High-strength pipeline steel and large diameter line pipes are often used to increase the capacity of transportation and......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

天然气管线的敷设地域正在向遥远地区和环境状况严峻的地区扩展,这就要求管线钢管的材料必须具有高强度和适应环境要求的各种性能,......

With the increase in energy demand,the demand for oil and gas transmission pipes,particularly high-grade longitudinal su......