List of Welding Standards: ASME, AWS, ISO, EN, IS, API, and BS.

9/10/2024

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Several standards are commonly used in welding to ensure the quality, safety, and reliability of welded structures across different industries. Here are some of the key welding standards:

  1. American Welding Society (AWS) Standards

  • AWS D1.1 - Structural Welding Code – Steel;

  • AWS D1.2 - Structural Welding Code – Aluminum;

  • AWS D1.3 -Structural Welding Code – Sheet Steel;

  • AWS D1.4 - Structural Welding Code – Reinforcing Steel;

  • AWS D1.5 - Bridge Welding Code;

  • AWS D1.6 - Structural Welding Code – Stainless Steel;

  • AWS D15.1 - Railroad Welding Specification for Cars and Locomotives;

  • AWS A2.4 – Standard Symbols for Welding, Brazing, and Nondestructive Examination;

  • AWS A3.0 – Standard Welding Terms and Definitions;

  • AWS B2.1 – Specification for Welding Procedure and Performance Qualification;

  • AWS A3.0 – Standard Welding Terms and Definitions;

  • AWS C1.1 – Recommended Practices for Resistance Welding;

  • AWS A5.X - Filler Metals Specifications;

  • AWS QC1 – Standard for AWS Certification of Welding Inspectors.

  1. American Society of Mechanical Engineers (ASME) Standards.

  • ASME Section IX- Welding and Brazing Qualifications (related to Boiler and Pressure Vessels);

  • ASME B31.1- Power Piping;

  • ASME B31.3- Process Piping;

  • ASME B31.4 – Pipeline Transportation Systems for Liquids and Slurries;

  • ASME B31.8 – Gas Transmission and Distribution Piping Systems

  • ASME B16.34 - Valves - Flanged, Threaded, and Welding End;

  • ASME III - Nuclear Facility Components;

  • ASME V - Non-Destructive Examination (NDE);

  • ASME VI - Recommended Rules for the Care and Operation of Heating Boilers;

  • ASME VIII- Pressure Vessels, which involves welding specifications;

  • ASME PCC-2 - Repair of Pressure Equipment and Piping.

  1. International Organization for Standardization (ISO) Standards.

  • ISO 3834- Quality Requirements for Fusion Welding of Metallic Materials;

  • ISO 9606-1- Qualification Testing of Welders – Fusion Welding;

  • ISO 15614- Specification and Qualification of Welding Procedures;

  • ISO 14731- Welding Coordination – Tasks and Responsibilities;

  • ISO 2553 - Welding and Allied Processes – Symbolic Representation on Drawings;

  • ISO 13920 - Welding – General Tolerances for Welded Constructions;

  • ISO 17637 - Non-Destructive Testing of Welds – Visual Testing of Fusion-Welded Joints;

  • ISO 17640 – Non-Destructive Testing of Welds — Ultrasonic Testing Techniques;

  • ISO 5173 – Destructive Tests on Welds in Metallic Materials — Bend Tests;

  • ISO 5817 – Welding — Fusion-Welded Joints in Steel, Nickel, Titanium, and their Alloys — Quality Levels for Imperfections;

  • ISO 13916 – Welding — Guidance on the Measurement of Preheating Temperature, Inter-pass Temperature, and Post-Weld Heat Treatment Temperature;

  1. European Standards (EN) Standards.

  • EN 287-1 – Qualification Test of Welders — Fusion Welding of Steels (Replaced by EN ISO 9606-1)

  • EN 15614-1 – Specification and Qualification of Welding Procedures for Metallic Materials — Welding Procedure Test;

  • EN 1090- Execution of Steel Structures and Aluminum Structures (focus on welding requirements);

  • EN ISO 5817- Welding – Fusion Welded Joints in Steel, Nickel, Titanium – Quality Levels;

  • EN 15085- Railway Applications – Welding of Railway Vehicles and Components;

  • EN 1011-1 – Welding — Recommendations for Welding of Metallic Materials — General Guidance for Arc Welding;

  • EN 1011-2 – Welding — Recommendations for Welding of Metallic Materials — Arc Welding of Ferritic Steels;

