Prime-Quality ASME SA106,ASME SA210,ASME SA213,ASME SA335,En10216,DIN17175 Pipe Fittings Seamless Steel Flanges a/SA106 Gr.B,P195gh,P235gh,P265gh,St35.8,St45.8

• Customization: Available
• After-sales Service: 24h Online
• Type: Seamless/Welded
• Model NO.: A/SA106 Gr.B,P195GH,P235GH,P265GH,St35.8,St45.8
• Technique: Hot/Cold Rolled,Cold Draw,ERW,Saw,Efw,Extrude
• Material: Carbon,Stainless,Alloy
• Surface Treatment: Black/Varnishing/Polished/Oiled/Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Payment: T/T, L/C
• Certificate: CCS, ABS, BV API, ISO9001
• Thickness: Customizable
• Length: Customizable
• Width: Customizable
• Delivery: at Stock or 7-15 Days According to The Quantity
• Grade: a/SA106 Gr.B,P195gh,P235gh,P265gh,St35.8,St45.8
• MOQ: Low MOQ
• Quality Control: 100% Inspection
• Secondary or Not: Non-Secondary
• Sample: Provide
• Transport Package: Neutral Standard Export Seaworthy Packing
• Specification: As customer′s requirement
• Trademark: TONGNO
• Origin: Wuxi China
• HS Code: 73072100
• Production Capacity: 200000 Ton/Year

Product Description

Product Description

A pipe flange is a disc-shaped piping component used to connect pipes, valves, pumps, and other equipment in a piping system.

Pipe flanges are indispensable in modern piping systems, offering versatility across industries.  Proper selection based on pressure, temperature, material, and application ensures long-term reliability.  Advances in gasket technology (e.g., spiral wound, RTJ) and smart flange monitoring systems continue to enhance performance in critical services.

1. Types of Flanges

1.1 By Connection Design

• Weld Neck Flange (WN) - High-strength, butt-welded for critical applications

• Slip-On Flange (SO) - Easy installation, fillet-welded for moderate pressure

• Socket Weld Flange (SW) - Compact, for small-bore high-pressure piping

• Lap Joint Flange (LJ) - Used with stub ends for easy alignment

• Threaded Flange - Screwed onto pipes without welding

• Blind Flange - Closes pipe ends for pressure testing or future expansion

1.2 By Facing Type

• Flat Face (FF) - For low-pressure applications

• Raised Face (RF) - Most common, improves gasket compression

• Ring-Type Joint (RTJ) - Metal-to-metal seal for high-pressure/temperature

• Tongue & Groove (T&G) - Precision alignment in critical systems

1.3 Specialized Flanges

• Orifice Flanges - For flow measurement

• Expander/Reducer Flanges - Adjust pipe diameter

• Spectacle Blind Flanges - Isolate sections for maintenance

 

2. Common Materials

• Carbon Steel (ASTM A105) - General industrial use

• Stainless Steel (ASTM A182 F304/316) - Corrosion resistance

• Alloy Steel (ASTM A182 F11/F22) - High-temperature service

• Duplex Steel (UNS S31803/S32205) - Chloride environments

• Nickel Alloys (Inconel, Monel, Hastelloy) - Extreme corrosion/heat

• PVC/FRP - Chemical processing at lower pressures

 

3. Key Applications

3.1 Oil & Gas Industry

• Pipeline connections

• Wellhead assemblies

• Refinery process piping

3.2 Chemical & Petrochemical Plants

• Reactor/vessel connections

• Acid/alkali transport systems

3.3 Power Generation

• Steam turbine connections

• Boiler feedwater systems

3.4 Water & Wastewater Treatment

• Pump station piping

• Large-diameter water mains

3.5 Shipbuilding & Offshore

• Seawater cooling systems

• Hydraulic piping

 

4. Selection & Installation Considerations

4.1 Design Factors

• Pressure Rating (e.g., ASME Class 150, 300, 600, 900, 1500, 2500)

• Temperature Resistance

• Fluid Compatibility (corrosion/erosion risks)

4.2 Installation Best Practices

• Proper Gasket Selection (e.g., spiral wound, PTFE, graphite)

• Bolt Torque Sequencing to ensure even compression

• Alignment Checks to prevent flange warping

• Post-Weld Heat Treatment (PWHT) for carbon steel in critical service

 

5. Standards & Compliance

• ASME B16.5 - Standard for pipe flanges up to 24"

• ASME B16.47 - Large-diameter flanges (Series A/B)

• API 6A - Wellhead and Christmas tree flanges

• EN 1092-1 - European flange standards

 

6. Maintenance & Inspection

• Leak Testing (hydrostatic/pneumatic)

• Bolt Retorquing after initial operation

• Corrosion Monitoring (CUI, pitting)

• Ultrasonic Testing (UT) for crack detection

Detailed Photos

 

Certifications

Packaging & Shipping

1.Export sea worthy package + water proof paper
2.Safe loading and fixing Professional teams

Delivery Detail: within 7-10 working days after receiving the deposit or according to your order quantity.

