九一精品一区,色戒梁朝伟和汤唯无删减版在线观看未删减版,伊人中文字幕在线观看,亚洲男人在线,五月婷婷之婷婷,色戒完整版无删减在线观看,天堂成人一区二区三区

Main Products
Products Grade: SWRCH10K,SWRCH15K
Specifications: Φ5.5~Φ28mm
Applied Standard:  Q/XG114
Characteristics: The product is used to produce screw.
Applications: Common partsCommon fastenerconstruction fastener steel
Use of Products: SWRCH10K,SWRCH15K is used to produce screw. It is also can be used to produce fastener of grade 4.8 to 6.8 and non-standard parts. The product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, good surface quality, high accuracy of geometric dimensions, low rate of cracking.