Description
Product Detail
Hastelloy socket weld flange is a forged flange with a recessed socket that accepts pipe insertion before fillet welding, providing accurate pipe alignment and strong joint integrity in small-diameter, high-pressure piping. It is preferred for corrosive and high-purity service where nickel-based alloy performance is needed, especially in chemical plants, offshore systems, scrubbers, chlorination units and power process lines.
SASA FLANGE supplies Hastelloy socket weld flanges in international standards and customized dimensions for demanding projects. Each order can be supported with chemical analysis, mechanical testing, dimensional inspection, PMI verification, visual inspection and EN 10204 3.1 certification. Full heat number traceability is maintained from raw material to finished flange to support global EPC, OEM and maintenance requirements.
- ✓Product Name: Hastelloy Socket Weld Flange
- ✓Material Grade: ASTM B564 N10276, N06022, N06200
- ✓Product Type: Forged Socket Weld Flange
- ✓Main Feature: Excellent resistance to pitting, crevice corrosion, oxidizing and reducing media
- ✓Applications: Chemical processing, offshore, power generation, flue gas desulfurization, marine and water treatment systems
Product Parameters
| Product Name | Hastelloy Socket Weld Flange |
| Material Grade | ASTM B564 N10276 (C276), N06022 (C22), N06200 (C2000), N10665 (B2) on request |
| Material Type | Nickel-based corrosion resistant alloy |
| Product Form | Forged and CNC machined socket weld flange |
| Size Range | DN15 – DN150 (1/2 inch – 6 inch), common standard production up to 4 inch |
| Pressure Class | Class 150 – 2500 / PN10 – PN100 |
| Sealing Face | RF, FF, RTJ on request for selected pressure classes |
| Surface Treatment | Natural machined, pickled, passivated, protective oil coating |
| Standard | ASME B16.5, EN 1092-1, DIN, JIS B2220, GB/T 9119 or customer specification |
| Inspection | Chemical Analysis, Mechanical Test, PMI Test, Dimensional Inspection, Visual Inspection, Hydrostatic when specified |
| Certificate | EN 10204 3.1 Material Certificate available |
| Processing Service | Cutting, CNC Machining, Custom Drilling, Custom Size Processing |
Chemical Composition
Typical chemical composition below is for reference for a common Hastelloy grade used in socket weld flanges. Final chemistry depends on the specified alloy, applicable ASTM material standard and certified mill test certificate. SASA FLANGE verifies incoming material by document review and PMI to ensure compliance with order requirements.
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| Hastelloy C276 Content % | 0.01 max | 0.08 max | 1.00 max | 0.04 max | 0.03 max | 14.5-16.5 | Balance | 15.0-17.0 | Fe 4.0-7.0, W 3.0-4.5, Co 2.5 max, V 0.35 max |
Mechanical Properties
Mechanical properties shown are typical room-temperature values for common Hastelloy forged material grades used for flange manufacturing. Actual values may vary with alloy type, heat treatment condition, forging reduction ratio and section thickness. Certified test results are supplied according to the applicable material specification and EN 10204 3.1 documentation.
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Hastelloy C276 / N10276 | 690 MPa min | 283 MPa min | 40% min | 100 HRB max | 8.89 g/cm3 |
| Hastelloy C22 / N06022 | 690 MPa min | 310 MPa min | 45% min | 100 HRB max | 8.69 g/cm3 |
Common Size Table
| Size Range | Pressure Class | Sealing Face | Material | Availability |
|---|---|---|---|---|
| DN15 – DN50 | Class 150 – 600 | RF | Hastelloy C276 / C22 | Stock / Production |
| DN65 – DN100 | Class 150 – 1500 | RF / RTJ | Hastelloy C276 / C22 | Production |
| DN125 – DN150 | Class 300 – 2500 | RF / RTJ | Hastelloy C276 / C2000 | Production |
| Special up to DN150 | Class 150 – 900 | RF | Hastelloy B2 / special alloy | Made to Order |
Different Specifications Comparison
| Type | Description | Typical Use |
|---|---|---|
| Socket Weld Flange | Flange with recessed socket bore for pipe insertion and fillet welding | Small-bore high-pressure corrosive service |
| Slip On Flange | Pipe passes through flange bore and is welded inside and outside | Low to medium pressure utility and process lines |
| Weld Neck Flange | Long tapered hub butt-welded to pipe for stress transition | Critical high-pressure and high-temperature systems |
| Threaded Flange | Internal threaded connection without welding | Small-bore non-weld or maintenance applications |
Equivalent Standards and International Names
Socket weld flange dimensions are generally supplied according to piping flange standards, while Hastelloy alloy designation follows ASTM or UNS material grades. Equivalent naming may differ by region, but UNS numbers such as N10276 and N06022 are widely accepted for international projects. SASA FLANGE can match drawing, pressure rating and material callout requirements for export orders.
