1,We Manufacturing processes are primarily classified into four types:
1:Forging,
2:Casting,
3:Cutting,
4:Rolling.
2,We can manufacture in accordance with these standards.
Standards:
GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards).
Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others.
The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160.
The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500.
Flange Classification
1. **According to Chemical Industry Standards:** Flanges are classified as follows:
Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)).
2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows:
Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation).
3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows:
Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange.
4. **According to Connection Method/Type:** Flanges are classified as follows:
Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc.
5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges.
6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges.
A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts."
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InduSteel Flange URANUS® 52N+ 25 Cr Super Duplex Stainless Steel Flange with PREN = 40 Product Information
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InduSteel Flange URANUS® 52N+ 25 Cr Super Duplex Stainless Steel Flange with PREN = 40 Synonyms
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Industeel URANUS® 52N+ 25 Cr Super Duplex Stainless Steel with PREN = 40 Product Information
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**Product Name:** Industeel URANUS® 52N+ (25% Cr Super Duplex Stainless Steel, PREN ≥ 40)
**Introduction:**
Industeel URANUS® 52N+ is a **premium, hyper-duplex stainless steel** that pushes the boundaries of the duplex family's performance envelope. Representing a **higher-strength evolution** of the 25% Cr super duplex class, it combines an optimized, nitrogen-enhanced alloy composition to achieve a **remarkable synergy of extreme mechanical strength and superior corrosion resistance**. With a Pitting Resistance Equivalent Number (PREN) guaranteed at ≥ 40, it is engineered for the most demanding applications where both **exceptional load-bearing capability** and **uncompromising resistance** to aggressive, chloride-rich environments are simultaneously required, often serving as a more economical alternative to high-strength nickel alloys.
**Key Features:**
* **Ultra-High Mechanical Strength:** Delivers the highest yield and tensile strength within the standard URANUS® super duplex range, enabling groundbreaking lightweight design and pressure containment capabilities where conventional duplex steels are insufficient.
* **Extreme Corrosion Resistance:** Maintains a PREN ≥ 40, providing outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in environments with high chlorides, acidity, and H₂S.
* **Exceptional Toughness at Low Temperatures:** Maintains high impact toughness even at sub-zero temperatures, making it suitable for cryogenic services and arctic environments.
* **Optimized for Fabrication:** Despite its high strength, the alloy is designed with a balanced composition to maintain good weldability and formability using specialized procedures for super duplex grades.
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**1. Chemical Composition (Typical Weight % - Industeel Enhanced Specification)**
The composition is precisely tuned to achieve a high-strength, corrosion-resistant austenite-ferrite microstructure.
| Element | Content (%) | Element | Content (%) |
| :------------- | :------------ | :------------- | :---------- |
| Chromium (Cr) | 24.0 - 26.0 | Nickel (Ni) | 6.0 - 9.0 |
| Molybdenum (Mo)| 3.0 - 4.5 | Nitrogen (N) | **0.25 - 0.35** |
| Manganese (Mn) | ≤ 1.5 | Copper (Cu) | 0.20 - 1.00 |
| Silicon (Si) | ≤ 0.50 | Carbon (C) | ≤ 0.030 |
| Phosphorus (P) | ≤ 0.030 | Sulfur (S) | ≤ 0.010 |
| Tungsten (W) | 0.50 - 1.50 | | |
| **Iron (Fe)** | **Balance** | | |
**Key Alloying Note:** The **significantly elevated nitrogen (N) content** is the primary driver for its ultra-high strength and stable austenite phase balance. Tungsten (W) further enhances localized corrosion resistance.
**PREN Calculation:** PREN = %Cr + 3.3(%Mo + 0.5%W) + 16(%N) ≥ **40**
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**2. Physical & Mechanical Properties (Typical at Room Temperature - Solution Annealed)**
| Property | Value / Range |
| :-------------------------------------------- | :-------------------------------- |
| Density | 7.80 g/cm³ |
| Melting Range | 1400 - 1450 °C |
| Thermal Conductivity (20°C) | 16 W/m·K |
| Coefficient of Thermal Expansion (20-100°C) | 12.5 x 10⁻⁶ /K |
| Modulus of Elasticity | 200 GPa |
| **Tensile Strength (Rm)** | **900 - 1100 MPa** |
| **Yield Strength (Rp0.2)** | **≥ 650 MPa** |
| **Elongation (A in 50mm)** | **≥ 20 %** |
| Hardness (Brinell) | 290 - 350 HBW |
| **Impact Toughness (Charpy V-notch, min.)** | **≥ 60 J at -40°C** |
| **Critical Pitting Temperature (CPT) - ASTM G48** | **Typically ≥ 70°C** |
| **Critical Crevice Temperature (CCT) - ASTM G48** | **Typically ≥ 45°C** |
| Maximum Recommended Service Temperature | ≈ 250°C (strict thermal history control required) |
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**3. Product Forms & Applications**
**Available Product Forms:**
* Heavy Plate and Structural Sections
* Seamless Pipe & Tube (for high-pressure applications)
* Bar and Wire (for fasteners, shafts)
* Custom Forgings (for demanding components like valves and wellhead parts)
**Primary Applications (Ultra-Demanding Service):**
URANUS® 52N+ is engineered for frontier applications where its unique strength-corrosion balance is critical:
* **Oil & Gas – Ultra-Deepwater/High-Pressure/High-Temperature (HPHT):** Thick-walled production tubing, risers, manifolds, and Christmas trees subject to extreme pressures, low temperatures, and corrosive reservoir fluids.
