For stainless steel pipes using carbon steel supports, is it necessary to add rubber in between? Is there a standard basis?
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For stainless steel pipes using carbon steel supports, is it necessary to add rubber in between? Is there a standard basis?
The acceptance specifications clearly state that stainless steel and carbon steel should not come into direct contact
In a humid environment, a galvanic cell reaction occurs between carbon steel and stainless steel, causing the carbon steel to corrode. .
We have direct butt welding of carbon steel pipes and stainless steel pipes.
When welding carbon steel and stainless steel, the rust-resistant properties of the stainless steel are compromised by the carbon steel; it seems that welding is possible in cases where high requirements are not imposed. . . When carbon steel comes into contact with stainless steel, a method similar to cathodic protection can be used. .
The medium should be acidic underground natural gas. The signature has been changed!
Found this post on Haichuan. http://bbs.hcbbs.com/thread-551453-1-1.html Facts show that carbon steel and stainless steel can be welded directly, as long as the right welding electrode is used. . (Because I’m not crazy anymore – it’s time to work hard; P)
Because of previous precedents, we now have a support made of stainless steel while the carbon steel one is required, but the owner refuses to go along with it. The stainless steel pipe must come into contact with the stainless steel plate, and then the stainless steel plate is welded to the carbon steel. (Keep going! Only a madman can achieve greatness. ）
It is of course better to have the stainless steel pipe in contact with the stainless steel plate, and then weld the stainless steel plate to carbon steel; after all, the floor is made of carbon steel, and we have projects where clients proceed in this manner as well.
It is mentioned in any pipeline construction standard; it doesn’t have to be rubber – other non-metallic gaskets can also be used. This is basic common sense regarding installation