日本不卡高清视频v中文字幕观看互动交流_手机在线看片欧美日韩_日韩激情一级无码毛片_国产真实尾随入室迷晕丝袜美女_久久天天躁狠狠躁夜夜免费观看

Main Products
Products Grade: P245
Specifications: φ18~32mm
Applied Standard:  agreement
Characteristics: P245 is used to produce big size PC Bar,which can be applied in highway and railway bridge、mine support and Dam construction.
Applications: Prestressed steelPC steelbar steel
Use of Products: This product has characteristics of reasonable chemical composition, high hardenability, good strength and toughness, good surface quality.