There are many kinds of materials for handles, such as raw wood (redwood), but mainly stainless steel, zinc alloy and iron and aluminum alloy. The industrial handle materials are mainly stainless steel and zinc alloy, aluminum alloy, nylon, etc. Due to the high requirements of industrial handles in terms of performance and use environment, the requirements for materials and processing techniques are relatively strict. Only stainless steel materials have 201 stainless steel and 306 stainless steel according to different working requirements. 304 stainless steel. Of course, the performance and quality of industrial handles are much better than ordinary handles.
brass door knobs