| Standard / Region | Standard Code | Typical Grade / Equivalent |
|---|---|---|
| USA | ASME B16.5 | ASTM B564 UNS N10276, N06022, N06200 |
| Europe | EN 1092-1 | Nickel alloy flange to EN dimensions with UNS N10276 / N06022 material |
| Germany | DIN 2565 / DIN 2566 | DIN pattern socket weld type by drawing with Hastelloy C276 equivalent UNS N10276 |
| Japan | JIS B2220 | JIS flange drilling with Hastelloy C276 / C22 material |
| China | GB/T 9119 | GB flange dimensions with UNS N10276 / N06022 nickel alloy |
Production Process Flow
Manufacturing control is critical for nickel alloy socket weld flanges because corrosion resistance and dimensional precision must both be maintained. SASA FLANGE applies traceable process control from raw material verification through forging, machining, inspection and export packing.
- 1. Raw Material Selection
- 2. Forging / Cutting
- 3. Heat Treatment
- 4. Rough Machining
- 5. Finish Machining
- 6. Drilling
- 7. Surface Treatment
- 8. Inspection
- 9. Marking
- 10. Packing
- 11. Delivery
| Process Step | Description | Quality Control Point |
|---|---|---|
| Raw Material | Select certified nickel alloy billets or forged blanks | Material certificate, PMI verification and traceability |
| Forging | Hot forge or machine from qualified forged stock to required profile | Forging temperature, reduction ratio and grain flow control |
| Heat Treatment | Solution annealing or required condition per alloy specification | Temperature uniformity and holding time records |
| Machining | Machine socket bore, sealing face, hub, bore and bolt holes | Dimensional accuracy, concentricity and surface finish |
| Inspection | Final inspection before shipment | Dimension, surface condition, PMI, marking and document review |
Product Inspection
1. Chemical Composition Inspection
Chemical composition is checked against the specified Hastelloy grade by reviewing the mill certificate and, when required, conducting laboratory verification. This ensures major alloying elements such as nickel, chromium and molybdenum are within specification so the flange can deliver the intended resistance to oxidizing, reducing and chloride-containing media.
2. Mechanical Properties Testing
Mechanical testing verifies that forged material meets the minimum tensile strength, yield strength, elongation and hardness requirements of the ordered alloy standard. These tests confirm that the flange has suitable strength and ductility for pressure piping service, especially in small-bore corrosive systems where weld integrity and dimensional stability are important.
3. Dimensional Inspection
Each flange is inspected for outside diameter, thickness, hub dimensions, socket depth, bore size, bolt circle, bolt hole accuracy and facing profile. Sealing face finish and visual condition are also checked to ensure proper gasket seating and trouble-free installation according to ASME, EN, DIN, JIS, GB or approved customer drawings.
4. PMI Testing and Hydrostatic Testing
Positive Material Identification is performed to confirm the nickel alloy grade before shipment and to avoid material mix-up in critical projects. Hydrostatic testing can be arranged when required by project specification or assembly condition. SASA FLANGE supplies EN 10204 3.1 certificate, inspection records and full heat number traceability for each batch.
