🔎 What It Is:
An MS 3D Bend** is a pipe bend made of Mild Steel (MS) with a 3D radius, used to change the direction of flow in a piping system. The term “3D” indicates the centerline radius of the bend is three times the nominal diameter of the pipe, which provides a smooth flow transition with reduced pressure drop and less turbulence compared to sharp elbows.
📐 Breakdown of Term:
MS: Mild Steel – cost-effective and suitable for water, air, oil, and structural piping
3D: Bend radius is 3 times the pipe diameter (e.g., 3 × Ø100mm = 300mm bend radius)
Bend: A long-radius curved pipe fitting for directional changes
S/L-40:
S/L – Seamless or Long radius
40 – Refers to Schedule 40 pipe (wall thickness specification)
ISS: Indian Standard Specification (fitting conforms to Indian Standards, like IS 1239 / IS 3589)
Nominal Bore (NB): ½” to 24” or larger
Wall Thickness: Based on Sch 40 (Medium wall thickness)
Radius: 3D = 3 × pipe OD
Ends: Plain ends (PE) or Beveled ends (BE) for welding