ASTM A182 & DIN EN 10222-2 Alloy Steel Flanges – Engineered for Critical Service

ASTM A182 & DIN EN 10222-2 Alloy Steel Flanges – Engineered for Critical Service​ Product Introduction:

TOBO offers a comprehensive range of Alloy Steel Flanges manufactured to the rigorous requirements of ASTM A182 (USA) and DIN EN 10222-2 (Germany). These flanges are specifically designed for high-temperature and high-pressure service environments, delivering exceptional mechanical strength and corrosion resistance. Produced under strict quality management systems, each component is forged, heat-treated, and machined to precise dimensional tolerances. TOBO’s commitment to material traceability and certified testing ensures that every flange meets the demanding specifications of global energy, chemical, and heavy industrial projects.

1. Product Description
   These flanges are forged from chromium-molybdenum and other alloy steel grades, providing excellent creep resistance and oxidation stability at elevated temperatures. Available configurations include long weld neck, orifice, reducing, and lap joint types, with facing options such as raised face, ring-type joint, and flat face to suit various sealing requirements.

2. Key Parameters
   Material specifications cover ASTM A182 Grades F1, F2, F5a, F11 Class 2, F22 Class 3, and F91. Pressure ratings comply with ASME B16.5 Class 150 through Class 2500 and DIN EN 1092-1 PN16 to PN160. Size range extends from DN15 to DN1200 (½″ to 48″), with custom bore sizes and special facing dimensions available for engineered-to-order applications.

3. Applications
   Ideal for high-temperature transfer lines in refineries, hydrocrackers, heat exchanger connections, and boiler systems. They are also extensively used in syngas plants, ethylene cracking units, and superheater sections where material integrity under sustained thermal cycling is paramount.

4. Advantages
   TOBO employs advanced forging techniques and controlled cooling cycles to achieve uniform grain structure and eliminate internal defects. Each flange is accompanied by EN 10204 3.1 certification with full chemical and mechanical test reports. Third-party inspection services, including positive material identification and ferrite testing, are readily supported to meet project-specific requirements.

5. Functions
   These flanges serve as critical connection points that absorb system stress while maintaining a reliable seal under fluctuating pressure and temperature conditions. Their alloy composition ensures resistance to hydrogen attack, sulfidation, and thermal fatigue, significantly extending service intervals and enhancing overall system safety.

Payment & Invoicing

First-Time Clients: 50% advance payment, 50% balance before shipment. Strategic Clients: 30% advance, 70% payment against copy of Bill of Lading. Long-Term Agreements: 60-day credit terms available (subject to credit approval). Invoicing: 13% VAT Special Invoice provided; FORM A Certificate of Origin for exports. fication System: Laser marking includes material code, pressure rating, and flow direction arrows.

FAQ

1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the Alibaba certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.