Fence material outside the plastic inside is iron or steel this material called
Plastic steel profiles are made of polyvinyl chloride (PVC) resin as the main raw material, plus a certain proportion of stabilizers, colorants, fillers, UV absorbers, etc., by extrusion of the profile.
Generally refers to steel profiles.
Plastic profiles are used for the production of doors and windows with PVC profiles, as early as the late 1950s has been in Germany, China began in 1983 from the beginning of the 20th century, the late 90s began universal application. Because simply use PVC profiles processing doors and windows strength is not enough, usually in the cavity to add steel to enhance the stability of doors and windows, so the profile of the steel interior made of plastic doors and windows are often called steel doors and windows. With the extensive use of steel doors and windows, PVC profiles for the production of steel doors and windows are commonly known as steel profiles.
Ordinary steel profiles will be deformed, the color is relatively monotonous, usually white, if you want to change the color will add PVC with the film, a long time the PVC film will fade.
Automotive supplies industry in the use of steel, the material requirements are relatively high, the most typical is the engine chassis protection board, has been widely used by most riders.
Plastic steel is also used in the production of tapered roller bearing cage. Plastic cage has: 1, reduce the friction and roller slip, reduce the working temperature; 2, improve safety and performance; 3, fail safe mode, not stuck.
