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Socket Weld Flange China Supplier
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Name: Socket Weld Flange China Supplier
Standard: ANSI B16.5
Type: SW
Material: Stainless Steel
Face: RF
Size: 1 Inch
Class: 150LB
Feature: Easy to Install and Disassemble, Good Sealing Performance
Process Method: Forged
Usage: High Temperature, High Pressure, Carrying Flammable, Explosive Gas or Liquid Occasions
Price: Price Favorable
Standard: ANSI B16.5
Type: SW
Material: Stainless Steel
Face: RF
Size: 1 Inch
Class: 150LB
Feature: Easy to Install and Disassemble, Good Sealing Performance
Process Method: Forged
Usage: High Temperature, High Pressure, Carrying Flammable, Explosive Gas or Liquid Occasions
Price: Price Favorable
Quantity
When selecting critical piping components for high-risk industrial environments, the choice of a reliable Socket Weld Flange often determines the long-term integrity of the entire system. As a dedicated China Supplier with over two decades of forging and machining experience, we present our ANSI B16.5 Stainless Steel Socket Weld Flange (Type SW, Size 1 Inch, Class 150LB, Raised Face) – a component engineered not merely to meet standards, but to exceed the strenuous demands of modern process engineering.
Design & Manufacturing Excellence
Manufactured strictly in accordance with ASME/ANSI B16.5, this forged socket weld flange undergoes a multi-stage hot-forging process followed by precision annealing and CNC machining. The forging route refines the grain structure, eliminating porosity and internal voids – a critical advantage over cast alternatives. The raised face (RF) finish is meticulously machined to a 125–250 microinch roughness, ensuring optimal gasket compression and leak-tight sealing even under thermal cycling. The use of premium austenitic stainless steel (e.g., 304/316L) provides exceptional resistance to intergranular corrosion and oxidation, making it suitable for service temperatures ranging from -29°C to 538°C (depending on grade).
Manufactured strictly in accordance with ASME/ANSI B16.5, this forged socket weld flange undergoes a multi-stage hot-forging process followed by precision annealing and CNC machining. The forging route refines the grain structure, eliminating porosity and internal voids – a critical advantage over cast alternatives. The raised face (RF) finish is meticulously machined to a 125–250 microinch roughness, ensuring optimal gasket compression and leak-tight sealing even under thermal cycling. The use of premium austenitic stainless steel (e.g., 304/316L) provides exceptional resistance to intergranular corrosion and oxidation, making it suitable for service temperatures ranging from -29°C to 538°C (depending on grade).
Performance in Demanding Applications
This 1-inch SW flange is rated to Class 150LB (PN20), with a design pressure of up to 285 psi at ambient conditions and derated accordingly for elevated temperatures. Its socket-weld geometry creates a strong, permanent joint with minimal stress concentration – ideal for small-bore, high-pressure piping systems that convey flammable hydrocarbons, superheated steam, or explosive chemical intermediates. Common application scenarios include:
- Petrochemical refineries – connecting transfer lines for naphtha, crude oil, and reformate.
- Natural gas processing plants – used in metering skids and compressor station piping.
- Pharmaceutical and specialty chemical facilities – where zero fugitive emission is mandatory.
- Power generation auxiliary systems – handling high-temperature condensate or boiler feedwater.
This 1-inch SW flange is rated to Class 150LB (PN20), with a design pressure of up to 285 psi at ambient conditions and derated accordingly for elevated temperatures. Its socket-weld geometry creates a strong, permanent joint with minimal stress concentration – ideal for small-bore, high-pressure piping systems that convey flammable hydrocarbons, superheated steam, or explosive chemical intermediates. Common application scenarios include:
- Petrochemical refineries – connecting transfer lines for naphtha, crude oil, and reformate.
- Natural gas processing plants – used in metering skids and compressor station piping.
- Pharmaceutical and specialty chemical facilities – where zero fugitive emission is mandatory.
- Power generation auxiliary systems – handling high-temperature condensate or boiler feedwater.
Operational Advantages
Unlike slip-on or threaded flanges, the socket weld design offers superior fatigue resistance due to the fillet weld at the hub, while still allowing moderate axial movement during thermal expansion. The RF face, combined with a spiral-wound or PTFE gasket, guarantees a dependable seal even in cyclic pressure services. Maintenance crews will appreciate the straightforward installation: simply insert the pipe into the socket, tack-weld, then complete the fillet weld – no complex alignment tools required. Disassembly, though less frequent, is equally manageable with standard bolting patterns (4 bolts for 1-inch Class 150), reducing downtime during inspection or replacement.
Unlike slip-on or threaded flanges, the socket weld design offers superior fatigue resistance due to the fillet weld at the hub, while still allowing moderate axial movement during thermal expansion. The RF face, combined with a spiral-wound or PTFE gasket, guarantees a dependable seal even in cyclic pressure services. Maintenance crews will appreciate the straightforward installation: simply insert the pipe into the socket, tack-weld, then complete the fillet weld – no complex alignment tools required. Disassembly, though less frequent, is equally manageable with standard bolting patterns (4 bolts for 1-inch Class 150), reducing downtime during inspection or replacement.
Quality Assurance & Cost-Effectiveness
Every batch is subjected to positive material identification (PMI), hardness testing, and hydrostatic proof testing to verify dimensional accuracy and mechanical properties. As a leading China Supplier, we leverage integrated production – from billet sourcing to final machining – to offer this flange at a price significantly lower than European or North American counterparts, without compromising on material traceability or certification (EN 10204 3.1 available). Our just-in-time delivery and bulk packaging options further lower your total landed cost.
Every batch is subjected to positive material identification (PMI), hardness testing, and hydrostatic proof testing to verify dimensional accuracy and mechanical properties. As a leading China Supplier, we leverage integrated production – from billet sourcing to final machining – to offer this flange at a price significantly lower than European or North American counterparts, without compromising on material traceability or certification (EN 10204 3.1 available). Our just-in-time delivery and bulk packaging options further lower your total landed cost.
Why Partner with Us
We understand that a flange is not a commodity; it is a safety barrier. Our technical team provides free installation guidance, torque specifications, and weld procedure recommendations (WPS) to ensure your field joints meet ASME Section IX requirements. With thousands of socket weld flanges shipped monthly to oil majors and EPC contractors worldwide, we have honed our quality control and logistics to deliver consistency, shipment after shipment.
We understand that a flange is not a commodity; it is a safety barrier. Our technical team provides free installation guidance, torque specifications, and weld procedure recommendations (WPS) to ensure your field joints meet ASME Section IX requirements. With thousands of socket weld flanges shipped monthly to oil majors and EPC contractors worldwide, we have honed our quality control and logistics to deliver consistency, shipment after shipment.
Choose our ANSI B16.5 Socket Weld Flange for your next high-stakes project – where safety, sealability, and lifecycle value are non-negotiable. Contact us today for detailed dimension drawings, material test reports, or a customized quotation tailored to your operating conditions.
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