婷婷五月伊人,亚洲国产精品免费,日韩午夜福利在线观看,一区二区午夜按摩,久久精品国产免费,国产免费a级片全部,成人黄片在线播放

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.