PP-J707是低氫鈉型藥皮的低合金高強(qiáng)度鋼焊條,采用直流反接,可進(jìn)行全位置焊接。焊件在必要時(shí),可采用焊前預(yù)熱和焊后回火處理措施。 適用于焊接屈服強(qiáng)度為590MPa級(jí)的低合金鋼結(jié)...
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