China National Standards

China wrenching GB Standards List

  •  China "wrenching" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 16674.3-2023 Hexagonal flange bolts Small series Class A (wrenching characteristics according to Class B) {译}
    六角法兰面螺栓 小系列 A级（扳拧特性按B级）    		 China National Standards
    wrenching
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