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Regarding the material for ammonia refrigeration pipes: 20# steel or Q245R?

2016-01-02View Original

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Hello everyone, I have a question regarding the material used for ammonia refrigeration pipes. I would like to ask: For ammonia refrigeration pipes, is it reasonable to use 20# steel for the pipes and fittings (tees, reducers, elbows), while using Q245R for pipe caps? Which standard does it comply with? Note: In what environments (pressure, temperature) are 20# steel and Q245R suitable for use respectively? I seek your advice! Thank you so much!

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