免费在线看黄网址|av不卡免费看|日韩一二三四五区|国产日韩在线不卡,亚洲午夜激情网,国产自一区,啊啊啊国产

Main Products
Products Grade: 35Si2Cr,45Si2Cr
Specifications: Φ10-17 mm
Applied Standard:  agreement
Characteristics: This product has characteristics of reasonable chemical composition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality, consistent mechanical property, fine grain size, good hardenability, and fitness of strength and toughness etc.
Applications: Railway pilow wirePC steelbar steel
Use of Products: This product is mostly used to produce PC bar and wires for high speed railroad crosstie with good straightness, high strength and toughness, low relaxation and good hydrogen-brittleness resistance.