projects now specifically reference AWS D1.1:2025, so staying current prevents rework and liability.
🔧 How Kings Mobile Welding Helps You Stay Compliant
We bring code-compliant, AWS-certified welding directly to your job site.
- Certified under AWS D1.1 — Structural welding for beams, joists, frames, and custom fabrication.
- Fully Mobile Setup — Our rig includes a plasma cutter, engine-driven welder, air compressor, and torch bottles — ready for any field condition.
- Comprehensive Services —
Visit our Services Hub for the full list.
🌎 Serving Hampton Roads and Beyond
We proudly serve a wide area, including Newport News, Virginia Beach, Norfolk, Chesapeake, Suffolk, and Portsmouth.
✅ Partner with an AWS D1.1 Certified Mobile Welder
With over 8 years of field experience, AWS D1.1 certification, and full insurance, Kings Mobile Welding helps construction contractors meet every specification of the new D1.1 code — safely, efficiently, and cost-effectively.
Contact us today through our Contact Page to discuss your upcoming structural project or to request a quote.