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Categories of BW elbow
The butt welding elbow can be divided into long radius butt welding elbow and short radius butt welding elbow according to its radius of curvature. The radius of curvature of the long radius butt welding elbow is equal to 1.5 times the outer diameter of the pipe, ie R=1.5D. The radius of curvature of the short radius butt welding elbow is equal to the outer diameter of the pipe, ie R=1D. D in the formula is the diameter of the butt welding elbow, and R is the radius of curvature. If there is no special instruction, the 1.5D elbow is generally used.
Specifications
Size Range | 1/2″ – 80″ / DN15 – 2000 |
Thickness Schedule | SCH 10 – SCH 160, XXS |
Bending Radius | Long Radius (LR) and Short Radius (SR) |
China Standard | GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409 |
America Standard | ANSI / ASME B16.9 / MSS SP 43 |
Japan Standard | JIS B2311/2312/2313 |
Europe Standard | EN10253 |
Carbon Steel | Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC |
Low Temp Carbon Steel | Q345B, 16Mn, ASTM A420 WPL6 |
Pipeline Steel | ASTM A860 WPHY 42 / 46 / 56 / 60 / 65 |
Alloy Steel | ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92,15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5 |
Stainless Steel | ASTM A403 WP304/304L/304H, 316/316L, 310S, 317,347,904L |
Duplex Stainless Steel | ASTM A815 S32205, S31803, 32750, 32760 |
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