Product Overview
Our A182 F52 duplex steel flanges conform to ASTM A182 and boast a tensile strength of 700-850 MPa, significantly higher than 304 stainless steel flanges.
Key Details
They are ideal for offshore oil rigs or chemical processing plants. For wholesalers, this means you can supply products to customers who require both strength and corrosion resistance without paying the high price of super-duplex steel.
We offer two primary surface finishes: pickled (per ASTM A380) to remove forge scale and enhance corrosion resistance, and a 2B rolled finish for general use.
Our machining process is precise: bolt holes are CNC-drilled. Each flange undergoes magnetic particle inspection (per ASTM E709) to check for surface cracks, and we also add plastic edge guards to prevent damage during shipping.
As a Chinese manufacturer with experience serving European marine and industrial clients, we operate a dedicated forging line and CNC machining center with an annual production capacity of 3,200 tons. Our raw materials undergo a vacuum arc remelting (VAR) process and are tested using our in-house optical emission spectrometer (OES).
Our warehouse holds 800-1,000 tons of inventory, covering sizes from 1 inch to 24 inches and pressure ratings from 150 to 2500. With constantly updated inventory and a 5-day shipping time for in-stock flanges, we can meet your clients' tight project deadlines.
Orders over 40 tons receive a 6% discount, plus free pickling and 20% off ocean shipping costs.
Our guarantee: If any A182 F52 duplex steel flange fails to meet ASTM A182 mechanical standards, we will replace it within 6 days and refund all shipping costs. We also lock in pricing for 45 days on confirmed orders, protecting you from market fluctuations.
Material Grade
F53 (Duplex2507, UNS S32750; EN 1.4410), super duplex stainless steel with 22-26% Chromium, 5-8% Nickel, 2.5-4% Molybdenum, 0.15 Nitrogen
Technical Specifications
| Parameter | Value |
|---|---|
| Mechanical Properties | Tensile Strength ≥700MPa, Yield Strength ≥550MPa, Elongation ≥25%, Hardness ≤310 HB |
| Specifications | Nominal Diameter: DN10-DN2000 (custom sizes available); Pressure Rating: Class 150-2500, PN16-PN100 |
| Compliance Standards | Conforms to ASTM A182/A182M (material), ASME B16.5, ASME B16.47, EN 1092-1 (dimensions) |
| Inspection Standards | Passes ASTM E165 (Liquid Penetrant Testing), ASTM E709 (Magnetic Particle Testing) |
| Service Type | Custom Cutting |
| Cut to specific dimensions with precision of ±0.5mm | Flange Forming |
| Available in types: Slip-On, Weld Neck, Socket Weld, Threaded, etc. | Surface Treatment |
| Pickling passivation, polishing (Ra≤0.8μm), sandblasting (enhances corrosion resistance) | Welding Service |
| TIG welding process ensures weld joints match base material's mechanical properties | Non-Destructive Testing |
| Ultrasonic Testing (UT), Radiographic Testing (RT) post-processing | Identification Marking |
| Laser marking for specifications, material grade, standards (for traceability) | |
Frequently Asked Questions
Q: Can you share some of your customer references or case studies?
Sure, we can share case studies of customers in your industry (e.g., oil & gas, construction) while protecting their privacy.
Q: What is your policy for product returns or replacements?
If products have quality issues caused by us, we'll arrange replacements or refunds within 30 days of receipt.
Q: Can you provide a certificate of origin (CO) for customs clearance?
Yes, we can provide CO, as well as other documents like commercial invoices and packing lists required for customs.
