Cnc Machine are designed and manufactured by the United States, Germany and Japan. We have set up the R&D center of intelligent CNC machine tools and independently developed products. The Cnc Lathe Machine adopts China wide CNC system. The main shaft is P4 grade angular contact bearing, with 2 front and rear bearings. The main motor is equipped with 4kw motor, frequency conversion is 5.5KW Zhejiang Fuling. The guide rail is protected by stainless steel sheet metal. The machine has two models: Linear Guide Machine and Taper Roller Bearing Machine. The casting body is cast integrally. This machine mainly aims at the requirement of large-scale production of small disc precision parts in industry, and devotes itself to the manufacture of fine products of national machine tools. Our company produces Heavy cut cnc machine, Instrument cnc machine and Automatic Loading And Unloading CNC Machine. The company's products sell well both at domestic and overseas, with perfect pre-sale, in-sale, after-sale one-stop service, to ensure that each user can use reliably. Cnc Machine,Linear Guide Cnc Machinery,Linear Guide Machinery,Cnc Lathe Machinery Shaoxing Sunfong Intelligent Equipment Inc. , https://www.zjsxsunfong.com
20 # 20 steel pipe material, generally 20 seamless steel tubes
The material of 20 # steel pipe is 20 steel, generally 20 seamless steel pipe The material of 20 # steel pipe is: High quality carbon structural steel Grade: 20 Steel Standard: GB / T 699-1999 & GB / T 3639-2008 Features and application: Cold deformation High plasticity, generally for bending, calendering, bending and hammer arch processing, arc welding and welding properties of the good welding, gas welding, the thickness of small, demanding or complex shape parts of the shape of the crack. Machinability Cold drawn or normalized state is better than the annealed state, generally used to create less stressed and toughness demanding. Chemical composition: Carbon C: 0.17 ~ 0.23 Silicon Si: 0.17 ~ 0.37 Manganese Mn: 0.35 ~ 0.65 Sulfur S: ≤0.035 Phosphorus P: ≤0.035 Chromium Cr: ≤0.25 Nickel Ni: ≤0.25 Copper Cu: ≤0.25 Mechanical Properties: Anti Tensile strength σb (MPa): ≥ 410 (42) Yield strength σs (MPa): ≥ 245 (25) Elongation δ5 (%): ≥ 25 Reduction of area ψ (% ≤ 156HB, sample size: sample size 25mm Heat treatment and microstructure specifications: heat treatment norms: normalizing, 910 ℃, air-cooled. Metallography: ferrite + pearlite. Delivery Status: Non-heat treatment or heat treatment (annealing, normalizing or tempering) state delivery. Requirements of the state of heat treatment delivery should be specified in the contract, did not specify those who do not heat treatment delivery.