Buttweld Carbon Steel Pipe Bends

Manufacturing standard: AISI B16.49, ASME B16.9/B16.49,EN 10253-2,GOST 17375
Material: Carbon steel, Alloy steel, Stainless steel
Material standards: API 5L, ASTM A234 WPB; ASTM A403 304/304L, 316/316L.
Size: 1/2″-48″, any customized size
Radius range: R=2D, 2.5D, 3D bend, 5D bend, 6D, 8D bend
Degree range: 45 degree, 60 degree, 90 degree and customized.
Wall thickness: SCH 10, SCH 40, SCH 80
Coatings: Black paint, galvanized, epoxy coated, 3PE, FBE

A steel pipe bend is a pipe used to change the direction of a pipeline. Common
use radius bend in 3D bend and 5D bend is similar to a pipe elbow, but differs
in that it is longer than an elbow and is usually manufactured for specific
needs.

So depends on the different bending radius (R) to distinguish bend and an
elbow.

In case the bending radius is more than 2 times D (diameter）, it is a pipe
bend. Like 3D bend, 5D bend, 6D pipe bend, 8D pipe bend.

In case bending radius in 1D or 1.5D, it is an elbow. (short radius elbow 1D
and long radius elbow 1.5D).

Pipe Bending Radius: 3D Bend, 5D Bend, 6D, 8D and customized

Bending Degrees: 15°, 22.5°, 30°, 45°, 60°, 90°, 180° and customized

Large Diameter Pipe Bend / Bending

Steel pipe bending usually required in large diameter in oil and gas pipelines,
since it has better capacity to transport the material, and long pipelines will
need different radius of pipe bends to be intalled in complex conditions.

Differences between Steel Pipe Bend VS Elbow
Pipe bend and elbow both for change the pipe direction, still there are a lot
of differences in below aspects:

Bending Radius

Manufacturing Processes

Different cost

Application scope

(click here to get the difference between a pipe bend and an elbow)

Elbow:
The Butt Weld Elbow can be 45 Degrees,90 Degrees and 180 Degrees

Bend:
The Bend can be 180 Degree L/R Return Bend and 180 Degree S/R Return Bend

Buttweld Pipe Bend Key Characteristics
Connection: Welded directly to the pipe, creating a strong, leak-proof,
seamless connection for high integrity.
Application: Ideal for large diameter pipes (above 2 inches) and demanding
industrial environments.
Function: Changes flow direction (elbows, return bends), creates branches
(tees), or reduces flow (reducers).
Types: Available as 45°, 90°, 180° elbows, often with Long Radius (LR) for
better flow or Short Radius (SR) for tight spaces.
Standards: Conforms to standards like ANSI/ASME B16.9, matching pipe dimensions
(NPS) and wall thickness (Schedule).
Materials: Commonly made from wrought carbon steel (like ASTM A234 WPB),
stainless steel (304, 316), or alloy steels, matching the connected pipe
material.
Industry Applications
Petrochemical Plants
Critical for reactor feed lines
Catalyst transfer systems
Flare gas collection networks
Oil & Gas Pipelines
Gathering lines
Transmission systems
Refinery process piping
Water Infrastructure
Pump station routing
Treatment plant distribution
Desalination systems
Why Choose Jinsheng Buttweld Bends?
Manufacturing Advantages:
1. In-house forging & heat treatment facilities

2. Automated CNC machining for consistency

3.100% hydrostatic & NDE testing

Quality Assurance:
1. PMI verification for material traceability

2. Certified MTRs with each shipment

3. Full dimensional inspection reports

Supply Chain Benefits:
Global logistics network

Emergency production capacity

Inventory stocking programs

Minimum Order: 100 sets

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