国产一级精品成人久久av无码免费,日韩在线看片中文字幕不卡,中文字幕在线激情日韩一区,日韩欧美成人免费中文字幕,国产精品一区二区免费看,日韩欧美一区二区三区在线视频,中文字幕在线免费视频,中文字幕精品视频在线观看,国产日韩不卡免费精品视频,日韩中文字幕电影在线观看,91精品乱码一区二区三区熟女精品,亚洲欧洲在线观看精品,日韩中文字幕福利电影

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.