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WN与LWN法兰的区别是什么？在asme标准 …
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WN与LWN法兰的区别是什么？在asme标准 …
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http://bbs.hcbbs.com/thread-932636-1-1.html
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Other Energy Products
在asme标准中，小于等于2英寸的法兰一般要用LWN，而大的法兰可以用WN法兰。请问相对于WN法兰，LWN法兰的特点是什么？焊接更容易还是连接更牢固？
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