According to the different curvature radius and direction of the elbow, large-diameter elbows can be classified into various types. Common large-diameter elbows include long radius elbows, short radius elbows, equal radius elbows, and reducers. These different types of elbows can be used to connect different parts of the pipeline, achieving the purpose of changing the direction and bending of the pipeline. Large diameter elbows are widely used in various fields, including chemical, power, metallurgy, construction, petrochemicals, aviation, aerospace, etc. They are suitable for the transportation, steering, distribution, mixing, control, and compression of liquids and gases in engineering.
Precautions for using large-diameter bent pipes:1. When producing large-diameter bend pipes, the material is subjected to tension on the outer side, while the position of the neutral axis under compression on the inner side is different from the bending method. In the top bending (compression bending) operation, the neutral axis is about one-third away from the outer wall, while in the rotary bending (return bending) operation, the neutral axis is about two-thirds away from the outer wall. Therefore, the use of rotary bending method is beneficial for thin-walled pipeline bending.
2. The bending accuracy of large-diameter bent pipes is also one of the factors affecting the quality of bent pipes. When manufacturing bent tires, in addition to controlling the specifications and dimensions within the tolerance range, we also require users to choose the corresponding bent tire based on the bent pipe diameter during use.
3. When a large-diameter bent pipe is bent, the outer arm wall of the intermediate layer of the pipe is thinned under tensile stress under the action of external force distance M, while the inner side is subjected to compressive stress. The combined force of N1 and N2 causes a change in the cross-section of the pipe, resulting in thickening. Based on this factor, the main reasons for the decrease in the quality of bent pipes are RX and SX. Therefore, GBJ235-82 has made clear provisions for the RX values and the thinning amount on the outside under various pressure levels, in order to control the values of RX and SX and improve quality.
Company strength
Tianjin Nova Energy Tech Ltd is a technology manufacturing enterprise dedicated to providing users with one-stop high-quality metal products, precision mechanical parts processing, and drilling and exploration tools. Tianjin Nova Energy Tech Ltd is located in Jinghai, Tianjin, a deep processing base for metal products and tools, adjacent to Tianjin Port and Beijing Daxing International Airport, with obvious geographical advantages. At present, a product series of over 100 varieties and tens of thousands of specifications has been formed, including special steel, metal pipe fittings, steel pipes, round steel, metal wire rope products, wire rods, transportation equipment, photovoltaic equipment and brackets, wind power components, drilling and exploration tools, etc. The factory has various types of precision machining equipment: CNC gantry machining centers, CNC lathes, precision milling machines, wire cutting machines, precision grinding machines, tapping machines, deep hole drilling machines, deep hole three coordinate machines, etc. With advanced equipment and professional engineering and technical personnel, we provide customers with one-stop services from raw material screening, rough processing, precision processing, special surface coating treatment, to accessory assembly.
Buyer Reading
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