Is a manufacturing license required for 0.5mm stainless steel sheets used to manufacture bellows?

2015-09-09View Original

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Dear colleague: Is a license for manufacturing special equipment required to produce 0.5mm stainless steel coil sheets used for making bellows? What are the relevant standards I can refer to? Thank you.

Reply #22015-09-09

No requirements are specified for the material manufacturers of pressure pipeline components. . .

Reply #32015-09-09

The standards prohibit the use of stainless steel welded steel pipes as heat exchange tubes

Reply #42015-09-09

Others manufacture bellows. . . It’s not a heat exchange tube

Reply #52015-09-09

Please refer to JB/T6169-1992 \"Metal Bellows\"

Reply #62015-09-17

The material used for the type of bellows you mentioned does not require certification

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Is a manufacturing license required for 0.5mm stainless steel sheets used to manufacture bellows?

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