It means the bending radius of elbow is 1.0 time to the diameter of the elbow.Because of the short bending radius, the elbow length is shorter, the cost and price is lower.Commonly the SR elbows degree is 90° elbow and 180° elbow.Also because of this feature,the short radius elbows are used in the tight place in a project.
Standard: ASME/ANSI B16.28, MSS-SP-75, DIN 2605, EN 10253-2 , JIS B2311
Material: ASTM A234, ASTM 403,DIN 17175, EN10228 …Carbon steel, stainless steel , alloy steel.
Size: 1/2″-96″. DN15-DN2400
Connect method: Butt welding.