Socket Weld Flange

The Socket Weld Flange Manufacturer!

Dingxiang Yixinyuan Flange Processing Co.,Ltd. is the manufacturing that a profession is engaged in free forging, mold forging, vorious molding tool steel, various machine accesories and large forging piece etc. management business enterprise.

Why choose us

One-Stop Service

My company has buy, examine, saw to slice, forge from the material, hot processing, the machine process packing hair luck the integral whole turn of production system.

Product Application

Petrochemical industry, energy industry, water treatment industry, environmental protection engineering, construction engineering, shipbuilding industry, valves, water pumps, power plants, steel mills: valves, water pumps, power plants, steel mills.

Quality Control

Company strictly according to ISO9000 standard organize produce and manage, build up valid circulate stable dependable quality management and guarantee system, strict material production equipments and quality of the control, consummate processing technology experience and forerunner examination experiment.

Parameters	Standard range	Limit capacity
Pressure rating	Class 3000-9000	Class 15000 (258MPa)
Nominal diameter	½"-4" (DN15-100)	6" (DN150) non-standard
Convex height	1.6mm (Class≤300)	6.4mm (Class≥600)
Insertion depth	Pipe diameter +1.6mm	Laser calibration ±0.05mm
Surface roughness	Ra 3.2μm	Ra 0.8μm mirror surface

Material	Yield strength	Extreme condition	Certification criteria
A105	250MPa	425℃/69MPa	ASME B16.5
A350 LF2	275MPa	-46 ° C deep cold	EN 10204 3.2
A694 F70	483MPa	3000m underwater	API 6A
316L+N	220MPa	Cl⁻>10000ppm	NACE MR0103

Advantages of Socket Weld Flange

Leak-Proof Relationships:

The recessed socket provides an optional sealing surface, minimizing the chance of leakage.

Strong Mechanical Asset:

The fillet weld around the pipe adds structural strength and vibration resistance.

Lightness of Installation:

No need for full penetration welds; synchronization is trouble-free compared to butt-weld flanges.

Cost-Beneficial for Small Bore Pipes:

Ideal for piping systems with diameters of 2 inches or less.

Short and Durable Design:

Smaller in size compared to other flange types, saving space and reducing weight.

Socket Weld Flange Standards and Dimensions

Pressure Class	Common Size Range
150 to 900	NPS 1/2 – 24
1500 & 2500	NPS 1/2 – 2-1/2

Applications of Socket Weld Flanges

High-Pressure Piping:

Oil & gas, petrochemicals, power plants.

Processing Plants:

Chemical, pharmaceutical, food, and beverage industries.

Steam, Water & Gas Pipelines:

Especially for lines carrying toxic or explosive media.

Small-Bore Piping:

Ideal for pipes 2″ and under, where welded integrity and tightness matter most.

Socket Welded Flange Face Types

RF Type:

An RF socket weld flange features a small raised portion around the flange bore, serving as a seat for the gasket, promoting effective sealing.

RTJ Type:

The RTJ type entails a groove on the raised face surface, allowing for the placement of a gasket ring to enhance sealing performance.

Socket Weld Flange vs. Slip-On Flange:

A socket weld flange closely resembles a slip-on flange, but it distinguishes itself by having a shoulder within the inner bore.

Material Guide for Socket Weld Flanges

Material	Yield Strength (MPa)	Tensile Strength (MPa)	Temperature Range (°C)	515-620	Suited For
Carbon Steel (ASTM A105)	250 – 485	485 – 760	-29 to 425	Low	Oil & gas pipelines, water distribution systems.
Stainless Steel (ASTM A182 F304)	205 – 310	515 – 620	-196 to 815	Moderate	Food processing, general industrial applications.
Stainless Steel (ASTM A182 F316)	205 – 310	515 – 620	-196 to 815	High	Marine environments, chemical processing.
Alloy Steel (ASTM A182 F11/F22)	310 – 415	590 – 795	-29 to 600	Moderate	High-pressure steam systems, power generation.
Duplex Stainless Steel (ASTM A182 F51/F53)	450 – 550	620 – 850	-50 to 300	Very High	Offshore oil & gas, petrochemical applications.
Nickel Alloys (ASTM B564 N06625/N08825)	350 – 450	830 – 950	-200 to 1000	Exceptional	Aerospace, chemical industries, high-temperature applications.
Copper-Nickel (Cu-Ni) (ASTM B151)	105 – 170	275 – 415	-196 to 300	High	Shipbuilding, desalination plants, offshore piping.

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

FAQ

Q: What is a socket weld flange?

A: Socket weld flange is a type of flange welded to the end of a pipe.

Q: What are the advantages of socket weld flanges?

A: Socket weld flanges are strong and reliable, and they can be used in high-pressure and high-vibration applications.

Q: When should I use a socket weld flange?

A: Socket weld flanges are ideal for applications where high pressure or vibration is expected and where a strong and reliable connection is required.

Q: When should I not use a socket weld flange?

A: Socket weld flanges are more difficult to install and disassemble than other types of flanges, and they are more expensive.

Q: How do I install a socket weld flange?

A: To install a socket weld flange, the end of the pipe must be beveled and inserted into the socket of the flange. Then, the flange is welded to the pipe.

Q: What is the gap on a socket weld flange?

A: The ASME B31. 3 standard states that an approximate gap of 1⁄16th of an inch (1.5mm) between the socket and pipe end is required; this gap allows for thermal expansion due to welding and reduces the likelihood that the weld will crack.

Q: Do socket weld flanges have a schedule?

A: Socket Weld Flanges are available in pressure from 150# and up and pipe schedule 40 to schedule 160. Specifying the pipe schedule ensures that ID of the SW Flange matches the ID of pipe for smooth fluid flow.

We're professional socket weld flange manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to wholesale bulk socket weld flange for sale here from our factory.

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