Where backing welds are radiographed for their full length to meet code requirements before clad side high alloy welding is done, this requirement may be omitted with prior approval of the Purchaser.
在复合侧高合金焊接之前，如果要对打底焊道在全长上进行射线检测，则事先经买方同意后可忽略此项要求。
Where backing welds are radiographed for their full length to meet code requirements before clad side high alloy welding is done, this requirement may be omitted with prior approval of the Purchaser.
在复合侧高合金焊接之前，如果要对打底焊道在全长上进行射线检测，则事先经买方同意后可忽略此项要求。
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