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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 40740-2021 |
Welding procedures qualification for overlay welding 堆焊工艺评定试验 |
China National Standards Welding procedures qualification |
 English PDF |
| GB/T 40800-2021 |
Specification and qualification of welding procedures for production welding of steel castings 铸钢件焊接工艺评定规范 |
China National Standards Welding procedures qualification |
English PDF |
| GB/T 34630.4-2017 |
Friction stir welding—Aluminium and its alloys—Part 4：Specification and qualification of welding procedures 搅拌摩擦焊 铝及铝合金 第4部分：焊接工艺规程及评定 |
China National Standards Welding procedures qualification |
English PDF |
| GB/T 19866-2005 |
Specification and qualification of welding procedures for metallic materials-General rules 焊接工艺规程及评定的一般原则 |
China National Standards Welding procedures qualification |
English PDF |
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