Door And Window Protection,Large Surface Door Protector,Window Protector,Plastic Door And Window Protection Suzhou Surface Protective New Material Technology Co.,Ltd , https://www.surfaceprotective.com Figure 1 shows a product part produced by our company. The material is 20-φ40mm±0.15mm×φ35mm×3000 times T-GB/T3639-2000. The symmetry of the two ends of the keyway relative to the reference A is 0.06. Mm is the product that meets the installation requirements. In the past, both ends of the keyway were milled, with low productivity and labor intensity.
Design of fine tube punching die