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  2. Tianjin Pipe Corporation - Wikipedia

    en.wikipedia.org/wiki/Tianjin_Pipe_Corporation

    The predecessor of Tianjin Pipe was founded on 11 December 1987 (as Chinese: 天津无缝钢管总厂; lit. 'Tianjin Stemless Steel Pipe "Head" Factory'); it was one of the project in the Eighth Five-Year Plan of China. The factory was later incorporated as a limited company, under a law that was established in 1993.

  3. ASTM A53 steel - Wikipedia

    en.wikipedia.org/wiki/ASTM_A53_steel

    Scope of ASTM A53 Standard ASTM A53 is standard specification for pipe, steel, black and hot dipped, zinc-coated, welded and seamless. This specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1⁄8 to NPS 26 [DN 6 to DN 650] (Note 1), inclusive, with nominal wall thickness (Note 2) as given in Table X2.2 ...

  4. List of steel producers - Wikipedia

    en.wikipedia.org/wiki/List_of_steel_producers

    The World Steel Association features a list from its members every year. Due to mergers, year-to-year figures for some producers are not comparable. Not all steel is the same. Some steel is more valuable than other steel, so the volume is not the same as turnover. Some of the world's leading steel producers include China Baowu Group and ...

  5. ASTM A500 - Wikipedia

    en.wikipedia.org/wiki/ASTM_A500

    ASTM A500 is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is commonly specified in the US for hollow structural sections, but the more stringent CSA G40.21 is preferred in Canada.

  6. Gerdau - Wikipedia

    en.wikipedia.org/wiki/Gerdau

    Gerdau is a leading producer of long steel in the Americas and one of the largest suppliers of special steel in the world. It is the largest recycler in Latin America and around the world it transforms, each year, millions of metric tons of scrap into steel, reinforcing its commitment to sustainable development in the regions where it operates.

  7. Cold-formed steel - Wikipedia

    en.wikipedia.org/wiki/Cold-formed_steel

    Carbon structural steel A36 36 58-80 1.61 23 A36 50 70 1.4 21 High-strength low-alloy Structural steel A242 46 67 1.46 21 Low and intermediate tensile strength carbon steel plates A283 A 24 45-60 1.88 30 B 27 50-65 1.85 28 C 30 55-75 1.83 25 D 33 60-80 1.82 23 Cold-formed welded and seamless carbon steel structural tubing in rounds and shapes A500

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