Slotted cheese head screws with shoulder GB/T830-1988开槽圆柱头轴位螺钉
Slotted raised cheese head with shoulder The prince is standing on a tall column. GB/T946-1988开槽球面圆柱头轴位螺钉这位王子矗立在一座高高的石柱上。
Slotted large cheese head screws GB/T833-1988开槽大圆柱头螺钉
The bolts making adopts cold forging and hot forging technique, the nuts adopt hot forging technique entirely, cheese head studs for stud welding adopt cold forging technique. 螺栓采用冷镦、温镦二种成型工艺,螺母全部采用温镦成型工艺,圆柱头焊钉采用冷镦成型工艺。检测手段可靠。
Cross recessed cheese head screws GB/T822-1988十字槽圆柱头螺钉