Chinese Standard: GB/T 9124.2-2019

Steel pipe flanges—Part 2:Class designated

GB/T 9124的本部分规定了Class系列钢制管法兰和法兰盖的类型与参数、型式与尺寸、技术要求、试验、检验与验收、标志与标记、供货要求。
<br/> 本部分适用于公称压力Class150～Class2500、公称尺寸DN15～DN600(NPS1/2～NPS24)的钢制管法兰和法兰盖。

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