KnowledgeDecember 12, 2025Welding 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 [...]Read more