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3/4in-600lb承插法蘭和帶頸對(duì)焊法蘭,,焊接后探傷---[請(qǐng)教] |
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Re: 3/4in-600lb承插法蘭和帶頸對(duì)焊法蘭,,焊接后探傷---[請(qǐng)教]
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