隐形防护网专用膨胀镙丝，管壁加长加厚，中间镙杆突出更短方便施工，6X60规格常用于墙体结实批荡不厚的工地施工。

The expansion screw for the invisible protective net is used for the construction, the pipe wall is lengthened and thickened, the middle screw rod is protruded and shorter for the construction, and the 6x60 specification is commonly used for the construction of the site where the wall is solid and not thick.