Socket Weld Flange

Dimensions: 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, 2”, 2-1/2”, 3”
Material: Carbon, Alloy and Stainless Steel
Thickness: Schedule 10(S) to SCH 160
Standard: ASME, ANSI, DIN, JIS, EN, etc
Class Range: Class 150 to 1500 (# or LB). PN 2.5 to PN 100.
Flange Face Type: RF, FF, MFM, TG, RJ
End: plain end
Connection: socket weld
Manufacturing Process: Forging
Socket weld flange has a socket to receive the pipe, welded externally for compact structure. It prevents internal weld protrusion, suitable for small-diameter, high-pressure pipelines.
It complies with standards like ANSI/ASME B16.5, DIN, EN 1092-1, and GOST , available in PN6-PN160 and DN15-DN5000, with materials including carbon steel, stainless steel, and alloy steel.
Ideal for instrumentation, hydraulic systems, nuclear power, and small-bore process pipelines.
Product Description

Socket Weld Flange - High-Performance Piping Solutions by Shanxi Hongkai Forging

When it comes to reliable small-bore piping connections, our Socket Weld Flange stands as the industry standard for high-pressure applications. At Shanxi HongKai Forging Co., Ltd.,we fabricate premium items that provide extraordinary auxiliary judgment with 50% higher weakness quality than ordinary slip-on plans. Our socket flanges highlight precision-machined counterbores that dispense with arrangement issues whereas giving airtight fixing for harmful and combustible media. With determinations extending from DN15 to DN4000 and pressure ratings up to Class 2500, our products meet stringent ASME B16.5, EN1092-1, and DIN standards for critical industrial applications.

Socket Weld Flange - High-Performance Piping Solutions by Shanxi Hongkai Forging

What is Socket Weld Flange

This is a specialized channeling component outlined with a recessed counterbore that gets the pipe conclusion, making a vigorous association through outside filet welding. This plan anticipates inner weld bulge, making it perfect for applications where stream defilement must be avoided.

The socket plan acts as a normal arrangement direct, disposing of the require for tack welding amid establishment. This highlight demonstrates priceless in kept spaces where exact situating is challenging. Not at all like strung associations, socket weld flanges provide permanent, leak-proof joints suitable for hazardous media transportation.

The fabricating handle includes accuracy manufacturing taken after by cautious machining to guarantee correct dimensional resistances. Each flange experiences thorough quality testing to meet worldwide guidelines and convey steady execution in requesting environments.

What is Socket Weld Flange

Socket Weld Flange Specifications

Our socket weld flanges are manufactured to meet multiple international standards:

Standard Type Size Range Pressure Rating / Class Material Options Sealing Surface Coating
ASME B16.5 WN / LWN / SO / Blind / Lap Joint NPS 1/8" - 24" Class 150 - 2500 / 150# - 2500# ASTM A105, A182 F304/316L RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc
ASME B16.47 Series A WN / Blind Flange 22" - 60" 150# - 900# Carbon Steel, Stainless Steel, Alloy Steel RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc
ASME B16.47 Series B WN / Blind Flange 26" - 60"; 26" - 48" 75#, 400#, 600#, 900# Carbon Steel, Stainless Steel, Alloy Steel RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc
EN 1092-1 / EN1092-1:2002 Plate flange for welding / Loose plate flange / Weld-on plate collar / Lapped pipe end / Blind / WN flange DN6 - DN4000 PN2.5 - PN400 Carbon Steel, Stainless Steel RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc
JIS B2220 Welding Flange / Lap Joint Flange / Threaded Flange DN6 - DN1500 10K - 40K / PN6 - PN100 Alloy Steel grades available RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc
DIN Standard Plate Flange / WN Flange / Blind Flange DN15 - DN100 PN6 - PN160 Custom materials on request RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc
BS4504 BS10 Table D/E Plate Flange for welding / WN Flange / Blank Flange DN10 - DN1500 PN6 - PN100 Carbon Steel, Stainless Steel, Custom materials RF, FF, MFM, TG, RJ Varnish, yellow paint, anti-rust oil, galvanizing etc

Key Technical Features:

  • Expansion gap: 1/16 inch (1.6mm) standard
  • Face finish: 125-250 RMS per ASME B16.5
  • Hardness: HB ≤ 200 for carbon steel grades
  • Temperature range: -29°C to +400°C depending on material

Socket Weld Flange Materials & Grades

Socket weld flanges are available in a variety of materials. These materials must meet the standards. The material should also meet the quality specified by ASTM or ASME standards. The thickness and inner diameter of the flange depend on the size of the pipe for which this Socket weld flanges is manufactured.

