Butt Weld Pipe Elbows Manufacturer | ASME B16.9 / EN / GOST Pipe Fittings Supplier

Butt weld pipe elbows are widely used fittings designed to change the direction of piping systems in industrial applications. Compared with threaded or socket weld fittings, butt weld elbows provide stronger connections, better pressure resistance, and smoother fluid flow.

These fittings are commonly installed in oil and gas pipelines, petrochemical plants, power stations, water treatment systems, and shipbuilding projects. Their welded connection ensures long-term reliability in high-pressure and high-temperature environments.

As a professional manufacturer and supplier, we provide a full range of butt weld pipe elbows in carbon steel, stainless steel, and alloy steel, manufactured in accordance with international standards such as ASME B16.9, MSS SP, EN standards, and GOST standards.

Types of Butt Weld Pipe Elbows

Butt weld elbows are produced in different angles to meet various pipeline design requirements.

90 Degree Butt Weld Elbow

The 90 degree butt weld elbow is the most commonly used fitting in industrial pipelines. It changes the pipeline direction by 90 degrees while maintaining efficient flow characteristics.

Features:

Available in long radius (LR) and short radius (SR)
Suitable for high pressure piping systems
Reduces pressure loss and turbulence
Widely used in oil pipelines and refinery systems

45 Degree Butt Weld Elbow

A 45 degree elbow allows a smaller directional change and is typically used where smoother flow transitions are required.

Common applications include:

Chemical processing plants
Water treatment systems
Industrial piping networks

180 Degree Butt Weld Elbow

The 180 degree butt weld elbow, also known as a return elbow, is used when the pipeline must reverse direction.

It is often installed in:

Heat exchanger systems
Boiler piping systems
Compact piping layouts

Long Radius and Short Radius Elbows

Long Radius Elbow (LR)

A long radius elbow has a centerline radius equal to 1.5 times the pipe diameter (1.5D).

Advantages include:

Lower pressure drop
Improved fluid flow
Reduced turbulence

Long radius elbows are widely used in large pipeline systems and high-flow applications.

Short Radius Elbow (SR)

A short radius elbow has a radius equal to 1.0 times the pipe diameter (1D).

Benefits include:

Space-saving installation
Suitable for tight piping layouts
Commonly used in shipbuilding and compact equipment systems

Butt Weld Pipe Elbow Standards

Our butt weld pipe elbows are manufactured according to major international standards used in global piping projects.

ASME B16.9 Standard

ASME B16.9 specifies the dimensions and tolerances for factory-made wrought butt welding fittings.

This standard is widely used in:

Oil and gas industry
Petrochemical plants
Power generation facilities

MSS SP Standards

MSS standards are commonly applied to special piping applications.

Typical standards include:

MSS SP-75 – High-test wrought butt welding fittings
MSS SP-43 – Stainless steel butt weld fittings

These standards are widely used in pipeline construction projects.

EN Standards

European piping systems often follow EN standards, including:

EN 10253-2 – Butt welding fittings for pressure purposes
EN 10253-4 – Stainless steel butt weld fittings

These standards are used for European industrial and pressure equipment projects.

GOST Standards

In Russia and CIS countries, pipe fittings are typically produced according to GOST standards, including:

GOST 17375 – Steel butt welding elbows
GOST 17380 – Butt weld pipe fittings

These standards are widely applied in oil pipelines and heavy industry projects.

Materials of Butt Weld Pipe Elbows

Butt weld elbows are available in various materials depending on operating conditions.

Carbon Steel Elbows

Common grades include:

ASTM A234 WPB
ASTM A420 WPL6
ASTM A860

Carbon steel elbows are widely used in oil pipelines, gas transmission systems, and industrial piping networks.

Stainless Steel Elbows

Typical stainless steel grades:

ASTM A403 WP304 / WP304L
ASTM A403 WP316 / WP316L
ASTM A403 WP321

Stainless steel elbows provide excellent corrosion resistance and are suitable for chemical processing, food production, and pharmaceutical industries.

Alloy Steel Elbows

Alloy steel elbows are used in high-temperature and high-pressure systems.

Common grades include:

ASTM A234 WP11
ASTM A234 WP22
ASTM A234 WP91

These fittings are commonly used in power plants and refinery pipelines.

Butt Weld Pipe Elbow Size Chart (ASME B16.9)

The typical size range for butt weld pipe elbows is 1/2 inch to 72 inches with various wall thickness options.

NPS	Outside Diameter (mm)	Long Radius
1/2″	21.3	38
1″	33.4	38
2″	60.3	76
4″	114.3	152
6″	168.3	229
8″	219.1	305
12″	323.9	457
24″	610	914

Available wall thickness:

SCH 10
SCH 20
SCH 40
SCH 80
SCH 160
XXS

Manufacturing Process

The production of butt weld pipe elbows typically includes the following steps:

Raw material inspection
Pipe cutting
Hot forming or cold forming
Heat treatment
Surface finishing
Dimensional inspection
Non-destructive testing (NDT)

Strict inspection ensures the fittings meet international quality and safety requirements.

Applications of Butt Weld Pipe Elbows

Butt weld elbows are widely used in many industrial sectors, including:

Oil and gas pipelines
Petrochemical plants
Power generation systems
Shipbuilding industry
Chemical processing facilities
Water treatment plants

Their welded connection provides excellent strength, leak resistance, and long service life.

Frequently Asked Questions

What is a butt weld pipe elbow?

A butt weld pipe elbow is a pipe fitting used to change the direction of a pipeline. It is connected to the pipe through butt welding, forming a strong and leak-proof joint.

What is the difference between long radius and short radius elbows?

The difference lies in the radius of curvature.

Long radius elbow: 1.5 × pipe diameter
Short radius elbow: 1 × pipe diameter

Long radius elbows provide smoother flow and lower pressure loss.

What standards are used for butt weld elbows?

Common manufacturing standards include:

ASME B16.9
MSS SP-75
EN 10253
GOST 17375

In addition to butt weld reducers, we also supply a full range of butt weld pipe fittings, including

butt weld Reducer

butt weld caps

butt weld tees