Welded elbow is a kind of steel elbow formed by hot pressing or forging. Its connection form is directly butt welding the elbow and steel pipe.
According to its curvature radius, butt welding elbow can be divided into long radius butt welding elbow and short radius butt welding elbow; according to the pressure grade, there are about 17 kinds, which are the same as American pipe standard, and the most commonly used are STD and XS; according to the angle of elbow, there are 45 degree butt welding elbow, 90 degree butt welding elbow, 180 degree butt welding elbow and other elbows with different angles; According to the material is divided into: carbon steel, alloy steel and stainless steel.
Classification of butt welded elbows:
(1) Butt welding elbow can be divided into long radius butt welding elbow and short radius butt welding elbow according to its curvature radius. The curvature radius of the long radius butt welding elbow is equal to 1.5 times of the pipe outer diameter, i.e. r = 1.5D. The curvature radius of the short radius butt welding elbow is equal to the outer diameter of the pipe, i.e. r = 1D. Where D is the diameter of butt welded elbow and R is the radius of curvature. If there is no special instruction, generally 1.5D elbow is selected.
(2) According to the pressure rating, there are about 17 kinds, which are the same as the American pipe standards: sch5s, sch10s, sch10, sch20, sch30, sch40s, STD, sch40, sch60, sch80s, XS; sch80, sch100, sch120, sch140, sch160, XXS, of which the most commonly used are STD and XS.
(3) According to the angle of elbow, there are 45 degree butt welding elbow, 90 degree butt welding elbow, 180 degree butt welding elbow and other elbows with different angles.
(4) Materials: carbon steel, alloy steel and stainless steel.
| Description |
ASTM P12 P11 P2 P91Alloy Pipe / ASTM P12 P11 P2 P91Alloy tube / Alloy Steel Pipe P12 P11 P2 P91 price |
| Standard |
ASTM JIS G3458 JIS G3462 DIN 17175 |
| Grades |
A335 P2 P12 P11 P22 P5 P9 P91;A213 T2 T12 T11 T22 T5 T9 T91;
A369 FP1 FP2 FP12 FP9 FP22 FR11;A389 FR5
13CrMo44 10CrMo910 12CrMo195 Cr5Mo 15CrMo 12Cr2Mo
STPA20 22 23 24 25;STBA20 22 24 25
|
| Size |
Outside Diameter: 6-2400mm Wall Thickness:1.0-200mm Length: 1-12m |
| Surface |
Mill,Painted,Anti-rust Coated,etc |
| Application |
Boiler Pipe,Chemical Fertilize Pipe,Oil/Gas Pipe,Fluid Pipe,Drill Pipe,
Hydraulic Pipe,Structure Pipe,etc
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Product Tags:
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A234 Wpb Lr 90d Carbon Steel Asme B16.9 Butt Welding Elbow 3 Inch Sch 40 Images
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