1.According to the different Shape purpose can be divided into: groove type elbow, bend, double of cutting sleeve type elbow, flange, elbow, reducing elbow, stay inside and outside bend, teeth Angle, stamping elbow, elbow push system, socket bend, wire butt welding elbow, elbow, etc.
2.According to its radius of curvature points: they can be divided into long radius elbow and short radius elbow.
Long radius elbow refers to its radius of curvature is equal to 1.5 times the outer diameter of tube, R = 1.5 D;
Short radius elbow refers to its radius of curvature is equal to the pipe diameter, R = 1.0 D. To bend diameter (D, R for the radius of curvature).
Due to the bend with good comprehensive performance, steel elbows are widely used in chemical industry, building, water supply, water drainage, oil, light and heavy industry, refrigeration, sanitary, plumbing, fire protection, electric power, aerospace, shipbuilding and other infrastructure.
Materials
Carbon steel: ASTM/ASME A234 WPB\WPC
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low-temperature steel:ASTM/ASME A402 WPL 3-WPL 6
High performance: ASTM/ASME A860 WPHY 42-46-52-60-65-70
