Introduction to expansion pipe

Expansion pipe in the first place, the same name of the expansion pipe has two objects, one is the expansion of oil pipe, another is matched with screw expansion pipe installation is also called (plastic expansion screws), here we introduce is installed with plastic expansion tubes, based on the local dialect and habits are different name, the so-called talked different dialects, so the expansion pipe, commonly known as: tube expanding, bulge, expansion of colloidal particles, wall plug, plastic anchor, etc. Expansion pipe has before it should be said is that expansion screws, evolved from a cork base to plastic material expansion plug, after the test of time and environment, ring expansion pipe of the performance is much better than the cork, first to reduce the extent of cold expansion, also better than wood on anti-aging effect of many, and in force, and form a complete set of convenient, standard size. In the requirement of insulation and contact with water (moisture) and other special environment can be a long time to play the maximum tightening force. The purpose of expansion tube: it is used for fastening the connection and installation of all kinds of small and medium-sized pendants. Can be used indoors or outdoors. Avoid lifting heavy objects, heavy equipment and objects, so as to avoid unnecessary losses. Need self tapping screw expansion pipe matching: general use any head type, such as: countersunk head tapping screws, round head self tapping screw, large flat head self-tapping screws, outside hexagon socket head self tapping screw, double-headed screw, etc., (peripheral accessories: gasket, screw cap, aprons, hook, etc.) to avoid using fast teeth sharp (compare wood screw) in order to avoid screw screw screw cut when forced into the expansion pipe body. It is recommended to install and use hard tapping screws to give full play to the best friction force and achieve the best fastening effect. Compulsory expansion tube is composed of soft plastic HDPE (polyethylene (PE), which is a thermoplastic resin prepared by polymerization of ethylene. Industrially, it also includes copolymers of ethylene with small amounts of -olefin.