In the case of welded tube and pipe, test heads can be provided for manual or automated weld following.
碰到焊接管材时，这些探头可手动焊接或者自动焊接。
Requirements for site welded circumferential seams shall be agreed on a case by case basis prior to order.
现场环缝焊接要求在签订订单之前，具体要求具体的商定。看看怎么样？
In case of fire, the meltdown first occurs in metal welded at low melting points and the decorative slice drops off.
当火灾发生时，装饰片与支架之间的低熔点焊接金属首先熔化，装饰片脱落。
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