潘迎紫武则天 ?

Expansion Screw

Expansion Screwm

Expansion of the screw is generally said that metal expansion screws, expansion screws is the use of wedge-shaped gradient to promote the expansion of friction grip force to achieve a fixed effect. The screw is threaded and has a tapered en...
Products Inquiry

Description

Expansion of the screw is generally said that metal expansion screws, expansion screws is the use of wedge-shaped gradient to promote the expansion of friction grip force to achieve a fixed effect. The screw is threaded and has a tapered end. (A steel tube), iron cylinder (steel) half of a number of incisions, put them together into a hole in the wall to fight, and then lock the nut, nut pull the screw out, pull the taper iron cylinder , Iron cylinder was open, so tightly fixed to the wall, generally used for fences, awning, air conditioning, cement, bricks and other materials on the fastening. But its fixed is not very reliable, if the load has a large vibration, may occur loose, it is not recommended for the installation of ceiling fans.
? 潘迎紫武则天 一笑一码 梦幻西游灵犀之肖赚钱 新加坡六合彩 快乐时时彩预测 黑客干什么赚钱 跟计划买如何防止连挂 宰鸡鸭赚钱吗 想要赚钱怎么办手机 历史开奖大乐透 广东快乐10分是骗局吗 斗战神倒卖什么赚钱吗 一肖一码中特吗 排列五所有开奖数据 快乐10分钟广东 17500乐彩网 排列五历史100开奖结果