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| No.12955736

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Information Name: | Large-diameter straight seam steel pipe, straight seam steel pipe |
Published: | 2014-05-06 |
Validity: | 30 |
Specifications: | |
Quantity: | 100.00 |
Price Description: | |
Detailed Product Description: | Straight seam submerged arc welded steel pipes used in the industry is obvious, it is widely used because it is itself bound to have unique advantages. But as a successful business that we should fully comprehensive understanding about the product, to a reasonable analysis of the advantages and disadvantages of hot-rolled steel. Hot-rolled steel straight seam 20 # disadvantages: [1] the residual stress caused by uneven cooling of residual stress in the absence of external forces internal self-equilibrium stress, a variety of hot-rolled steel sections have this kind of residual stress in general. The larger cross-sectional size of steel, the residual stress is greater. residual stresses, although self-equilibrium, but still has some influence on the performance of the steel members under loads such as deformation of respect, stability, anti-fatigue, etc. are likely to produce adverse effects; [2] After welding, the inside of the straight pipe joints nonmetallic inclusions are pressed into the sheet, so that stratification layering # 20 in the thickness direction of the straight seam steel tension performance deteriorated significantly, and is. weld shrinkage may occur in the interlayer tear seam local strain-induced contraction often reach several times the yield point strain and strain caused much greater than the load straight seam submerged arc welded steel pipe advantage: You can destroy ingot casting organization, grain refinement of steel and eliminate defects microstructure, so that the steel dense tissue mechanical properties are improved. This improvement mainly reflected in the rolling direction, so that the 20 # straight seam steel pipe to a certain extent the body is no longer isotropic; pouring formed bubbles, cracks, and loose, can be welded at a high temperature and pressure. The above information sources www.czfggs.com Pipe Co., Ltd. Cangzhou Yichuan |
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Copyright © GuangDong ICP No. 10089450, The new pipe plant in Union Square All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility
You are the 4886 visitor
Copyright © GuangDong ICP No. 10089450, The new pipe plant in Union Square All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility