国产午夜一级,欧美三级午夜理伦三级在线观看,国产精品另类激情久久久免费,一级毛片免费高清,99精品黄色,日韩超级大片免费看国产国产播放器,亚洲精品日韩一区二区电影

Main Products
Products Grade: Cq15,QST32-3、Q20CrH-B
Specifications: φ5.5-38mm
Applied Standard:  Q/XG 137,Q/XG 143
Characteristics: These product are mainly used to produce safety parts and suspension parts of automobile.
Applications: high-end parts
Use of Products: These products are mainly used to produce parts for suspensions and safeties of car. It has of uniform-chemicalcomposition, low percentage of harmful elements, high puruty, slight decarburisation, good surface quality. They also has characteristics of spheroidize anneal easily in course of heat treatment, low percentage of cracks in coldheading, tight tolerance,uniform hardness.The progeny of “the development of cold-formed steel for car” had been identified by Hebei province in 2008. The experts agrees the following:The product quality that produced with middle-small converter has achieved international advanced level. Now the products have been used in international famous cars largely.