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• Hot rolled steel plate is different from cold rolled steel plate

  2022 / 11 / 07

  The hot rolled sheet has low hardness, easy processing and good ductility. The cold rolled sheet has high hardness and is relatively difficult to process, but is not easily deformed and has high strength. Hot-rolled sheet has relatively low strength, poor surface quality (low oxidation/smoothness), but good plasticity, generally medium-thick plate, cold-rolled plate: high strength, high hardness, high surface finish, generally thin plate, can be used as stamping With the board. Hot-rolled steel sheet, mechanical properties are far less than cold processing, second only to forging, but with good toughness and ductility Cold-rolled steel sheet has a certain degree of work hardening, low toughness, but can achieve a good yield ratio, used for cold-bending spring pieces and other parts, and because the yield point is closer to the tensile strength, there is no danger during use. Predictability, prone to accidents when the load exceeds the allowable load Supplement, cold rolled steel plate 0.3-3.0mm, hot rolled steel plate 2.0

• What is a precision seamless steel pipe? What is the difference between precision steel pipe and seamless steel pipe?

  2022 / 10 / 28

  Precision seamless steel pipe is a kind of high-precision steel pipe after cold drawing or hot rolling. Because the precision seamless steel pipe inner and outer wall without oxide layer precision seamless steel pipe, withstand high pressure and no leakage, high precision, high finish, cold bending deformation, flaring, flattening and no cracks, it is mainly used to produce pneumatic or hydraulic components Products such as cylinders or cylinders are made of seamless tubes. The chemical composition of precision seamless steel tubes is carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, and chromium Cr. The difference between precision steel pipe and seamless steel pipe 1. The main feature of seamless steel pipe is that it has no welding seam and can withstand greater pressure. The product can be very rough cast or cold dial. 2. Precise steel pipe is a product that has emerged in recent years. It mainly has strict tolerances and roughness on the inner hole and outer wall dimensions. Precision seamless steel pipe features 1. Smaller outside diameter. 2. High precision can be done in small batch production. 3. High-precision cold drawn products, good surface quality. 4. The transverse area of the steel tube is more complicated. 5. The steel pipe has better performance and the metal is denser. Th

• Alloy seamless steel pipe than seamless steel pipe performance is much higher

  2022 / 07 / 07

  Alloy seamless steel pipe is a seamless steel pipe, its performance is much higher than the average seamless steel pipe, which contains more Cr inside the steel, its high temperature, low temperature, corrosion-resistant properties of other seamless steel pipe Compared to the alloy pipe in the petroleum, chemical, power, boiler and other industries more widely used. Alloy seamless steel pipe contains elements of silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, rare earth and so on. Seamless Steel Tube A long section of steel with a hollow section and no seam around. Steel has a hollow section, a large number of pipes used to transport fluids, such as the delivery of oil, natural gas, gas, water and some solid materials such as pipes. Alloy seamless steel pipe material: 12Cr1MoV, P22 (10CrMo910) T91, P91, P9, T9, WB36, Cr5Mo (P5, STFA25, T5) 15CrMo (P11, P12, STFA22), 13CrMo44, Cr5Mo, 15CrMo, 25CrMo, 30CrMo , 40CrMo. Alloy seamless steel pipe national implementation of the standards: DIN17175-79, JISG3467-88, JISG3458-88, GB5310-2008, GB9948-2006, ASTMA335 / A335m, ASTMA213 / A213m. Alloy pipe [(OD - wall thickness) * wall thickness] * 0.02483 = kg / m (weight per meter).Above seamless steel pipe knowledge by Shandong Huitong seamless steel pipe manufacturers.