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Which specification stipulates that J422 welding rod cannot be used to weld carbon steel penstock
1
0
专业蓝领30年
2020-03-30
请教下 哪个规范规定不能用J422焊条焊接碳钢压力管道的..
Does the state have the relevant standards for the construction of primary and secondary welding material warehouses
1
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wangliang
2020-03-26
请教一下,国家有没有建设焊材一级库和二级库的相关标准?就是以什么依据建设焊材库?..
Whether the fixed tubesheet heat exchanger of bellows must have expansion joint
1
0
海阔天空
2020-03-23
波纹管的固定管板换热器是否必须要有膨胀节啊
..
Electronics of Nb / t47014 ~ 47016-2011
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big yang
2020-03-16
请问哪位有NB/T47014~47016-2011的电子版,发一份给我,谢谢!..
The thickness and dimension of floating head arch cover of floating head heat exchanger must be marked on the general drawing
1
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litian
2020-03-12
我问一个问题啊 浮头式换热器 浮头拱盖厚度尺寸必须在总图上标出来吗..
What are the contents of the self declaration commitment letter of boiler renewal and the self-assessment form attached
1
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光头强
2020-03-09
锅炉换证的自我声明承诺书及要求附的自评表都什么内容?有模版吗?..
May I have a new certificate for ASME Pressure Vessel
1
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是董小姐呀
2020-03-05
请问下asme压力容器换证时是不是需要准备以前做的asme压力容器的资料?是不是若以前做的asme容器虽然取了asme证书但如果客户没有注册的,这些产品的资料换证时都不需要准备的。..
Where do these names come from
1
0
专业蓝领30年
2020-01-17
大家做体系人员任命时比如设计质控系统责任人、检验与试验质控系统责任人,这些名称是从哪里查出来的额?担心写的不对..
GB150 has legal effect on us and is a compulsory product standard for pressure vessels
1
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小鱼曾乖乖
2020-01-15
GB150在我们具有法律效应,且为强制性的压力容器产品标准。这个对不对?..
Should the tube sheet forgings of heat exchanger be grade II or III
1
0
阳光boy
2020-01-13
换热器管板锻件应该是Ⅱ级还是Ⅲ级..
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