  • EN 15085 – Railway Applications — Welding of Railway Vehicles and Components;

  • EN 14731 – Welding Coordination — Tasks and Responsibilities;

  • EN 13445-4 – Unfired Pressure Vessels — Fabrication;

  • EN 5817 – Welding — Fusion-Welded Joints in Steel, Nickel, Titanium, and their Alloys — Quality Levels for Imperfections;

  • EN 1418 – Welding Personnel — Approval Testing of Welding Operators for Fusion Welding and Resistance Weld Setters for Fully Mechanized and Automatic Welding of Metallic Materials;

  1. British Standards (BS) Standards.

  • BS EN ISO 1561 - Welding Procedure Qualification;

  • BS 499-1 – Welding Terms and Symbols — Glossary for Welding, Brazing, and Thermal Cutting;

  • BS 4872-1 – Approval Testing of Welders for Fusion Welding — Part 1: Steels;

  • BS 4872-2 – Approval Testing of Welders for Fusion Welding — Part 2: Aluminium and Aluminium Alloys;

  • BS EN 287-1 – Qualification Test of Welders — Fusion Welding of Steels (Replaced by BS EN ISO 9606-1);

  • BS EN 1011-1 – Welding — Recommendations for Welding of Metallic Materials — General Guidance for Arc Welding;

  • BS EN 1011-2 – Welding — Recommendations for Welding of Metallic Materials — Arc Welding of Ferritic Steels;

  • BS EN ISO 15614-1 – Specification and Qualification of Welding Procedures for Metallic Materials — Welding Procedure Test;

  • BS EN ISO 5817 – Welding — Fusion-Welded Joints in Steel, Nickel, Titanium, and their Alloys — Quality Levels for Imperfections;

  • BS 499-2C – Welding Terms and Symbols — Welding Positions;

  • BS EN ISO 14731 – Welding Coordination — Tasks and Responsibilities;

  1. American Petroleum Institute (API) Standards.

  • API 1104 – Welding of Pipelines and Related Facilities;

  • API 577 – Welding Inspection and Metallurgy;

  • API 620 – Design and Construction of Large, Welded, Low-Pressure Storage Tanks;

  • API 650 – Welded Tanks for Oil Storage;

  • API 936 – Refractory Installation Quality Control — Inspection and Testing of Refractory Brick and Monolithic Linings;

  • API RP 582 – Welding Guidelines for the Chemical, Oil, and Gas Industries;

  • API RP 1107 – Pipeline Maintenance Welding Practices;

  • API RP 934-A – Materials and Fabrication of Thick-Wall Pressure Vessels for High-Pressure Hydrogen Service;

  • API 5L – Specification for Line Pipe (Includes welding requirements for pipes);

  • API 653 – Tank Inspection, Repair, Alteration, and Reconstruction (Covers welding repairs in storage tanks).

  1. Indian Standards (IS) Standards.

  • IS 9595 – Metal Arc Welding of Carbon and Carbon Manganese Steels – Code of Practice;

  • IS 7307-1 – Approval Tests for Welders – Fusion Welding – Part 1: Steels;

  • IS 7310-1 – Approval Tests for Welding Procedures – Part 1: Fusion Welding of Steel;

  • IS 817 – Code of Practice for Training and Testing of Metal Arc Welders;

  • IS 3613 – Acceptance Tests for Wire Flux Combinations for Submerged Arc Welding;

  • IS 1323 – Code of Practice for Oxy-Acetylene Welding for Structural Work in Steel;

  • IS 5289 – Approval Tests for Welders for Fusion Welding of Aluminium and its Alloys;

  • IS 5851 – Metal Arc Welding of Stainless and Heat-Resisting Steels – Recommendations;

  • IS 7651 – Code of Practice for Metal Arc Welding of Copper and Copper Alloys;

  • IS 11802 – Recommended Practice for Resistance Spot Welding of Uncoated and Coated Low Carbon Steel Sheets;

These standards help maintain consistency in welding practices across industries such as construction, oil and gas, power generation, shipbuilding, and aerospace. The choice of standard depends on the industry and project requirements.