Carbon steel flanges are commonly used manufacturing materials for Socket weld flanges. You can choose the appropriate material according to the medium of the pipeline. You can choose ASTM A105 for normal temperature, ASTM A350 for low temperature, and ASTM A694 for high temperature.

Flanges are available in a variety of grades, such as ASME B16 5, ASME B16 47 “A” series and “B” series to meet the needs of customers and industries.

In addition to this material, Socket weld flanges are also available in stainless steel and alloy steel, which have material properties such as corrosion resistance, high temperature resistance, and wear resistance. At the same time, we also have duplex steel materials to meet the technical requirements of various pipelines of customers. The following table shows the grades of these common materials:

Material Grade
Carbon Steel ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70
Alloy Steel ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ;
Stainless Steel ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Duplex and Super Duplex ASTM/ASME A/SA 182 F44, F45, F51, F53, F55, F60, F61,
S31803, S32205, S32550, S31254, SMO254, S32750, S32760, S32950
Nickel Alloy Steel ASTM/ASME B/SB151 UNS N07060, 71500, C70600 (CuNi 90/10), C71500 (CuNi 70/30)
UNS N08825( INCOLOY 825), UNS N06600(INCONEL 600), UNS N06601(INCONEL 601),
UNS N06625(INCONEL 625), UNS N10276(HASTELLOY C276)
ASTM/ASME B/SB151 UNS N07060, 71500, C70600 (CuNi 90/10), C71500(CuNi 70/30)
Copper Alloy ASTM/ASME B/SB151 UNS N07060, 71500, C70600 (CuNi 90/10), C71500 (CuNi 70/30)
Titanium ASTM/ASME B/SB381 Grade 2, Grade 5, Grade 7

 

Socket Weld Dimensions

Below we have listed some sizes of Socket Weld Flanges (Class 150) under ASME B16.5 (1/2″ to 24″)

 

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ASME B16.5 Class 150 Flanges | Socket-Weld

  • 1/2″ NPS flange has an inner diameter of 0.62″ and an outer diameter of 3.50″. The raised face thickness is 0.62″ and has 4 bolt holes.
  • 3/4″ NPS flange has an inner diameter of 0.82″ and an outer diameter of 3.88″. The raised face thickness is 0.62″ with 4 bolt holes.
  • 1″ NPS flange has an inner diameter of 1.05″ and an outer diameter of 4.25″. The raised face thickness is 0.68″ and the standard bolt holes are 4 numbers.
  • 2″ NPS flange has an inner diameter of 2.07″ and an outer diameter of 6.00″. The raised face thickness is 1.00″ and the flange has 4 bolt holes.
  • 5″ NPS flange has an inner diameter of 5.05″ and an outer diameter of 10.00″. The raised face thickness is 1.44″, and it has 8 bolt holes.
  • 6″ NPS flange has an inner diameter of 6.07″ and an outer diameter of 11.00″. The raised face thickness is 1.56″, and it has 8 bolt holes.
  • 10″ NPS flange has an inner diameter of 10.02″ and an outer diameter of 16.00″. The raised face thickness is 1.94″, and it has 12 bolt holes.
  • 20″ NPS flange has an inner diameter of 21.25″ and an outer diameter of 27.50″. The raised face thickness is 2.87″, and it has 20 bolt holes.
  • 24″ NPS flange has an inner diameter of 23.25″ and an outer diameter of 32.00″. The raised face thickness is 3.25″, and it has 20 bolt holes.

Standardized Socket Weld Flanges

  • Socket Weld Flanges are commonly standardized as ASME B16.5, with sizes ranging from 1/2 inch to 60 inches.
  • Sealing surface types include raised face (RF), flat face (FF), dimpled face (MFM), tongue and groove (TG), ring joint (RJ), and so on.
  • Applicable pressure classes include Class 150, 300, 600, 900, 1500.