Company Profile

Wuxi Tongno Special Steel Co., Ltd. was founded in 2013, the registered capital of 5 million yuan, for the professional production of seamless steel pipe manufacturing enterprises; after years of rapid development, Wuxi Tongno Special Steel Co., Ltd. now has three types of seamless steel pipe production line;

Wuxi Tongno Special Steel Co., Ltd. has been adhering to the 'quality first, customer first' business philosophy, to ensure that the products of high-precision, wide range of wall thicknesses, small quantities of many varieties, fast-paced characteristics of the production, sales in the domestic advanced level, especially in the small-diameter medium-thick-walled and large-calibre thin-walled alloy seamless steel pipe production at the domestic advanced level. Products at home and abroad enjoy a reputation for a variety of project construction, play their own characteristics of manufacturing energy.

Our Advantages

1. Exceptional Service: We guarantee a response to all inquiries within 12 hours.

2. Certifications: Proudly holding ISO 9001, CE, and SGS certifications.

3. Cost - Effective Quality: Benefit from competitive prices and top - notch quality, as our products are directly sourced from our own factory.

4. Robust Production Capacity: With a monthly output of 20,000 tons, we ensure seamless production.

5. Flexible Payment Terms: We accept various payment methods, including T/T and L/C.

6. Swift Delivery & Standard Export Packaging: Expect quick delivery and products packaged in line with international export standards.

7. Factory - Direct Advantage: Our own factory enables us to offer competitive prices without compromising on quality.

8. Third - Party Testing: We welcome any third - party testing to verify the quality of our products.

9. Expert Team Support: Backed by a professional sales team and a reliable factory.

10.Dedicated to Customization: Your individual specifications are not just accepted-they're the cornerstone of our service. We're committed to delivering on every customized request.

FAQ

Q1: What are your primary product offerings?

A1: We are a leading manufacturer and supplier of high-quality steel products, specializing in:
Stainless Steel & Carbon Steel: Sheets/plates, coils, and pipes/tubes (both seamless and welded)
Structural Components: Various bar profiles (round, square, hexagonal, flat, angle), C-channels, and H/I-beams
Custom Fabrications: Tailored solutions to meet specific project requirements

Q2: What quality assurance measures do you have in place?

A2: We maintain stringent quality control through:
Comprehensive Mill Test Certificates provided with all shipments
Optional third-party inspection services (SGS, BV, etc.)
ISO-certified manufacturing processes
Rigorous in-house testing and quality checks

Q3: What are your standard packaging terms?

A3: Our standard packaging includes:
Bundled or coiled goods secured with steel rods/straps
Custom packaging solutions available per customer specifications
Export-grade packaging to ensure optimal protection during transit

Q4: What is your typical delivery timeline?

A4: We offer flexible delivery options:
Stock items: Ready for shipment within 3 business days after deposit confirmation
Made-to-order items: Production typically completed within 7-15 working days post-deposit
Expedited options available for urgent requirements

Q5: What competitive advantages does your company offer?

A5: We differentiate ourselves through:
A team of highly skilled professionals and technical experts
Industry-leading pricing without compromising quality
Unparalleled after-sales support and customer service
Extensive inventory and reliable supply chain management

Q6: Do you provide product samples?

A6: Yes, we're pleased to offer:
Complimentary small samples from existing inventory
Customer only responsible for shipping costs
Custom samples available for specific project needs

Q7: What are your payment terms?

A7: Our standard payment structure:
30% advance payment via T/T to initiate production/order
Remaining 70% balance due prior to shipment
Full documentation including product photos and packaging details provided before final payment
 

Why Choose Us?

√ Quality Assurance: Rigorous testing and certification
√Competitive Pricing: Cost-effective solutions without compromise
√ Reliable Delivery: On-time fulfillment guaranteed
√ Custom Solutions: Tailored to your exact specifications
√ Expert Support: Technical guidance at every stage
For further inquiries or specific requirements, please contact our sales team. We're committed to providing exceptional service and top-quality steel products for your projects.