The weld size was controlled according to the definition of leg on the corner joint and DL/T869—2004 (power plant welding technical regulation), which led to the effective thickness was insufficient.
按目前大多数人认可的角接接头焊脚的定义，根据DL/T869—2004《火力发电厂焊接技术规程》去控制焊接尺寸，会出现焊缝有效厚度不足的问题。
High welding precision, good welding corner appearance.
焊接成型尺寸精度高，焊角外观好。
Parallel welding makes profile-clamps synchronously and symmetrically feeding forward; high corner strength.
采用平行焊接技术，实现每个机头两块压钳同步对称进给，焊接角强度更高；
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