China National Standards

China 1：PN GB Standards List

  •  China "1：PN" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 39245.1-2020 Grooved metal gaskets with covering layers for pipe flanges—Part 1：PN designated
    管法兰用金属齿形组合垫片 第1部分：PN 系列    		 China National Standards
    1：PN
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