av免费不卡在线观看网址,黄色视频大全ww,h在线观看网站,亚洲视频在线免费观看,男人天堂视频在线播放,日本女同羞羞视频,jk美女隐私视频网站

Main Products
Products Grade: 30Si,35Si,30MnSi,30MnSiB
Specifications: φ5.5~16mm
Applied Standard:  Q/XG 02
Characteristics: This kind of products is mostly used to produce PC bars for tubular piles with delayed-fracture resistance, good straightness, high strength and toughness, low relaxation, good heading quality and weldability to satisfy the customers’ needs.
Applications: PC steelbar steel
Use of Products: This kind of products has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality, consistent mechanical property, fine grain size etc.