Heat exchanger tube bank level issue

2017-09-23 View Original

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According to the GB/T151-2014 standard, for steel heat exchange tubes, the allowable deviation in the outer diameter of grade I tube bundles is higher than the precision requirements specified in the GB9948 and GB6479 standards for tubes that have been cold-drawn or cold-rolled. How do you handle this in your design work?

Reply #2 2017-09-23

The design shall comply with GB151 and NB/T47019

Reply #3 2017-10-31

Generally, the allowable deviation sheet is taken to the technical requirements for discussion.

Reply #4 2017-11-01

Purchase materials in accordance with NB/T47019

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Heat exchanger tube bank level issue

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