国产午夜一级,欧美三级午夜理伦三级在线观看,国产精品另类激情久久久免费,一级毛片免费高清,99精品黄色,日韩超级大片免费看国产国产播放器,亚洲精品日韩一区二区电影

Main Products
Products Grade: Y1Cr17,430F
Specifications: φ5.5-38mm
Applied Standard:  Agreement
Characteristics: Shaft products
Applications: free-cutting stainless steel
Use of Products: Steel to improve the machinability of 1Cr17/0Cr17.