Carbon Steel Pipe Bends

Carbon steel return bends Manufacturer in India

Carbon steel or black steel is in use among many industrial applications. The pipes made up of these steels are more corrosion resistant but are less strong compared to their alloy counterparts. These are called black steel as well. Kanak Metal & Alloys is a manufacturer and supplier of carbon steel products. Our Black steel pipe bends are a type of pipe fittings. The bends are one of the commonly used of fitting types. We produce different grades, sizes, types and varieties of carbon steel bends.

Carbon Steel Pipe Bends

Carbon Steel Pipe Bends

Black steel pipe bends

Black steel pipe bends

Our Carbon Steel Welded Pipe Bend is better suited for the applications that require much welding where the Carbon Steel Pipe Elbow is readily made to fit in with pipes. The difference between the elbows and the bends is the curvature. The bends curve gradually, whereas the elbows usually make a sudden change of direction.


The dimensionally accurate Carbon Steel Pipe Bends is used in sensitive applications where the diameter of the smaller size pipes has to be accurate. Also, there are short radius bends and long radius bends depending on the application requirements. Our Black steel pipe bends are made up of high quality steel. We also manufacture the 180 degree Carbon Steel Return Bends to reverse the direction of piping. Please contact us for further details on piping and fitting products.

Black steel pipe bends Heat and Cold Treatment


Carbon steel pipe bend is suitable for machine cold bending without any heat treatment to the bend radius limits which is indicated in the following table:

  A-587 ERW A-53 Grade B Seamless A-53 Grade B ERW A-106 Grade B Seamless
Heat Treatment Normalized Hot Finished Hot Finished Hot Finished
Cold Bending 1-1/2D 3D – 6D 3D – 6D 3D – 6D
Yield Point, Min. PSI 30,000 35,000 35,000 35,000
Elong. in 2", Min. % 40 30 30 30
Tensile Strength, Min. PSI 48,000 60,000 60,000 60,000
Manganese % 0.27 – 0.63 1.20 Max. 1.20 Max. 0.27 – 1.06
Carbon % Max. 0.15 0.3 0.3 0.3
Sulpher % Max. 0.058 0.06 0.06 0.058
Aluminum % Min. 0.02 Not Specified Not Specified 0.10 Min. Silicon
Phosphorous % Max. 0.048 0.05 0.05 0.048
Grain Size Fine Grain Not Controlled Not Controlled Not Controlled
ASME B31.3 - 93
Allowable Stress Values
KIPS / Sq. In.
-20° F to 400° F
13.60 20.00 17.00 20.00

Find here Black steel pipe bends and Carbon Steel Welded Pipe Bend Radius Chart


Carbon Steel Pipe Bends Radius Chart


Carbon Steel Pipe Bends Radius Chart

Base Material of Pipe Bends & Thickness

Carbon Bend Radius
(Refer to Inner Radius)

CS Min. Bend Radius,
Includes Min. Closeness of Cutout to Bends

Cold Rolled Steel- 14 gauge bend ( 0.075" | 1.91mm ) 0.415" 0.07"
Cold Rolled Steel - 16 gauge bend ( 0.060" | 1.52 mm ) 0.33" 0.05"
Cold Rolled Steel - 18 gauge bend ( 0.048" | 1.22 mm ) 0.265" 0.05"
Cold Rolled Steel - 20 gauge bend ( 0.036" |0.91 mm ) 0.18" 0.04"
Galvanneal - 16 gauge pipe bend ( 0.064" |1.61 mm ) 0.288" 0.05"
Galvanneal - 18 gauge pipe bend ( 0.052" |1.32 mm ) 0.26" 0.05"
Galvanneal - 20 gauge pipe bend ( 0.040" |1.01 mm ) 0.2" 0.05"
Aluminum 5052-H32 - ( 0.040" | 1.02 mm ) 0.18" 0.04"
Aluminum 5052-H32 - ( 0.051" | 1.30 mm ) 0.255" 0.04"
Aluminum 5052-H32 - ( 0.064" | 1.63 mm ) 0.32" 0.04"

Carbon steel return bends Standard Specifications and Sizes


Bend Radii : 75 / 100 / 150 / 250 / 300 / 500 / 800 / 1,000 / 1,200 / 1,500 mm.

Available Radius : 2.5D, 3D Bend, 5D, 10D Bend, 22D.

O.D. : 38.0 mm - 206.0 mm.

Bending angle (θ) : 15 Degree, 30°, 45 Deg, 60°, 90 Deg, 135°, 180 Degree Elbow.

CS Bend Size : Seamless 1/2 inch to 24 inch; Welded / ERW : 2 inch to 36 inch.

Types : Welded, Seamless, ERW, Fabricated