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® 45N 22Cr 3Mo Duplex Stainless Steel Flange with PREN = 33 or 34 Product Information
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InduSteel Flange URANUS® 45N 22Cr 3Mo Duplex Stainless Steel Flange with PREN = 33 or 34 Synonyms
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Industeel URANUS® 45N 22Cr 3Mo Duplex Stainless Steel with PREN = 33 or 34 Product Information
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**Product Name:** Industeel URANUS® 45N (22Cr-3Mo Duplex Stainless Steel, PREN = 33-34)
**Introduction:**
Industeel URANUS® 45N is a high-performance, **standard (or "classic") duplex stainless steel** engineered to deliver an exceptional balance of **high strength, superior corrosion resistance, and excellent cost-effectiveness**. With a typical Pitting Resistance Equivalent Number (PREN) of 33-34, it provides outstanding resistance to chloride-induced stress corrosion cracking (SCC), pitting, and crevice corrosion, positioning it as a direct and often superior alternative to common austenitic grades like 316L and 317L. It represents the industry workhorse for demanding environments where reliability, longevity, and structural efficiency are paramount.
**Key Features:**
* **Exceptional Strength-to-Weight Ratio:** Yield strength is **over double that of standard austenitic stainless steels (e.g., 316L)**, enabling significant weight reduction, thinner sections, and lower lifetime costs for pressure vessels and structures.
* **Superior & Proven Corrosion Resistance:** Excellent resistance to chloride stress corrosion cracking (SCC) and robust resistance to pitting and crevice corrosion in a wide range of aggressive media, including seawater, chemical process streams, and acidic brines.
* **Excellent Fabricability & Weldability:** Designed for reliable welding and forming using industry-standard practices, with a well-established portfolio of matching filler metals (e.g., 22.9.3.L type).
* **Optimal Lifecycle Cost:** Offers the best value proposition within the duplex family, bridging the gap between standard stainless steels and more expensive super duplex or nickel alloys for countless applications.
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**1. Chemical Composition (Typical Weight % - Industeel Specification)**
The composition is optimized for a stable, balanced austenite-ferrite microstructure and consistent performance.
| Element | Content (%) | Element | Content (%) |
| :------------- | :------------ | :------------- | :---------- |
| Chromium (Cr) | 22.0 - 23.0 | Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo)| 3.0 - 3.5 | Nitrogen (N) | 0.14 - 0.20 |
| Manganese (Mn) | ≤ 2.0 | Copper (Cu) | ≤ 0.20 |
| Silicon (Si) | ≤ 1.00 | Carbon (C) | ≤ 0.030 |
| Phosphorus (P) | ≤ 0.035 | Sulfur (S) | ≤ 0.015 |
| **Iron (Fe)** | **Balance** | | |
**PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) = **33 - 34**
*(This aligns it directly with the premium UNS S32205 specification.)*
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**2. Physical & Mechanical Properties (Typical at Room Temperature - Solution Annealed)**
| Property | Value / Range |
| :-------------------------------------------- | :-------------------------------- |
| Density | 7.80 g/cm³ |
| Melting Range | 1380 - 1445 °C |
| Specific Heat Capacity (20°C) | 500 J/kg·K |
| Thermal Conductivity (20°C) | 19 W/m·K |
| Coefficient of Thermal Expansion (20-100°C) | 13.7 x 10⁻⁶ /K |
| Modulus of Elasticity | 200 GPa |
| **Tensile Strength (Rm)** | **700 - 900 MPa** |
| **Yield Strength (Rp0.2)** | **≥ 500 MPa** |
| **Elongation (A in 50mm)** | **≥ 25 %** |
| Hardness (Brinell) | 240 - 290 HBW |
| **Impact Toughness (Charpy V-notch, min.)** | **≥ 100 J at -40°C** |
| Maximum Recommended Service Temperature (for structural integrity) | ≈ 300°C |
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**3. Product Forms & Applications**
**Available Product Forms:**
* Plate and Sheet
* Hot Rolled and Cold Drawn Bar
* Seamless and Welded Pipe & Tube
* Forgings and Fittings
**Primary Applications:**
URANUS® 45N is the quintessential duplex grade for severe environments across major industries:
* **Oil & Gas Industry:** Production tubing, flowlines, separators, heat exchangers, and pressure vessels in offshore, subsea, and sour (H₂S) service. Fully compliant with **NACE MR0175/ISO 15156** standards for sour service.
