GB國標(biāo) 栓接結(jié)構(gòu)用大六角頭螺母 B級 8和10級
(代替)
Hexagon nuts for high-strength structural bliting with large width across flats-roduct grade B-roerty classes 8 and 10
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GB國標(biāo) 栓接結(jié)構(gòu)用1型大六角螺母 B級 10級
(代替)
Hexagon nuts for structural bolting with large width across flats,style 1-roduct grade B-roerty class 10
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