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Bolts & nuts in valves
2

Bolts & nuts in valves

Bolts & nuts in valves

(OP)
What is the difference between B7/2H & B7M/2HM bolts/nuts. Which is better. Can we interchange.

RE: Bolts & nuts in valves

no, you can not interchange it. B7M is for sour service. and it is not ok for chloride related corrosion if it is a wetted part. check ASME and NACE codes.

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