Guide rail specification 40X40X3000MM, material sus304, with fitting lug type is used for the upper suspension for installing guide rail. Material sus304. The turning idler frame is divided into 90 degree and 180 degree, and the material is steel and sus304. The chain is a part of the production line that is regularly replaced, and the materials are sus201, sus301, manganese steel, small chains and frequently replaced parts of the production line, and the materials are sus201, sus301. The connection link material is sus304.