other kinds of non-standard
...bolt),T型螺栓(T-bolt),方头方颈螺栓(SQSQ bolt),高强度螺栓(high strength bolt ,及各类非标准件(other kinds of non-standard) 生产标准有:DIN,ISO,JIS,ASTM,BS等(具体有DIN931,DIN933,A325,DIN603,DIN6914,DIN7990,DIN601,BS7419,BS916,BS1038,BS1769,307A...
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