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J422

Home BlogPosts tagged "J422"

Welding of Common Chinese Structural Steels: Q235 (GB/T 700) vs Q345 (GB/T 1591) – Complete Practical Guide with International Equivalents (ASTM, EN, JIS)

Knowledge

December 12, 2025

Welding of Common Chinese Structural Steels: Q235 (GB/T 700) vs Q345 (GB/T 1591) – Complete Practical Guide with International Equivalents (ASTM, EN, JIS)

Q235 vs Q345 welding guide: preheat, filler metals, heat input, PWHT & international equivalents [...]

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ZMDE Steel Machinery integrates R&D, manufacturing, sales, and service, with expertise in intelligent H/T beam constructural production line and machines, Industry IoT, and control systems.
Shanghai Heaedquarter: 999 Yunjuan Road, China (Shanghai) Pilot Free Trade Zone Lin-gang Special Area, Shanghai China
Shandong Base: 3888 Yinda Road, Weifang City, Shandong China
Email: export.zmde@zmdetech.com
Tel: +86 131 6226 6595 (WeChat)
+86 180 0536 5092 (Marketing WhatsApp)
+86 185 2178 3568 (Sales WhatsApp)

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Select your desired machines by Machinery Category

Cutting Machine

Assembly Machine

Welding Machine

Straightening Machine

Shot Blasting Machine

Painting Machine

J422

Welding of Common Chinese Structural Steels: Q235 (GB/T 700) vs Q345 (GB/T 1591) – Complete Practical Guide with International Equivalents (ASTM, EN, JIS)

Machinery

Fabrication Solutions

Information

More