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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EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Flange Product Information
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EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Flange Synonyms
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EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Product Information
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**Product Name:** EN S235J0 Structural Steel, Hot Rolled, Quality Grade
**Overview:**
EN S235J0 is a **standard non-alloy structural steel** belonging to the S235 strength class, defined by the European standard EN 10025-2. While it is categorized under general structural steels and typically features a moderate manganese content, it is **not technically classified as a "High Manganese" steel** when compared to grades like S275 (1.0145) or S355 (1.0570) and their high-manganese variants. The designation "J0" specifies its quality level, guaranteeing impact toughness at **0°C**. It is a fundamental, cost-effective material for general construction, offering good weldability and formability in the hot-rolled condition.
**Key International Standards:**
* **Primary Standard:** **EN 10025-2:2019** - Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels.
* **Grade & Quality Designation:** **S235J0**
* **S:** Structural Steel.
* **235:** Minimum yield strength in MPa (for nominal thickness ≤ 16mm).
* **J0:** Quality designation indicating impact energy testing at **0°C**.
* **Important Note:** The term "High Manganese" in the context of EN steels is typically reserved for grades where the Mn content is a defining feature for enhanced properties (often with Mn max >1.50%). For S235, the Mn content is standard. The correct classification is **Non-Alloy Quality Steel**.
* **Equivalents & Comparisons:**
* **ASTM:** A36 (closest general-purpose equivalent, though chemistry and testing differ).
* **JIS:** SS400 (general comparison).
* **GB/T:** Q235B (similar strength, impact at +20°C).
**Chemical Composition (Ladle Analysis, % by weight, maximum values per EN 10025-2):**
Standard composition for weldability and formability.
* **Carbon (C):** ≤ **0.17%**
* **Manganese (Mn):** ≤ **1.40%** (Standard content, not classified as "high").
* **Phosphorus (P):** ≤ **0.035%**
* **Sulphur (S):** ≤ **0.035%**
* **Nitrogen (N):** ≤ **0.012%** (for killed steel)
* **Silicon (Si):** ≤ **0.035%** (for non-killed or rimmed steel).
**Physical & Mechanical Properties (for hot-rolled condition, thickness ≤ 16mm):**
* **Yield Strength (ReH):** ≥ **235 MPa** (Minimum, thickness-dependent).
* **Tensile Strength (Rm):** **360 - 510 MPa**.
* **Elongation at Break (A5):** ≥ **26%** (Minimum, longitudinal test piece).
* **Impact Energy (KV):** **≥ 27 J at 0°C** (Longitudinal, Charpy V-notch). This is the key property differentiating J0 from the base JR quality.
* **Density:** **~7.85 g/cm³**.
* **Modulus of Elasticity:** **210 GPa**.
* **Poisson's Ratio:** **0.3**.
**Product Features:**
1. **Good Low-Temperature Toughness (J0 Quality):** Guaranteed impact resistance at 0°C makes it suitable for outdoor structures in temperate climates where occasional sub-zero temperatures occur, offering an improvement over the basic S235JR (+20°C impact).
2. **Excellent Weldability:** Very low carbon equivalent allows for easy welding with all standard methods without pre-heating in most cases, even in thicker sections.
3. **Superior Formability:** Excellent for cold bending, punching, and shearing due to its low strength and good ductility.
4. **Cost-Effective Foundation:** The most economical quality structural steel grade with guaranteed low-temperature toughness, providing a safety margin for dynamic or cold-environment applications over S235JR.
**Typical Applications:**
S235J0 is widely used in general and light structural applications where basic toughness at low temperatures is required:
* **General Construction:** Secondary structural elements, purlins, girts, bracings, and frames for industrial halls, warehouses, and agricultural buildings in colder regions.
* **Light Bridges & Walkways:** Components for footbridges, access platforms, and utility structures.
* **Vehicle Bodies & Trailers:** Frameworks for truck bodies, trailers, and container components.
* **General Fabrication:** Staircases, railings, support frames, and machinery guards.
* **Metal Buildings:** Cold-formed sections and light structural supports.
**Available Forms & Processing:**
* **Forms:** Hot-rolled sheets, plates, strips, bars (round, flat, square), and all common structural sections (beams, channels, angles).
* **Surface:** Typically supplied with mill scale. Can be shot blasted or primed.
* **Processing:** Excellent for all cutting, welding, and forming operations. It is one of the easiest steels to fabricate.
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**Clarification & Procurement Note:**
It is crucial to correct the terminology: **EN S235J0 is not a "High Manganese" steel**. It is a **standard non-alloy quality structural steel** with a guaranteed **impact toughness at 0°C**. The mechanical properties, especially yield strength, are thickness-dependent (e.g., for plates >40mm, the min. yield strength is reduced). For applications requiring higher strength or significantly lower service temperatures, grades like **S355J2** (impact at -20°C) or fine-grained steels (**S355NL/ML**) should be considered. Always specify the full designation "S235J0" to ensure the correct quality is supplied.
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EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5805 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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EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Properties
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Applications of EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Chemical Identifiers EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Packing of EN S235J0 High Manganese, Structural, Hot Rolled, Quality Steel Flange
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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 2276 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
