8.8级发黑双头螺丝双头螺栓GB901双头螺柱M8M10M12M14高强度螺杆

GB901双头等长螺栓B型 螺柱 连接螺丝M6M8M10M12M14M16M18M20-M30

镀锌丝杆双头全螺纹全牙螺杆吊顶通丝螺柱短牙条加长牙棒6螺栓8mm

镀锌双头螺丝螺柱4.8级国标双头螺杆GB901等长双头螺栓M8M10M12

8.8级GB901发黑双头螺丝双头螺栓双头螺柱加长螺杆M8M10M12M16M30

8.8级GB901双头螺丝双头螺栓等长/螺柱M12M16M20M24*50*60*200*90

4.8级发黑双头螺丝 螺栓螺柱丝杆牙棒螺杆压板螺丝M8M10M12M14M16

8.8级GB901双头螺栓螺母垫片套装螺柱螺丝杆套装M12M14M16M24-M36

4.8级镀锌双头螺丝等长双头螺栓无头螺杆GB901-B型双头螺柱M14M16

8.8/12.9级双头螺柱 通丝牙棒 达克罗防腐耐高温螺栓M10M12M14M16

GB 901-1988 等长双头螺柱 B级 英文版 人工翻译 译文译本标准

2507双头丝杆双相不锈钢钢耐腐蚀牙条螺柱M6M8M10M12M14M16M20

304GB897不锈钢不等长双头螺栓双头螺柱双头螺丝国标6M8M10M12-14

2507双头丝杆双相不锈钢钢耐腐蚀牙条螺柱M6M8M10M12M14M16M20

M5双通六角铜柱 双头隔离柱螺母柱空心机箱主板电脑螺柱 铜柱螺丝

M6双通六角铜柱 双头隔离柱螺母柱空心机箱主板电脑螺柱 铜柱螺丝

4.8级镀锌双头螺栓国标两头牙螺丝螺柱/螺丝杆M14M16M18*60-250mm

两头螺丝双头螺柱8.8级高强度镀锌双头螺栓套装两头牙螺杆M10-M3

M6M8M10M12镀锌4.8级全牙螺丝 双头螺柱 丝杆 牙棒25 40 50-80

8级双头螺丝 双头螺栓 连接螺丝 双头螺杆 等长双头螺柱M20

M6M8M10 304不锈钢双头螺栓GB901螺柱 螺丝螺杆201丝杆牙棒30-150

20634通丝双头牙条丝杆M20M22M24M27全丝牙螺柱12.9级全螺纹牙棒

22M24M27M30M33M36高强发黑8.8级双头螺丝 螺栓连接螺杆等长螺柱

8.8级GB901双头螺栓螺母垫片套装螺柱螺杆丝杆M8M10M12M14M16-M36