TuKai
We use welded type for container connection. Is it necessary to take photos on site..
是董小姐呀
What does manhole IB (a-ny400) 600 mean in brackets..
big yang
The inner diameter of the tower is 1800, the height of the tower is 41m, the calculated pr..
专业蓝领30年
How is the mass of the liquid and the mass of the gas calculated
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小鱼曾乖乖
When the thickness difference between the cylinder and the modified long neck flange is la..
阳光boy
Can carbon dioxide shielded welding be used for head panel..
wangliang
How much is the m36x450 stud 35CrMoA..
海阔天空
Q345R open plate for vessel re inspection..
光头强
At present, the toxicity of benzene is extremely dangerous according to Hg / t20660-2017, ..
litian
Nitrogen filling pressure requirements after pressure test, which standard is specified..