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 S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange Product Information
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EN S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange Synonyms
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EN S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Product Information
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**Product Name:** EN S235J0C Structural Steel, Hot Rolled, Quality Grade
**Overview:**
EN S235J0C is a **non-alloy structural quality steel** defined under the European standard EN 10025-2. It belongs to the S235 strength class and is specifically intended for **cold forming applications**. The suffix "C" denotes its primary characteristic: **guaranteed suitability for cold forming**, achieved through stricter controls on chemical composition, particularly lower carbon and phosphorus levels, compared to the standard S235J0 grade. While it is characterized by good ductility, it is **not classified as a "High Manganese" steel** in the technical sense; its manganese content is standard for this strength class. This steel is an optimal choice for components that undergo significant cold working such as bending, punching, or rolling after delivery.
**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:** **S235J0C**
* **S:** Structural Steel.
* **235:** Minimum yield strength in MPa (for nominal thickness ≤ 16mm).
* **J0:** Quality designation, indicating impact energy testing at **0°C**.
* **C:** Supplementary designation for **steels intended for cold forming**.
* **Important Clarification:** The "C" grade should not be confused with "High Manganese" steels. Its key feature is enhanced **cold formability**, not elevated manganese content for strength. Manganese levels are comparable to or slightly lower than standard S235 grades.
* **Equivalents:** There is no direct, universally adopted equivalent in ASTM or other standards, as the "C" requirement is specific to EN. In terms of general purpose and formability, it can be loosely compared to **ASTM A36** or more precisely to steels specified for cold forming in other regional standards.
**Chemical Composition (Ladle Analysis, % by weight, maximum values per EN 10025-2):**
The composition is optimized for maximum ductility and cold forming performance.
* **Carbon (C):** ≤ **0.17%** (Often on the lower end of the range to enhance formability).
* **Manganese (Mn):** ≤ **1.40%** (Standard content for S235; not elevated).
* **Phosphorus (P):** ≤ **0.030%** (Tighter limit than standard S235J0 ≤0.035%, improving cold formability and toughness).
* **Sulphur (S):** ≤ **0.030%** (Tighter limit than standard S235J0 ≤0.035%, improving formability and surface quality).
* **Nitrogen (N):** ≤ **0.012%**.
* **Note:** The combined effect of lower max P and S is a key differentiator from S235J0.
**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, typically higher in practice due to the "C" grade chemistry).
* **Impact Energy (KV):** **≥ 27 J at 0°C** (Longitudinal, Charpy V-notch). This guarantees basic toughness for cold environments.
* **Cold Formability:** Excellent. The steel is specifically supplied with the expectation that it will undergo cold forming operations (bending, folding, rolling) to a greater degree than standard grades without risk of cracking or excessive work hardening.
* **Bending Properties:** Minimum inside bend radii can be lower compared to standard S235J0 for the same thickness.
* **Density:** **~7.85 g/cm³**.
* **Modulus of Elasticity:** **210 GPa**.
**Product Features:**
1. **Superior Cold Formability (Primary Feature):** The "C" designation ensures the steel is chemically optimized and processed to withstand severe cold deformation without failure, making it ideal for press-brake forming, roll-forming, and deep drawing applications.
2. **Guaranteed Low-Temperature Toughness:** Maintains the J0 quality impact resistance at 0°C, providing reliability for outdoor or cold-climate applications.
3. **Excellent Weldability:** Very low carbon equivalent ensures outstanding weldability using all common methods. Pre-heating is generally not required.
4. **Consistent Quality for Fabrication:** Provides predictable and consistent behavior during fabrication, reducing scrap rates and rework in cold-forming intensive production.
**Typical Applications:**
S235J0C is specified where complex shapes are created through cold working:
* **Cold-Formed Structural Sections:** Purlins, girts, channels, and angles produced by roll-forming for building frameworks.
* **Metal Building Systems:** Roof and wall cladding supports, trim, and flashings.
* **Automotive & Transportation:** Frame components, brackets, and supports formed by stamping or press-braking.
* **Storage & Shelving Systems:** Components for heavy-duty racking and storage units that require precise cold bending.
* **General Fabrication:** Brackets, housings, guards, and any part requiring significant bending or forming after cutting.
**Available Forms & Processing:**
* **Forms:** Commonly supplied as **hot-rolled sheet and strip** in coils or cut lengths, which are the primary feedstock for cold-rolling mills. Also available as plates and flat bars.
* **Surface:** Typically with mill scale. Often supplied as pickled and oiled (PO) for cold forming operations to improve tool life and surface finish.
* **Processing:** **Exceptionally suited for cold forming**. Also easily weldable, shearable, and punchable.
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**Procurement & Specification Note:**
It is critical to specify the **full designation "S235J0C"** to obtain the correct grade optimized for cold forming. Simply ordering "S235J0" will not guarantee the tighter phosphorus and sulphur limits. The mechanical properties are thickness-dependent. This grade is a **specialized material for fabrication** rather than a general-purpose structural steel like S235JR. For applications not involving significant cold working, the standard S235J0 may be more cost-effective. The term "High Manganese" is a misnomer for this grade; its defining characteristic is **enhanced cold formability**.
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EN S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5806 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 S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Properties
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Applications of EN S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Chemical Identifiers EN S235J0C High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Packing of EN S235J0C 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 2277 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
