Carbon Steel Pipe Bend

QS Steel Pipe: Putian Carbon Steel Pipe Bend

ASME B16.9 carbon steel pipe bend in long radius 1.5D, 45 to 180 degrees, 1/2 to 48 inch, for smooth direction changes in pipeline and process piping.

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One-Minute Overview

Carbon steel pipe bend for smooth direction changes in pipeline and process runs.
Long radius 1.5D with 45, 60, 90 and 180 degree angles available.
Bevelled ends for butt welding, matched to the pipe wall on the run.
Hot or cold formed, with wall thinning and ovality kept within tolerances.

A carbon steel pipe bend is a pipe fitting that turns a line without breaking the flow into a pair of sharp corners. Formed from pipe rather than fabricated from plate, the bend keeps a smooth arc, and the long radius pattern (1.5D) keeps pressure loss and erosion at the bend low. The ends are bevelled to butt weld to the matching pipe, so the fitting becomes part of the line rather than a bolted interruption. Sizes run 1/2 to 48 inch in carbon steel, with angles from 45 to 180 degrees.

Name: Carbon Steel Pipe Bend
Type: Pipe Bend, Long Radius
Size: 1/2 to 48 Inch
Wall Thickness: SCH10 to SCH160
Material: Carbon Steel
Standard: ASME B16.9
Angle: 45, 60, 90, 180 Degree
Radius: 1.5D Long Radius
End: Bevel End for Butt Welding
Size, wall thickness, angle and radius are confirmed per inquiry, and a detailed specification sheet is available on request.

Ordering a bend is mostly geometry. The angle sets the direction change, the radius sets how gently the flow turns, and the wall must match the pipe it welds to. During forming the extrados thins and the intrados thickens, so the wall after bending has to satisfy the code minimum, not just the wall before. Ovality at the bend is the other controlled figure, because it decides whether the spool slides into the line without force.

On site, handle the bend like the fitting it is: support the arc, keep the bevels clean, and align the ends before tacking so the joint does not pull the pipe out of line. Butt welds follow the same procedure as the rest of the run, with NDT where the service class demands it. For lines carrying slurry or high-velocity gas, remember that erosion follows the outer wall of the bend, which is one reason the radius and wall are specified carefully.

FAQ

Q1. Long radius or short radius, what changes in the line?

The radius changes how hard the flow turns. Long radius 1.5D gives lower pressure loss, gentler erosion and easier pigging; short radius saves space at a cost in those same three things. For transmission lines and anything that sees a pig, long radius is the usual choice.

Q2. Why does wall thinning matter when I order a bend?

Because forming stretches the outer wall. If the bend starts at the same wall as the pipe, the outside of the arc ends up thinner than the code wants. Order with the thinning allowance in mind, and check the finished wall at the extrados before the bend goes into the line.

Q3. Can I just weld two elbows together and call it a bend?

You can, and it will look like a bend to the untrained eye. A formed bend keeps one smooth arc, less pressure drop and fewer welds to inspect. Two elbows add two extra welds, a kink in the flow and something for the inspector to write about.

Q4. What payment terms do you accept for carbon steel pipe bends?

T/T, L/C at sight and other internationally accepted terms. The exact terms are agreed with you before production starts, because the payment schedule has to match the order value, the shipping method and the delivery schedule you need — which is also why we confirm them up front rather than after shipment.

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