Miter bends are pipe fittings manufactured through segment cutting and welding processes, primarily used to change the flow direction in piping systems. They are produced by cutting pipe sections at specific angles according to the design requirements and then fitting and welding the segments together to achieve the required bend angle and configuration. Unlike conventional formed elbows, miter bends allow customization of dimensions, bend angles, and piping configurations to meet project requirements.
Jinhang Pipeline supplies carbon steel, stainless steel, and alloy steel miter bends. Key technical parameters include nominal pipe size (NPS), outside diameter, wall thickness, bend angle, bend radius, and the number of segments.
Each product can be designed and manufactured according to approved engineering drawings and applicable project specifications. Bevel configurations, welding procedures, inspection methods, and surface treatments can also be determined based on the specific requirements of the piping system.
| Item | Specification |
|---|---|
|
Product Name |
Welded Mitre Elbow |
|
Product Type |
Fabricated Mitre Bend / Welded Pipe Bend |
|
Material |
Carbon Steel, Stainless Steel, Alloy Steel |
|
Nominal Pipe Size |
As per project requirements |
|
Outside Diameter (OD) |
As per pipe size or approved drawing |
|
Wall Thickness |
As specified in the design or purchase order |
|
Bend Angle |
Customizable; e.g. 30°, 45°, 60°, 90° |
|
Bend Radius |
As per engineering drawing |
|
Number of Mitres / Segments |
As per design requirements |
|
End Connection |
Butt-Weld Ends |
|
End Preparation |
Beveled Ends, as specified |
|
Manufacturing Process |
Pipe Cutting, Fit-Up and Welding |
|
Material Standard |
As specified by the purchaser |
|
Inspection |
Visual and Dimensional Inspection; additional NDE as required |
|
Testing Requirements |
As specified in the project or applicable piping code |
|
Surface Treatment |
Black Painting, Anti-Corrosion Coating or Other Specified Finish |
|
Customization |
Available according to drawings and technical requirements |
|
Application |
Oil and Gas, Petrochemical, Power Generation, Water Transmission and Industrial Piping |
|
Material Category |
Example Material Grades |
Reference Material Standards |
|---|---|---|
|
Carbon Steel |
ASTM A234 WPB |
ASTM A234/A234M |
|
Low-Temperature Carbon Steel |
ASTM A420 WPL6 |
ASTM A420/A420M |
|
Alloy Steel |
ASTM A234 WP11, WP22, WP91 |
ASTM A234/A234M |
|
Stainless Steel |
ASTM A403 WP304/304L, WP316/316L |
ASTM A403/A403M |
|
High-Strength Pipeline Steel |
Project-specified pipeline steel grades |
Applicable project material specification |
Our welded mitre elbows are manufactured with reference to applicable international standards, such as ASME B16.9, where applicable to the product design and manufacturing scope. Dimensions, materials, and fabrication requirements are selected according to project specifications and applicable standards.
Strict control of raw materials, cutting, welding, dimensional accuracy, and surface quality helps ensure proper fit-up, reliable weld integrity, and consistent performance in industrial piping systems. These controls support safe installation and long-term service under specified operating conditions.
Welded mitre elbows are used in piping systems where a fabricated change of direction is suitable for the design, especially for project-specific routing and large-diameter pipework.
Oil and Gas: Fabricated pipeline sections and associated piping systems, subject to engineering design and applicable code requirements.
Petrochemical and Chemical Plants: Process piping layouts requiring custom bend angles or dimensions.
Power Generation: Industrial piping systems designed to meet plant-specific operating conditions.
Water Transmission: Large-diameter water conveyance and distribution systems where the selected bend design meets hydraulic and structural requirements.
Industrial Piping Projects: Custom pipe routing for facilities with non-standard geometry or project-specific fabrication requirements.
The suitability of a welded mitre elbow depends on factors such as operating pressure, temperature, fluid properties, flow conditions, fatigue loading and the applicable piping code. The design should be reviewed by the responsible piping engineer before manufacture.
What is a welded mitre elbow?
A welded mitre elbow is a fabricated pipe fitting made by cutting and welding pipe sections to create a required change in direction. Its geometry is determined by the design and project requirements.
What materials are available for welded mitre elbows?
Common material options include carbon steel, stainless steel and alloy steel. The exact grade should be selected according to operating conditions, corrosion requirements and the applicable material specification.
Can welded mitre elbows be customized?
Yes. Subject to manufacturing capabilities, dimensions, bend angle, bend radius, wall thickness, number of segments and end preparation can be specified according to approved drawings and project requirements.
What bend angles are available?
The required angle depends on the piping design. Common design examples include 30°, 45°, 60° and 90°, while other angles may be possible depending on the fabrication method and engineering requirements.
Which standards apply to welded mitre elbows?
The applicable requirements depend on the project. ASME B31.3 may govern process piping design and fabrication, while ASTM specifications may define the required material. ASME B16.9 should only be specified when the fitting falls within its scope.
What inspection and testing can be specified?
Requirements may include visual inspection, dimensional checks and nondestructive examination, such as radiographic or ultrasonic testing, where required. Pressure or leak testing should be determined by the applicable design code and project specification.
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