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                Q345Bbbin体育官网 L245bbin体育官网

                时间:2019-04-15 浏览:

                Q345Bbbin体育官网 L245bbin体育官网 Q345Cbbin体育官网 Q345Bbbin体育官网

                Q345Bbbin体育官网 L245bbin体育官网
                 

                400-1420mm壁厚6-60mm 一般用在钢结构建设上面 L245直缝钢Ψ管一般用在天然气 化工建设收上面 Q345C统称叫耐候钢一般用在比◣较冷的地方做钢结构拿出來用


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