Carbon Steel Socket Weld Flange
Material Grade: ASTM A105
Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500.
Size Range: 1/2" – 24" (can customed)
Facing Types: Raised Face (RF), Ring Type Joint (RTJ).
Bore/Socket Detail: Precision-machined socket depth and diameter to ensure perfect pipe fit-up and optimal weld penetration.
Surface Finish: Anti-rust Oil, Black Painting, or Hot-Dipped Galvanized.
Applications:
High-Pressure Steam and Hydraulic Lines.
Chemical & Petrochemical process piping (small diameter).
Gas Distribution and Instrumentation systems.
- Free Samples
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Carbon Steel Socket Weld Flange
Carbon Steel Socket Weld Flange Manufacturer
JS FITTINGS has specialized in fabricating carbon steel socket weld flange for over 40 a long time, conveying premium quality arrangements for small-bore high-pressure channeling frameworks. Our fabricating office ranges 7,000 square meters with progressed generation hardware. With yearly deals surpassing RMB 100 million and month to month shipments outperforming 50 holders, we give comprehensive measure ranges from 1/2" to 3" in weight classes 150-2500. Our attachment weld flanges are trusted by worldwide vitality companies counting NIOC and ADNOC, assembly universal measures like ASME/ANSI B16.5.
Carbon Steel Socket Weld Flange Overview
A attachment weld spine gives an fabulous association arrangement for small-diameter channeling frameworks where tall quality and smooth stream are fundamental. The plan highlights a recessed attachment that acts as a direct and situate for the pipe, requiring as it were a single outside filet weld for installation.
Our product conveys prevalent stream characteristics compared to slip-on options. The inner bear plan guarantees the pipe's inside breadth adjusts superbly with the rib bore, killing stream turbulence and avoiding flotsam and jetsam amassing. This makes them perfect for basic applications in oil and gas, petrochemical, and control era industries.

Key Features & Advantages
Self-Aligning Installation
The inside attachment direct framework streamlines pipe arrangement amid get together, lessening establishment time and killing the require for specialized fit-up tools.
Superior Flow Performance
The flush inner joint makes smooth stream moves, avoiding turbulence and diminishing erosion-corrosion at association points.
Enhanced Fatigue Resistance
Single outside welding combined with secure pipe-to-flange fit gives uncommon weariness quality compared to slip-on designs.
Simplified Pipe Preparation
No pipe beveling required - a straightforward square cut plans the pipe conclusion, altogether lessening planning time.
Zero Internal Weld Protrusion
External-only welding dispenses with weld globule interruption into the stream way, basic for delicate liquid applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturing Standard | ASME/ANSI B16.5 |
| Size Range | 1/2" to 3" (NPS 1/2 – NPS 3) |
| Pressure Classes | 150, 300, 600, 900, 1500, 2500 |
| Facing Options | Raised Face (RF), Ring Type Joint (RTJ) |
| Bore Design | Outer bore matches pipe OD, lower bore matches pipe ID |
| Material Grade | ASTM A105, ASTM A350 LF2, ASTM A694 F42-F70 |
| Temperature Range | -29°C to 427°C (-20°F to 800°F) |
Standards & Certifications
Our socket weld flanges comply with multiple international standards:
- ASME/ANSI B16.5 for dimensional requirements
- ASTM A105 for carbon steel material specifications
- ISO 9001:2015 quality management certification
- CE marking for European conformity
- GOST-R certification for Russian markets





Chemical Composition & Mechanical Properties
| Element | Percentage | Property | Value |
|---|---|---|---|
| Carbon | 0.35% max | Tensile Strength | 485 MPa min |
| Manganese | 0.60-1.35% | Yield Strength | 250 MPa min |
| Phosphorus | 0.035% max | Elongation | 22% min |
| Sulfur | 0.035% max | Hardness | 187 HB max |
| Silicon | 0.35% max | Impact Energy | 27J @ 0°C |
Manufacturing Process
Our precision manufacturing process ensures consistent quality:
- Material Selection - Premium carbon steel grades sourced from certified suppliers
- Forging - Hot forging process creates optimal grain structure and strength
- Machining - CNC machining ensures precise socket dimensions and facing
- Heat Treatment - Normalizing process optimizes mechanical properties
- Testing - Comprehensive inspection including dimensional, chemical, and mechanical testing

Surface Finish & Coating Options
We offer multiple surface treatments to meet your application requirements:
- Anti-rust Oil - Standard protection for indoor storage and moderate environments
- Black Lacquer - Enhanced corrosion resistance for general industrial use
- Hot-Dip Galvanizing - Superior protection for harsh outdoor or marine environments
Applications
Carbon steel socket weld flange serves critical functions across multiple industries:
Oil & Gas Industry
- High-pressure instrumented connections
- Small-bore handle channeling systems
- Sampling and infusion points
Petrochemical Processing
- Chemical infusion systems
- Analyzer connections
- High-pressure steam applications
Power Generation
- Boiler instrumented piping
- High-pressure feedwater systems
- Steam inspecting connections

Packaging & Delivery
We guarantee item assurance through proficient packaging:
- Individual plastic caps for spine faces
- Wooden cases for send out shipments
- Moisture-resistant wrapping for ocean freight
- Clear checking and documentation
Standard conveyance timeframes:
- Stock things: 3-5 working days
- Custom orders: 15-25 working days
- Express shipping accessible worldwide
Customization Service
Our building group gives custom-made solutions:
- Non-standard weight ratings
- Special fabric grades
- Custom confronting types
- Unique dimensional requirements
- Third-party assessment services
- Special checking and certification
Quality Control
Quality confirmation covers each generation stage:
Incoming Material Control
- Mill test certificate verification
- Chemical composition analysis
- Dimensional inspection
Production Monitoring
- In-process dimensional checks
- Heat treatment verification
- Surface wrap up inspection
Final Testing
- Hydrostatic pressure testing
- Non-destructive examination
- Complete dimensional verification

FAQ
Q1: What is the fundamental contrast between a Attachment Weld and a Slip-On flange?
A: Attachment weld ribs include an inner bear that the pipe sits on with external-only welding, giving prevalent stream characteristics and quality. Slip-on spines require both inside and outside welding with straight bore design.
Q2: Why is the 1/16-inch crevice essential some time recently welding?
A: The 1.6mm extension hole (per ASME B31.1) avoids weld splitting by permitting warm development amid welding. The pipe ought to be sponsored out from the attachment bear some time recently welding.
Q3: Why are attachment weld spines restricted to 3-inch pipes?
A: For bigger breadths, filet weld stresses gotten to be troublesome to oversee. Weld neck spines give more grounded, more inspectable joints for channels over 3 inches.
Q4: Can attachment weld spines handle destructive service?
A: They perform well in most applications, but hole erosion may happen in exceedingly destructive situations. Consider weld neck choices for extreme destructive conditions.
Q5: What review strategies work best for attachment weld connections?
A: Whereas X-ray assessment is challenging for filet welds, Magnetic Particle Testing and Dye Penetrant Testing viably confirm surface astuteness.
Contact Us
Ready to discuss your carbon steel socket weld flange requirements? Contact our technical team at admin@jsfittings.com for expert consultation and competitive quotations.
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