电熔（弧）焊钢板卷管|electric-fusion(arc)-welded steel-plate pipe 电熔焊|Electric fusion welding (EFW) 电熔焊钢板卷管|Electric-fusion-welded steel-plate pipe ..
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EFW electric fusion welding 电熔焊
A crack is found after SR heat treatment in the vertical welding fusion line for water distribution ring pipe of a electric machinery.
某设备制造厂电机配水环管立缝在消除应力热处理后，熔合线附近出现裂纹。
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