* **Chemical & Petrochemical Processing:** Reactors, columns, tanks, and piping for chlorides, organic acids, and aggressive chemical media.
* **Pulp & Paper Industry:** Digester impregnation vessels, bleach plants, and liquor handling systems.
* **Marine & Offshore:** Seawater cooling systems, pumps, valves, propellers, and deck equipment.
* **Desalination & Water Treatment:** High-pressure reverse osmosis (RO) membranes, piping, and pumps in multi-stage flash (MSF) and RO plants.
* **Pollution Control:** Flue gas desulfurization (FGD) scrubbers, ducting, and absorber towers.
* **Chemical Tankers:** Cargo tanks and unloading systems.
* **Architecture & Construction:** Structural components, bridges, and façades in highly corrosive coastal and industrial atmospheres.
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**4. International Standards & Approvals**
URANUS® 45N is equivalent to the globally recognized premium duplex grade UNS S32205.
| Standard Type | Standard Number & Designation | Notes |
| :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- |
| **Unified Numbering System (UNS)** | **S32205** (Primary equivalent) | The premium duplex designation with guaranteed high Mo and N content. |
| **EN / EURONORM (Europe)** | **1.4462** (Common material number) | The standard European designation for 22% Cr duplex grades. |
| | EN 10088-2: Sheet/Plate
EN 10216-5: Seamless pressure tubes
EN 10253-4: Butt-welding fittings | |
| **ASTM (USA)** | **ASTM A240** (Plate/Sheet/Strip)
**ASTM A790/A789** (Pipe & Tube)
ASTM A182 (Forgings & Fittings)
ASTM A276 (Bar) | The primary procurement standards; S32205 is the dominant specification. |
| **NACE MR0175 / ISO 15156** | **Fully Compliant** | Approved for sour service (H₂S environments) within defined environmental and hardness limits (typically ≤ 32 HRC). |
| **ASME Boiler & Pressure Vessel Code** | **Section II, Part A** (SA-240, SA-789, etc.) | Approved for use in pressure-retaining equipment. |
| **Other Standards** | JIS G4304 / G4305 (Japan) - SUS 329J3L
GB/T 20878 (China) - 022Cr22Ni5Mo3N
AS 4677 (Australia) - 2205 | Widely adopted in national standards. |
**Important Technical & Procurement Note:**
Industeel URANUS® 45N is a proprietary product name that conforms to the international standard for UNS S32205 / EN 1.4462. For procurement, it is essential to specify compliance with these standard designations (e.g., ASTM A240 S32205) to guarantee the published properties. Material must be supplied in the **solution annealed and quenched condition**. All welding must use qualified procedures with appropriate duplex consumables (e.g., AWS A5.9 ER2209) to preserve corrosion resistance. Always require a **certified material test report (CMTR)** from the manufacturer.
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Industeel URANUS® 45N 22Cr 3Mo Duplex Stainless Steel with PREN = 33 or 34 Specification
Dimensions
Size：
Diameter 20-1000 mm Length <7274 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® 45N 22Cr 3Mo Duplex Stainless Steel with PREN = 33 or 34 Properties
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Applications of InduSteel Flange URANUS® 45N 22Cr 3Mo Duplex Stainless Steel Flange with PREN = 33 or 34
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Chemical Identifiers InduSteel Flange URANUS® 45N 22Cr 3Mo Duplex Stainless Steel Flange with PREN = 33 or 34
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Packing of InduSteel Flange URANUS® 45N 22Cr 3Mo Duplex Stainless Steel Flange with PREN = 33 or 34
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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 3745 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
