Bolts for low temperatures

2009-03-06View Original

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When we are doing design work, for valves that operate in low-temperature conditions, we usually choose bolts of type A320 L7/A194 G4. However, sometimes the valve drawings provided by the manufacturers specify bolts of type A320 L7/A194 G7; they say that this type is commonly used by the Japanese. What is the difference between these two types?

Reply #22009-05-15

These are all bolts that comply with the American ASME standards; there is no difference in material or performance.

Reply #32009-05-15

I did learn that. . It’s also low temperature here

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Bolts for low temperatures

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