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18 Years Factory Oil Country Tubular Goods - Low Temperature Pipe (A333 A334 Gr.6 Gr.3) – Sinoworld

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We are proud of the superior customer gratification and wide acceptance due to our persistent pursuit of top of the range both of those on merchandise and service for Stainless Steel Pipe Fittings Welded, Chimney Pipe Flange, Dairy Stainless Steel Pipe Fittings, We welcome new and outdated shoppers from all walks of lifetime to call us for long term company associations and mutual accomplishment!
18 Years Factory Oil Country Tubular Goods - 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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We insist on offering high-quality creation with superior business enterprise concept, honest revenue plus the greatest and fast service. it will bring you not only the high quality solution and huge profit, but essentially the most significant is usually to occupy the endless market for 18 Years Factory Oil Country Tubular Goods - Low Temperature Pipe (A333 A334 Gr.6 Gr.3) – Sinoworld , The product will supply to all over the world, such as: Zurich, Barbados, United States, With the first-class solutions, excellent service, fast delivery and the best price, we've won highly praise foreign customers'. Our products have been exported to Africa, the Middle East, Southeast Asia and other regions.
  • The sales manager has a good English level and skilled professional knowledge, we have a good communication. He is a warm and cheerful man, we have a pleasant cooperation and we became very good friends in private.
    5 Stars By Bernice from Congo - 2017.11.20 15:58
    We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
    5 Stars By Marcia from luzern - 2018.05.15 10:52
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