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Product Name |
304 buttweld elbow
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|
Size |
1/2"-24" seamless, 26"-60" welded |
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Standard |
ANSI B16.9, EN10253-4, DIN 2605, GOST 17375-2001, JIS B2313, MSS SP 75, etc. |
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Wall thickness |
SCH5S, SCH10S, SCH10, SCH40S, STD, XS, SCH80S, XXS, SCH20, SCH30, SCH40, |
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Elbow |
30° 45° 60° 90° 180°,etc |
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Radius |
LR/long radius/R=1.5D,SR/Shrot radius/R=1D, various radius: 3D,4D,5D,6D,7D, |
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End |
Bevel end/BE/buttweld |
| Surface |
Pickled,sand blasting, rolling blast,brighten,matt polished,mirror polished,vanished, |
304 buttweld elbow illustrate:
1. Made of 304 stainless steel, corrosion resistance and high temperature resistance
2. Long radius 90 degrees elbow, used to change the flowing direction
3.90 degrees welded short elbow, which is used to connect two pipes or pipelines into a certain angle. Welding connection ensures close sealing and reduced the possibility of leakage
4. Welding the tube at both ends together to form a tight seal to prevent leakage, low -carbon content to ensure better corrosion resistance, low -carbon content to ensure higher corrosion resistance capabilities
The common method of 304 buttweld elbow forming production is to push the bending process.
Push bending is a commonly used bending method for bending stainless steel pipe parts, which is mainly used for bending elbows. According to the characteristics of the process, it can be divided into hot push and cold bending.
1. Core rod heat push bending: On the dedicated push machine, under axial thrust under the axial thrust, push the pipelines while heating, so that the pipe blank has a thorough expansion and axial bending deformation, so as to use the small diameter tube tube tube The blank push into a large diameter elbow.
2. Cold bending: Use the bending device to push the tube billet on the normal hydraulic presses or crank pressure machine, press the stainless steel straight tube blank into the mold with a curved cavity at normal temperature, thereby forming a stainless steel elbow.
Cold pushing tube is suitable for stainless steel elbow with smaller curved radius. Its minimum relative bending radius is R/D ≈ 1.3, the ellipse of the elbow section is small (≤3%-5%), and the wall of the outer tube becomes thinner (≤ 9%) can be bent; the structure of the elbow push is simple, and it does not require special equipment and high productivity. However, the relative thickness T/D≥06 of stainless steel pipes is generally required. Otherwise, the pipes often lose stability due to poor rigidity, resulting in wrinkles or distortions in the inside of the elbow.
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