Our industrial steel flanges are designed and drilled in our own workshop using cutting-edge CNC machinery to achieve perfect dimension tolerances and raised, flat, or ring-type joint (RTJ) face shapes. Built mostly from robust forged steel, with select high-precision models machined from bar stock, these connectors provide superior structural durability and exceptional mechanical strength in piping networks.
To meet your exact operations criteria, we offer added convenience on vital accessories like high-grade flange packs, metallic/non-metallic gaskets, and flange connector bolts engineered to surpass SAE J518 and ISO 6162 specifications.
Industrial Steel Flanges Technical Specifications
| Technical Parameter | Standard Range & Production Details |
|---|---|
| Available Sizing Range | 1/2″ (15 NB) up to 48″ (1200 NB) and customized large diameters |
| Pressure Ratings (ANSI) | Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500 (Table D, E, F, H, K, S, T) |
| Pressure Ratings (Metric) | PN6, PN10, PN16, PN25, PN40, PN63, PN64, PN100, PN160, PN250, PN320, PN400 (600kpa to 4000kpa limits) |
| Flange Face Profiles | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) finishes |
| Standard Design Codes | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, API-605, AWWA C207, DIN standards, EN 1092-1, BS 4504, BS 10, GOST 12820 / 12821 |
| Surface Protection Coatings | Anti-rust Paint coating, Blackodised Oil Paint finish, Yellow Transparent paint, Zinc Plating, Cold or Hot Dip Galvanizing |
| Value Added Services | Special CNC Precision Machining, Custom Drilling & Grinding, High Yield Material Sourcing |
| Raw Material Certifications | Mill Test Certificate to EN 10204 3.1, raw material origin tracking, 100% UT/RT radiography test options, Third-Party Auditing |
Available Types of Industrial Steel Flanges
We design and supply various structural configurations to support a wide range of connector environments:
Long tapered neck matching pipe ID, designed for deep pressure stresses and cyclical thermal loads.
Slides over tubes before welding, easy to position, ideal for moderate and standard pressure duties.
Solid steel closure plates without bores, utilized to isolate or block piping line sections.
Paired with a stub end to align bolt loops rapidly, outstanding for lines requiring regular cleaning.
Counter-bore design for inserting smaller pipes, safe and secure joints for minor process tubes.
NPT/BSP threaded connections or custom bore changes designed to join pipes of different widths.
Metallurgy & Standard Manufacturing Materials
We stock and manufacture forged steel components in comprehensive grades:
International Steel Standards & Grade Cross Reference
Compare material classifications as per different international code registries:
| ASTM Code Standard | British Standard Code (BS) | German Code (DIN) | Euronorm Code (EN) |
|---|---|---|---|
| ASTM A182/A240 304 | BS 304S15 | DIN X5 Cr Ni 18 10 | EN 1.4301 |
| ASTM A182/A240 304L | BS 304S11 | DIN X2 Cr Ni 18 9 | EN 1.4307 |
| ASTM A182/A240 316 | BS 316S31 | DIN X5 Cr Ni Mo 17 12 2 | EN 1.4401 |
| ASTM A182/A240 316L | BS 316S11 | DIN X2 Cr Ni Mo 17 13 2 | EN 1.4404 |
| ASTM A182 321 | BS 321S31 | DIN X6 Cr Ni 18 10 | EN 1.4541 |
| ASTM A182 316Ti | BS 320S31 | DIN X6 Cr Ni Mo Ti 17 12 2 | EN 1.4571 |
| ASTM A182 F44/SMO | BS 254SMO | DIN X1 Cr Ni Mo Cu N 20 18 7 | EN 1.4547 |
Quality Testing & Export Packaging Standards
To ensure zero structural faults and perfect dimensional compliance are delivered to our clients, every flange goes through strict tests and inspection routines:
- Comprehensive Non-Destructive Testing (NDT): 100% Radiography, Ultrasonic testing (UT), and Liquid Penetrant inspection Options.
- Third Party Inspection (TPI) Ready: Client-nominated TPI agencies like Bureau Veritas (BVIS), DNV-GL, LLOYDS, ICB, IBR, BARC, and BHEL are welcome.
- Expert Heavy Packaging: Packed in custom-built wooden corrugated boxes foiled in bubble protective wraps. Every block is clearly stamped with Grade, Lot/Heat Number, Size Rating, and Brand Mark to ensure traceablity and zero damages during long sea transit.