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Stainless steel 304 national standard elbow
SPECIFICATIONS
The long radius elbow of stainless steel 304 national standard elbow has a long radius. Generally speaking, the medium flow resistance of short radius elbow is large, and the resistance of long radius elbow is small. The main difference between stainless steel elbows and carbon steel elbows is the difference in material. The chemical composition contained in the elbow will keep the surface of the elbow from rust and corrosion for a long time.
The commonly used elbow of stainless steel 304 national standard elbow is the long radius series, and the bending radius of the middle diameter is 1.5 times the nominal diameter (38mm when the nominal diameter is less than 25).
The forming process of stainless steel 304 national standard elbow adopts a special elbow pusher, core mold and heating device, so that the blank sleeved on the mold moves forward under the push of the pusher, and is heated, expanded and bent during the movement. The forming process.
Stainless steel 304 national standard elbows are classified according to the radius of curvature: they can be divided into long radius elbows and short radius alloy elbows. Long-radius alloy elbow refers to the outside diameter of the tube whose radius of curvature is equal to 1.5 times, that is, R=1.5D. Short-radius alloy elbow means that its radius of curvature is equal to the outer diameter of the pipe, that is, R=1.0D. (D is the diameter of the alloy elbow, R is the radius of curvature).
Attention should be paid to the use of stainless steel 304 national standard elbow, because considering its safety and service life, it is best to improve the toughness, impact resistance, and wear resistance of the pipeline lining to make the alloy bend In the electric power, mining, metallurgy and other industries, the transportation and output of materials can withstand considerable pressure in the short-distance, high-pressure transportation.
The stainless steel 304 national standard elbow adopts the cold extrusion process of inner and outer molds. The elbow has beautiful appearance, uniform wall thickness and small dimensional deviation. Therefore, this process is often used for the forming of stainless steel elbows, especially thin-walled stainless steel elbows. The precision requirements of the inner and outer molds used in this process are high; the requirements for the wall thickness deviation of the tube blank are also strict.