Advantages of Socket Weld Flange

Superior Structural Performance

Our socket weld flanges offer uncommon weariness resistance, making them culminate for high-vibration situations. The single outside filet weld plan gives quality whereas permitting simple visual inspection.

Leak-Proof Design

The socket arrangement makes a positive seal that avoids criminal emanations. This highlight is vital for harmful or costly media where zero spillage is mandatory.

Installation Efficiency

The built-in arrangement highlight diminishes establishment time and dispenses with welding mistakes. Specialists can accomplish legitimate fit-up rapidly, indeed in challenging field conditions.

Cost-Effective Solution

While giving execution comparative to butt weld flanges, socket welds require less accuracy cutting and planning, lessening by and large extend costs.

Quality Assurance

Every spine experiences comprehensive testing counting dimensional confirmation, fabric certification, and weight testing to guarantee dependable long-term performance.

Advantages of Socket Weld Flange

Applications

High-Pressure Hydraulic Systems

Socket weld flanges excel in pressure driven activation frameworks where ceaseless vibration and weight surges would compromise strung associations. Control era and overwhelming apparatus applications depend on these spines for basic pressure driven control systems.

Petrochemical Processing

Refineries utilize these flanges in harmful refining lines where control astuteness is vital. The outside weld plan permits for simple review whereas avoiding inner defilement of catalysts and handle media.

Steam Generation Systems

Power plants depend on socket weld spines for superheated steam inspecting lines and instrumented associations. The plan withstands warm cycling way better than strung options, decreasing support requirements.

Instrumentation and Control

Process businesses utilize these flanges for instrument associations, analyzer test lines, and small-bore prepare channeling where unwavering quality cannot be compromised.

Applications

Why Choose Us

Manufacturing Excellence

Shanxi Hongkai Forging operates three advanced production facilities with integrated capabilities including forging, heat treatment, machining, and comprehensive testing. Our strategic location in Shanxi Province provides access to abundant raw materials and energy resources.

Global Standards Compliance

We maintain certifications for ASME, EN, DIN, JIS, GOST, and Chinese national benchmarks, guaranteeing your ventures meet nearby and universal necessities notwithstanding of location.

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Quality Control System

Our comprehensive quality management includes material traceability, dimensional inspection, non-destructive testing, and pressure testing. Each Socket Weld Flange comes with complete documentation and certificates.

Competitive Advantages

  • Superior quality with competitive pricing
  • Fast conveyance with dependable packaging
  • Technical bolster all through extend lifecycle
  • Extensive stock for quick shipment

International Reach

With built up send out connections over Europe and the Americas, we get it worldwide showcase necessities and give localized bolster for universal projects.

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Why Choose Us

FAQ

Q: What is the expansion gap requirement for socket weld installation?

A: Industry standards require approximately 1/16 inch (1.6mm) gap between pipe end and socket bottom. This prevents weld cracking during thermal expansion.

Q: Can socket weld flanges handle corrosive environments?

A: Yes, when manufactured from appropriate materials like 316L stainless steel. However, the internal crevice requires monitoring in highly corrosive stagnant fluids.

Q: What NDT methods are used for inspection?

A: Socket welds are inspected using Magnetic Particle Testing (MT) or Liquid Penetrant Testing (PT) for surface defect detection, as radiographic testing isn't applicable to fillet welds.

Q: Why is size typically limited to NPS 4?

A: Larger sizes experience welding heat distortion issues and become less cost-effective compared to butt weld alternatives.

Q: What materials are available for high-temperature service?

A: We offer ASTM A182 F11 and F22 alloy steel grades for elevated temperature applications up to 650°C, along with standard carbon and stainless steel options.

Contact Us

Quality Socket Weld Flange solutions ensure your piping systems operate safely and efficiently for years to come.

Ready to discuss your product requirements? Contact our technical team at kevin.zhao@hkflange.com for expert guidance and competitive pricing.

Fast Response

Clear Communication, and Reliable Technical Support