Thermal expansion seamless steel pipe knowledge - 51 steel pipe network

Thermal expansion seamless steel pipe knowledge collection--51 steel pipe network to provide hot-expanded seamless steel pipe is what we often say the thermal expansion pipe, the density is relatively low but a very strong contraction of the steel pipe, (seamless steel pipe) can be referred to as thermal expansion pipe . A paddle finish rolling process in which the diameter of the pipe is enlarged by a cross-rolling or drawing method. The thickening of steel pipes in a short period of time can produce non-standard and special models of seamless pipes with low cost and high production efficiency. It is the current trend in the field of international pipe rolling.
China's current thermal expansion tube production standards:
Thermal expansion seamless steel tube: GB3087-1999
Hot expanded seam steel pipe (seamless steel pipe): GB/T3091-2000.
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Alloy steel refers to steel with high strength and good chemical stability at high temperature. It includes two types of anti oxidation steel (or high temperature resistant steel) and hot steel. Anti oxidation steel generally requires good chemical stability, but the capability is limited. High temperature strength and the corresponding oxidation resistance of heat and strong steel are required. Heat-Resistance Steel is often used in the manufacture of boiler, steam turbine, power machinery, industrial furnace and aviation, petrochemical and other industrial sectors in the work of the high temperature parts. In addition to the requirements of high temperature strength and high temperature oxidation corrosion, sufficient toughness, good shaping and welding are also required according to the different use, as well as a certain organizational stability. In addition,  some new low chromium nickel oxidation are also developed .Heat-Resistance Steel

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