Original message
| okanokantr
 |  "welding defect"
, posted Sat 8 Dec 11:37  
we are setting up fire fighting system. We have a main loop DN150. When we take branch for sprinker system from main loop such as DN50, we have a problem in the branch. Have can we keep branch straight. Room temp is about -5 to 6 C. How can we solve the problem?
hvac
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