狠狠操2019|爱爱视频网址|欧美在线视频导航|www.xxxxx,欧美日本激情,tvb银狐电视剧粤语高清在线观看,好好生活免费观看完整版高清在线

Main Products
Products Grade: 60Si2MnA,60Si2MnA-1
Specifications: φ6.5-20mm
Applied Standard:  agreement
Characteristics: The wire rod of 60Si2Mn is used to produce spring wire, absorber spring and spring fittings of vehicle.
Applications: Railway fastenerSpring steel
Use of Products: The wire rod of 60Si2Mn, which is a high performance steel grade of Si-Mn spring steel, has characteristics of uniform-chemicalcomposition, low gas content and harmful elements, high purity, high elasticity attenuation resistance, slight decarburisation, good drawability. Main composition of microstructure is sorbite. The product has good mechanical and fatigue properties after quench and temper.