Rc和Rb的螺纹塞规有什么区别
1、表示方法不同:RB最新的标准是国标代号******************是55度密封圆锥内螺纹,国标GB/T7306.2-2000,是圆锥管螺纹标准改版。2、性质不同:英制...
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Rc和Rb的螺纹塞规有什么区别
1、牙顶不同Rb螺纹塞规的牙顶为平顶,Rc螺纹塞规为尖顶。2、检验螺纹不同RC圆锥螺纹环塞规检验圆锥管外螺纹R和圆锥管内螺纹RC用,偏差是螺纹的偏差随景求传。而Rc螺纹塞规检验螺...
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猎豹黑金刚2.2和2.4的区别是什么?
猎豹黑金刚2.2和2.4是长丰集团推出的不同排量的一款高档越野车。猎豹黑金刚2.2和2.4的区别如下:1.外观方面:猎豹黑金刚2.2和乐2.4外观上并无较大差介丝互亚帮活准稳正稳...
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