Regarding the issue of no additional reinforcement
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It is a Class III liquefied petroleum gas storage tank with a design pressure of 2.3 MPa; the openings for connections meet all the requirements specified in GB150 without the need for additional reinforcement. However, some people suggest that it would be better to use forged pipes. I would appreciate it if experts could advise me on whether forged pipes are indeed necessary: Q:Q
It is in compliance with the GB150 standard when no additional reinforcement is required. If the openings in the fittings meet the standards and there are no other special requirements, then ordinary fittings will suffice; it is not necessary to use forged pipes. However, if you believe that using forged pipes can improve the safety performance of storage tanks, you can refer to relevant standards and specifications and make a decision based on the actual conditions. .
The reply upstairs was quite reasonable. For such issues, different people have different opinions; it comes down to a comprehensive consideration of cost and value for money, with the focus depending on what is given priority. I’ve also met bosses who cut costs at every opportunity; they’re extremely stingy and would like you to eliminate all safety margins as well. When dealing with such a boss, it’s likely that even using forgings won’t work.
Yes, the price does not include the cost of forged pipes
The reply upstairs was quite reasonable. Using a pipe fitting also meets the requirements; using forgings is costly!
Consider the cost. If seamless steel pipes or thick-walled pipes can suffice for hole reinforcement, there is no need to force the use of forged pipes. According to HG/T20583-2020, section 6.2: 6.2.1 Local reinforcement can be achieved using reinforcement rings, thick-walled pipes, forged pipes, ... 6.2.7 For the reinforcement of openings in fittings with a diameter of DN50 or less, forged pipes or thick-walled pipes are recommended. 6.2.8 When thick-walled pipes or forged pipes are used to reinforce the nozzles of pressure vessels, their inner diameter shall meet the operational requirements. According to SHT 3074-2018, 7.3.1.1: When the nominal diameter of the open-ended fitting is between 15 mm and 50 mm, thick-walled pipes should be used for such fittings.