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LPG storage tank production process

Liquefied gas storage tank supervision and inspection

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Welding evaluation cannot cover up the whole process. For example, the thickness of the flange is 40mm, the thickness of the head is 10mm, the material is 16MnR, the heat treatment time of the weldment heat treatment is at least 1h, and the heat treatment time of the welding evaluation with a thickness of 10mm is at least 0.5h. According to JB4708 regulations, the holding time of welding evaluation should not be less than 80% of the heat treatment of weldments. 80% of 1h is 0.8h, which is greater than 0.5h. Such welding evaluation cannot cover up the weldment.

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