人人做人人干|太久视频网站入口|自拍av网站|龙岭迷窟电影完整版在线观看,国产chinese男男gaygay免费视频,国产网址在线,荆棘电影高清完整版在线观看

Main Products
Products Grade: 1215
Specifications: φ5.5~26mm
Applied Standard:  agreement
Characteristics: The products are mainly used to produce the shafts for printer,fax machine and so on.
Applications: Free-cutting carbon steel
Use of Products: The grade 1215 is belong to free cutting steel of low carbon and high sulfur.The products have good forms in inclusions by rational controling the chemical contents and oxygen content.The products have good cutting and machining capability.