9字型地脚螺栓预埋件塔吊螺丝M12M14M16M18M20M24M30M36地角非标

GB27绞制螺丝8.8级铰制孔螺栓M18M20*60/70/75/80/90/100/110/120

12.9级内六角螺丝杯头半螺纹螺丝螺栓M18*30/35/40/45/50/55-260

GB5782发黑8.8级半牙半螺纹外六角螺栓六角M18*55-480 M20*65-500

10.9级细牙外六角螺丝螺栓GB5785/5786 M18*1.5*30/45/50/60-150

8.8级外六角螺丝外六方螺栓全牙GB5783 M16M18x20x25x30x40x150mm

304不锈钢内六角圆柱头螺丝M18M20M24螺栓螺钉杯头内六方10/12-80

M18M20M22外六角螺丝304不锈钢六角螺栓螺钉*30-40-50-60-200mm

10.9级细牙外六角螺丝螺栓GB5785/5786 M18*1.5*30/45/50/60-150

GB798活节螺丝活接螺丝活结鱼眼带孔螺栓吊环高强度M16M18M20M24

8.8级细丝牙外六角螺栓GB5785/86 M18*1.5*35/40/45/50/60/70-120

【M18 M20】不锈钢304双头螺栓 螺丝 螺丝杆

GB5782/5783全牙半牙8.8级镀锌高强度兰锌外六角螺栓螺丝M16M18

GB798活节螺丝活接鱼眼带孔螺栓吊环羊眼螺钉M5M14-M18M20M27M36

12.9级GB5783全牙螺栓高强度外六角工厂直销发黑全螺纹螺钉M6~M18

4.8/8.8级六角螺母高强度螺丝帽黑色螺栓帽M5M6M8M10M12M16M18M20