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Special Price for Square Pipe Steel Railing - Low Temperature Pipe (A333 A334 Gr.6 Gr.3) – Sinoworld

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To constantly improve the management system by virtue of the rule of "sincerely, good faith and quality are the base of enterprise development", we widely absorb the essence of related products internationally, and constantly develop new products to meet the demands of customers for Sch 40 Ss Pipe, Stainless Steel 304 Square Tube, Stainless Steel U Bends, Living by quality, development by credit is our eternal pursuit, We firmly believe that after your visit we will become long-term partners.
Special Price for Square Pipe Steel Railing - Low Temperature Pipe (A333 A334 Gr.6 Gr.3) – Sinoworld Detail:

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Low temperature carbon steel pipe quenching temperature in A3 + (30 ~ 50) ℃, in practice, is usually set to the upper limit. High quenching temperature heat pipe can make low speed, surface oxidation reduction, and can improve work efficiency. The workpiece is uniform austenite, will require sufficient holding time. If the actual installed furnace capacity, would need to be appropriate to extend the holding time. Otherwise, there may be insufficient hardness due to uneven heating caused by the phenomenon. However, the holding time is too long, will also appear coarse grains, oxidation and decarbonization serious ills affecting quenching quality. We believe that if installed furnace is greater than the process documents, heating holding time to be extended 1/5.

Low temperature carbon steel pipe because of low hardenability, it should adopt a large cooling rate of 10% salt solution. Workpiece into the water, should hardenability, but not chilled, if 45 # precision steel chilled in brine, it is possible cracking of the workpiece, this is because when the workpiece is cooled to about 180 ℃, the austenite rapidly converted to horse s body tissue caused by excessive stress due. Therefore, when the quenching and tempering steel quickly cooled to this temperature range, the approach should be taken to slow cooling.

As the water temperature is difficult to grasp, accountable experience in operation, when the water stops dithering artifacts, you can water cooled (eg oil cooler can be better). In addition, the workpiece into the water, appropriate action should still be in accordance with the geometry of the workpiece, as regular exercise. Stationary cooling medium plus stationary workpiece, resulting in uneven hardness, stress uneven leaving large deformation of the workpiece, and even cracking.


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continue to improve, to ensure product quality in line with market and customer standard requirements. Our company has a quality assurance system have been established for Special Price for Square Pipe Steel Railing - Low Temperature Pipe (A333 A334 Gr.6 Gr.3) – Sinoworld , The product will supply to all over the world, such as: Guinea, Sierra Leone, San Diego, Nowadays our products sell all over the domestic and abroad thanks for the regular and new customers support. We provide high quality product and competitive price, welcome the regular and new customers cooperate with us!
  • Timely delivery, strict implementation of the contract provisions of the goods, encountered special circumstances, but also actively cooperate, a trustworthy company!
    5 Stars By jari dedenroth from Switzerland - 2017.04.08 14:55
    We always believe that the details decides the company's product quality, in this respect, the company conform our requirements and the goods are meet our expectations.
    5 Stars By Judy from Qatar - 2018.12.05 13:53
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