超碰蜜桃|www.国产在线|北野未奈在线播放8mav|日b大片,日本aⅴ视频,99精品久久久久久久免费看蜜月,黄色专区

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.