国产 在线 一区二区三区_亚洲国产精品欧美日韩一区二区_在线观看不卡av电影_国产日韩久久免费福利网站

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.