The welders engaged in the welding shall be fully qualified and holding welding certificates from the classification society for the type of welding carried out.
从事的焊接的焊工应该有充分的资格和持有给焊接发证的船级社的证书。
Preheating shall be carried out for carbon and low alloy steel welding where required. Preheating temperature shall be kept uniform from the start to the end of welding.
在进行碳钢及低合金钢的焊接时应进行预热。预热温度在焊接开始到结束期间应保持均衡。
For safety the propane tank was filled completely with water during all welding procedures to prevent fire or explosion from propane fumes.
出于安全的丙烷罐是装满了水，完全在所有焊接程序，以防止火灾或爆炸的丙烷气体。
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