Product Packaging
- ✓Wooden Case Packaging: Suitable for high-pressure and large-diameter products
- ✓Pallet Packing with Shrink Wrap: Suitable for batch shipments and standard sizes
- ✓Anti-rust Oil Coating + Waterproof Paper: Used for ocean freight protection
- ✓Individual Plastic Bag + Carton: Used for small fittings and threaded products
- ✓Clear Marking: Grade, size, pressure class, heat number and PO number
Applications
Hastelloy socket weld flanges are selected for compact piping systems handling aggressive chemicals, chloride media, acidic streams and mixed oxidizing or reducing environments. Their forged construction, reliable socket weld connection and nickel alloy corrosion resistance make them suitable for critical small-bore lines across process, utility and offshore installations.
| Industry | Typical Applications | Why This Product Is Used |
|---|---|---|
| Oil and Gas | Chemical injection lines, analyzer systems, produced water skids, offshore process piping | Provides compact high-integrity connection with excellent resistance to sour, chloride and corrosive process media |
| Chemical Processing | Acid transfer lines, reactor auxiliaries, chlorination units, caustic and mixed chemical services | Hastelloy offers broad corrosion resistance in both oxidizing and reducing environments |
| Power Generation | FGD systems, condensate chemical dosing, specialty alloy instrument and sampling lines | Performs well where corrosion, temperature fluctuation and reliability are critical |
| Water Treatment | Desalination chemical lines, chlorine dioxide systems, aggressive dosing skids | Suitable for corrosive treatment chemicals and compact small-bore piping layouts |
| Marine and Offshore | Seawater handling auxiliaries, platform utility skids, scrubber systems | Nickel alloy construction improves resistance to seawater splash, chloride attack and harsh offshore conditions |
Why Choose SASA FLANGE?
- ✓Professional manufacturer of Socket Weld Flange for global industrial projects
- ✓Customized size, pressure class and material grade according to drawings
- ✓Full standard support: ASME, EN, DIN, JIS, GB, GOST and customer specifications
- ✓Material traceability with heat number control and EN 10204 3.1 material certificate
- ✓Chemical analysis, mechanical testing, PMI testing, hydrostatic and dimensional inspection
- ✓Stock availability for standard items, lead time 3-7 days; custom production 15-30 days
- ✓Export-grade packaging for sea, air and land transportation
- ✓15+ years experience supplying 50+ countries worldwide
FAQ
Q: What is a Hastelloy socket weld flange?
A: A Hastelloy socket weld flange is a forged nickel alloy flange with a recessed socket that allows the pipe to be inserted before fillet welding. It is commonly used on small-diameter piping where good alignment, compact installation and high corrosion resistance are required. Typical applications include chemical service, offshore skids, dosing lines and high-purity process systems.
Q: What materials are available for Hastelloy socket weld flanges?
A: SASA FLANGE commonly supplies Hastelloy C276, Hastelloy C22 and Hastelloy C2000 according to ASTM B564 or equivalent project requirements. Other nickel alloy grades such as Hastelloy B2 can be supplied on request for specific reducing media. Material selection depends on process chemistry, temperature, pressure and the corrosion resistance required by the end application.
Q: What pressure class is supported?
A: Hastelloy socket weld flanges are typically supplied in ASME Class 150, 300, 600, 900, 1500 and 2500, depending on size and design standard. For EN or other regional standards, equivalent PN ratings can also be produced. Standard socket weld flange sizes are generally used for smaller diameters, most commonly from 1/2 inch to 4 inch.
Q: Can SASA FLANGE supply custom sizes?
A: Yes. SASA FLANGE can produce custom dimensions, non-standard drilling, special facing details, project-specific bore sizes and drawing-based socket weld flanges in Hastelloy alloys. We support ASME, EN, DIN, JIS, GB and client specifications. Custom machining for RF, FF or RTJ faces and special marking, packaging and documentation can also be arranged.
Q: What certificate is provided?
A: We can provide EN 10204 3.1 material certificate together with mill test certificate, inspection report, dimensional records and PMI verification results. Mechanical test data and chemical analysis are available according to the material standard and order requirement. Hydrostatic or additional NDT-related documentation can be arranged when specified by the customer or project purchase documents.
Contact Us
If you are looking for flange neck hastelloy socket or related custom flange products, please contact SASA FLANGE with your required size, pressure class, material grade, standard, surface treatment, quantity and inspection requirements. Our team will provide professional technical solutions and competitive quotation within 24 hours.
- 📧 Email: sales@sasaflange.com
- 📱 WhatsApp: +86 13764965049
- ☎️ Tel: +86 21 52236361
- 🌐 Website: www.sasaflange.com
