prime welded carbon steel tube for construction 1.steel grade: Q195-Q345 2 ... 14mm 4.Length:3m-12m prime welded carbon steel tube for construction1.steel grade of steel tube: Q195 ... steel tube:3m-12mThese pipes are wldely used for fluid pipe,structure pipe, water pipe etcProduct ... T,Usage industryConstruction Foundation Piles,Steel Structure Building,For Low-Pressur Fluid service,Steel Structure Bridges ...