精品国产一区二区三区在线观看,中文字幕在线观看不卡视频,超碰97在线播放,手机看片福利久久,成人精品毛片va一区二区三区,欧美伊人久久,国产伦精品一区二区三区视频孕妇

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.