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Product Origin:China
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Description:Features: 1) Specifications: from 50 x 50 to 400 x 400 2) Thickness: 2-12mm 3) Length: 6-16m 4) Trademark: Q235, Q345, Q195 5) Form of welding line: straight sew 6) Production technics: resistance welding 7) Port of tube: without screw thread Our company has 125, 250 and 400 three square and rectangular production lines, and our annual yield is 0.3 million tons. Our steel tubes are mainly used for environmental protection equipment industry, light machine industry and large-scale architecture filed, such as bridge, gymnasium center and others.