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["¿La tubería de alta presresión ¿permite el uso de un flange de soldadaddo plano?",,"¿¿Generalmente, ¿¿la tubería o la línea de alta presresión ¿¿permite el uso de un flange de soldadura plano? ¿A qué presión se se requiere el uso de un flange de soldadura en caliente?","Se puede consultar el artículo 3.0.0 de la sese 3 de HG/T2551 o la 3 de HG/T

2019-07-10View Original

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一般情况下,高压罐或管路允许用平焊法兰吗?多高压力必须用对焊法兰?
Reply #22019-07-10
可参见HG/T20592或HG/T20614中第3节表3.0.1中关于法兰密封面型式及其适用范围的规定,并参考《化工工艺设计手册》下册第26章配管设计P136页表26-7中关于法兰型式选用的规定
Reply #32019-07-10
高压的有板式平焊法兰吗?
Reply #42019-07-10
本帖最后由 Mr.R 于 2019-7-10 15:48 编辑 根据定义,管内介质表压力大于或等于10MPa至42MPa的管道为高压管道,而根据HG20592中管法兰类型及适用范围中的规定,板式平焊法兰最高允许使用公称压力为PN40,即4.0MPa,因此高压管道不能选用板式平焊法兰。
Reply #52019-07-10
HG/T20592就到PN40
Reply #62019-08-20
为什么这么热衷于平板法兰?
Reply #72019-08-20
如果在压力许用范围内,板式平焊法兰成本低啊

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