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Flange joints and groove size shall comply with GB/T 9124 - 2000 annex B (informative) regulations.
法兰的焊接接头型式和坡口尺寸应符合GB/T 9124—2000附录B（提示的附录）的规定。
youdao
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Flange joints and groove size shall comply with GB/T 9124 - 2000 annex B (informative) regulations.
法兰的焊接接头型式和坡口尺寸应符合GB/T 9124—2000附录B（提示的附录）的规定。
youdao