堕落的圣骑士在线观看完整版未删减|尖峰时刻1完整版电影在线观看|日韩中文字幕成人免费视频|日韩中文字幕组,性xxxhd,先锋影音欧美,91日本在线播放

Main Products
Products Grade: 65Mn
Specifications: φ5.5~14mm
Applied Standard:  GB/T4354
Characteristics: The product is a common spring steel with extensive applications. It mainly used to manufacture cushion spring, clockwork spring, oil pump speed adjusting spring, plunger spring, absorber spring, clutch spring and brake spring etc.
Applications: Spring steel
Use of Products: This product has characteristics of good metallurgical quality such as high purity and uniformity, good surface quality by strictly controlling surface defect and decarburization, good mechanical properties especially on elastic limit, strength limit and tensile ratio, as well as accurate shape and dimension.