Threaded Forged Pipe Fittings & Socket Weld Forged Pipe Fittings

High Pressure Forged Pipe Fittings Supplier

Threaded forged pipe fittings and socket weld forged pipe fittings are widely used in high-pressure piping systems for oil & gas, petrochemical plants, power generation and industrial processing.

Shaanxi Gold-Stone I/E Co., Ltd. supplies a full range of forged pipe fittings manufactured according to international standards including ASME B16.11, JIS B2316 and other global specifications.

These forged fittings provide excellent strength, pressure resistance and durability for demanding industrial environments.

Product Types

Our forged pipe fittings include:

• 90° Elbow
• 45° Elbow
• Straight Tee
• Reducing Tee
• Cross
• Union
• Coupling
• Reducer
• Cap
• Plug
• Nipple
• Welded Olet
• Socket Olet

These fittings are suitable for threaded or socket welded pipe connections in high-pressure pipeline systems.

Technical Specifications

Item	Specification
Product Type	Threaded & Socket Weld Forged Pipe Fittings
Size Range	1/8″ – 4″ (DN6 – DN100)
Pressure Rating	Class 3000 / 6000 / 9000
Manufacturing Method	Forged
Connection Type	Threaded / Socket Weld

Manufacturing Standards

Our forged pipe fittings are produced according to international standards including:

ASME B16.11

GB/T 14383

SH 3410

HG 21634

JIS B2316

Custom non-standard fittings can also be manufactured according to customer drawings.

Materials

Forged fittings can be manufactured using various materials depending on the application requirements.

Carbon Steel

ASTM A105

20# – 25#

Alloy Steel

ASTM A182 F11

ASTM A182 F22

16Mn

Cr5Mo

15CrMo

Stainless Steel

304 / 304L

316 / 316L

316Ti

317 / 317L

321 / 321H

Duplex Stainless Steel

ASTM A815 S31803

ASTM A815 S32205

S32750

S32760

Super Stainless Steel

ASTM 904L

254SMO (UNS S31254)

WP317 / 317L

Applications

Forged threaded and socket weld fittings are widely used in industrial piping systems including:

• Oil and gas pipelines
• Petrochemical plants
• Power generation facilities
• Chemical processing systems
• High-pressure fluid pipelines

Advantages of Forged Pipe Fittings

High Strength
Forged manufacturing improves mechanical strength and pressure resistance.

Excellent Sealing
Threaded and socket weld connections provide reliable sealing in high-pressure systems.

Corrosion Resistance
Available in stainless steel and duplex materials for corrosive environments.

Wide Industry Applications
Suitable for oil, gas, power and chemical industries.

Quality Control

All fittings supplied by Shaanxi Gold-Stone I/E Co., Ltd. undergo strict quality inspection procedures.

Inspection methods include:

• Chemical composition testing
• Mechanical property testing
• Dimensional inspection
• Pressure testing

Third-party inspection is available through organizations such as SGS and Bureau Veritas.

FAQ

What is the difference between threaded fittings and socket weld fittings?

Threaded fittings use screw threads for connection, while socket weld fittings require welding after the pipe is inserted into the fitting socket.

What pressure ratings are available for forged fittings?

Common pressure classes include Class 3000, 6000 and 9000, suitable for high-pressure piping systems.

What standard is used for forged pipe fittings?

The most widely used international standard is ASME B16.11.

Forged Fittings Size Chart

Forged threaded and socket weld fittings are manufactured according to the international standard ASME B16.11, which specifies dimensions, pressure ratings and tolerances for high-pressure forged fittings.

The following size chart provides a general reference for threaded and socket weld forged fittings.

Standard Size Range

Nominal Pipe Size	DN	Outside Diameter (mm)	Pressure Class
1/8″	DN6	10.3	3000 / 6000 / 9000
1/4″	DN8	13.7	3000 / 6000 / 9000
3/8″	DN10	17.1	3000 / 6000 / 9000
1/2″	DN15	21.3	3000 / 6000 / 9000
3/4″	DN20	26.7	3000 / 6000 / 9000
1″	DN25	33.4	3000 / 6000 / 9000
1-1/4″	DN32	42.2	3000 / 6000 / 9000
1-1/2″	DN40	48.3	3000 / 6000 / 9000
2″	DN50	60.3	3000 / 6000 / 9000
3″	DN80	88.9	3000 / 6000 / 9000
4″	DN100	114.3	3000 / 6000 / 9000

Typical forged fittings include:

• 90° elbow
• 45° elbow
• tee
• cross
• coupling
• union
• cap
• plug
• nipple

Shaanxi Gold-Stone I/E Co., Ltd. supplies forged fittings in a full range of sizes and pressure classes for oil & gas and industrial piping systems.

Threaded vs Socket Weld Fittings Guide

Threaded fittings and socket weld fittings are both widely used in high-pressure piping systems, but they are designed for different installation methods and applications.

Both types are manufactured according to ASME B16.11 and are commonly used in oil, gas, petrochemical and power plant piping.

Connection Method Comparison

Feature	Threaded Fittings	Socket Weld Fittings
Connection Type	Threaded screw connection	Pipe inserted and welded
Installation	Easy installation without welding	Requires welding
Leakage Risk	Higher if threads are damaged	Very strong sealing
Pressure Resistance	Suitable for medium pressure	Suitable for high pressure
Maintenance	Easy to remove and replace	Permanent welded connection

Threaded Forged Pipe Fittings

Threaded fittings use screw threads to connect pipes. This connection method is quick and easy to install without welding.

Advantages:

• Easy installation
• Convenient maintenance
• No welding required

Typical applications:

• Low and medium pressure pipelines
• Water and gas pipelines
• Small industrial piping systems

Socket Weld Forged Pipe Fittings

Socket weld fittings connect pipes by inserting the pipe into a socket and welding around the joint.