* **Oil & Gas – Severe Sour & Clad Backing Material:** Components in extremely aggressive H₂S/CO₂/Cl⁻ environments. Also used as a high-strength backing material for explosion-clad vessels.
* **Marine & Offshore – High-Load Components:** Propeller shafts, stern tubes, subsea connector hubs, and mooring system components requiring high strength and seawater corrosion resistance.
* **Chemical Processing – High-Pressure Reactors:** Vessels and piping for processes involving high pressure combined with corrosive media (e.g., urea, acetic acid).
* **Energy & Power:** Shafts and components in advanced geothermal systems and high-pressure seawater cooling circuits.
* **Cryogenic Applications:** Storage and handling equipment for liquefied gases (LNG, etc.) where low-temperature toughness is required alongside corrosion resistance.
* **Fasteners & Bolting:** High-strength bolts for flanged connections in corrosive offshore and subsea environments.
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**4. International Standards & Approvals**
URANUS® 52N+ aligns with the highest-tier super duplex specifications and may exceed standard grade minima.
| Standard Type | Standard Number & Designation | Notes |
| :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- |
| **Unified Numbering System (UNS)** | **S32760** (or similar high-strength variants) / Complies with **S32750** at enhanced levels | May correspond to proprietary grades like ZERON® 100 or SAF 2707 HD™. |
| **EN / EURONORM (Europe)** | Potentially aligns with **1.4501** or supplied to meet key properties of **1.4410 (S32750)** at enhanced strength levels. | Often specified by proprietary name and technical agreement. |
| **ASTM (USA)** | Typically supplied to meet the mechanical and chemical requirements of **ASTM A240 S32750** or similar, with guaranteed higher minima. | The primary reference is the Industeel datasheet, not a generic ASTM grade. |
| **NACE MR0175 / ISO 15156** | **Fully Compliant** (with strict hardness control, typically ≤ 36 HRC) | Qualification for specific sour service conditions is essential. |
| **Specialized Approvals** | **DNV, ABS, Lloyds** for offshore applications.
**PED 2014/68/EU** compliance.
**NORSOK M-630** (Material Data Sheet) approval possible. | Project-specific certification is common. |
| **Key Procurement Specification** | **Proprietary Industeel URANUS® 52N+ Technical Datasheet & Purchasing Specification** | **The definitive and mandatory document** for ordering, defining all enhanced properties and controls. |
**Critical Procurement & Fabrication Note:**
URANUS® 52N+ is a **specialist, high-performance alloy**. Procurement must be based explicitly on the **Industeel URANUS® 52N+ datasheet**. The **Manufacturer's Test Certificate (MTC/CMTR) is paramount** and must include heat-specific data: full chemical analysis (for PREN verification), ferrite content (target ~40-50%), Charpy impact values at specified temperatures, and often corrosion test results (CPT/CCT). **Welding is highly critical** and requires **expert procedures** using **highly over-matching super duplex or nickel-based filler metals** (e.g., ER2594, Ni-alloy 625). Strict control of interpass temperature and heat input is mandatory to avoid deleterious phase precipitation. Pre-qualification of welding procedures is strongly recommended.
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Industeel URANUS® 52N+ 25 Cr Super Duplex Stainless Steel with PREN = 40 Specification
Dimensions
Size：
Diameter 20-1000 mm Length <7277 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
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Industeel URANUS® 52N+ 25 Cr Super Duplex Stainless Steel with PREN = 40 Properties
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Applications of InduSteel Flange URANUS® 52N+ 25 Cr Super Duplex Stainless Steel Flange with PREN = 40
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Chemical Identifiers InduSteel Flange URANUS® 52N+ 25 Cr Super Duplex Stainless Steel Flange with PREN = 40
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Packing of InduSteel Flange URANUS® 52N+ 25 Cr Super Duplex Stainless Steel Flange with PREN = 40
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Standard Packing:
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Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Flange drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3748 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition
