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 S235JRC High Manganese, Structural, Hot Rolled, Quality Steel Flange, 16 mm < t < 25 mm Product Information
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EN S235JRC High Manganese, Structural, Hot Rolled, Quality Steel Flange, 16 mm < t < 25 mm Synonyms
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EN S235JRC High Manganese, Structural, Hot Rolled, Quality Steel, 16 mm < t < 25 mm Product Information
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**Product Name:** EN S235JRC Structural Steel for Cold Forming, Hot Rolled, Base Material, Thickness 16 mm < t < 25 mm
**Overview:**
EN S235JRC is a **specialized non-alloy structural steel** defined under the EN 10025-2 standard. It belongs to the S235 strength class and is distinguished by the supplementary designation **"C"**, which signifies that the steel is **intended for cold forming** and has a chemical composition optimized for this purpose. Supplied in the hot-rolled condition, it provides a crucial combination of adequate base strength, guaranteed room-temperature toughness, and **superior cold workability**. This product is specified for the thickness range **>16 mm to ≤25 mm**, a common range for heavier cold-formed plates and sections. It is **not a "High Manganese" steel**; its defining feature is enhanced formability, not elevated manganese content.
**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:** **S235JRC**
* **S:** Structural Steel
* **235:** Minimum yield strength in MPa for nominal thickness ≤ 16mm (derated for this thickness range).
* **JR:** The basic quality designation. Impact tested at **Room Temperature (+20°C)**.
* **C:** **Crucial supplementary designation** for **steels intended for cold forming**. This mandates stricter chemical limits.
* **Clarification:** This is a **Base Material with a special purpose**. The "C" elevates it from a general-purpose S235JR to a fabrication-optimized grade, but it retains the basic JR toughness level. The term **"High Manganese" is incorrect and misleading**; its premium lies in controlled chemistry for forming.
* **Common Equivalents:** There is no direct universal equivalent. The "C" requirement is specific to EN standards. It can be compared to **ASTM A36 with supplemental cold bending requirements**, but chemistry differs.
**Chemical Composition (Ladle Analysis, % by weight, maximum values for thickness >16mm - 40mm, per 'C' grade rules):**
The composition is tailored for ductility and reduced risk of cracking during cold work.
* **Carbon (C):** ≤ **0.17%** (Often aimed at the lower end for better formability).
* **Manganese (Mn):** ≤ **1.40%** (Standard, not elevated).
* **Phosphorus (P):** ≤ **0.030%** (***Key Differentiator:*** Tighter than the 0.045% limit for standard S235JR. Reduces "cold shortness").
* **Sulphur (S):** ≤ **0.030%** (***Key Differentiator:*** Tighter than the 0.045% limit for standard S235JR. Improves ductility and edge formability).
* **Nitrogen (N):** ≤ **0.014%**.
* **Note:** The significantly lower maximum limits for Phosphorus and Sulphur are the defining chemical features that enable its superior cold forming performance.
**Physical & Mechanical Properties (for hot-rolled condition, thickness >16mm to ≤25mm):**
* **Yield Strength (ReH):** ≥ **235 MPa** (Minimum guaranteed value for this thickness range. The yield point is typically well-defined and consistent, which is beneficial for forming).
* **Tensile Strength (Rm):** **360 - 510 MPa**.
* **Elongation at Break (A5):** ≥ **25%** (Minimum, longitudinal test piece. Expected to be good due to favorable chemistry).
* **Impact Energy (KV):** ≥ **27 J at +20°C** (Longitudinal, Charpy V-notch). **No toughness guarantee below +20°C**.
* **Cold Formability:** **Excellent.** The primary feature. The steel is certified to undergo significant cold deformation (bending, roll-forming, punching) in this thickness range with a **markedly reduced risk of cracking** at the edges or in the bend zone compared to standard S235JR.
* **Density:** **7.85 g/cm³**.
**Product Features:**
1. **Optimized for Cold Forming (Primary Feature):** The "C" chemistry ensures the material can withstand more severe cold bending and forming operations without failure, reducing scrap rates in fabrication shops.
2. **Maintained Base Strength & Weldability:** Retains the 235 MPa yield strength (for this thickness) and the excellent weldability of the S235 family. Pre-heating is generally not required.
3. **Cost-Effective for Fabrication:** While potentially slightly more expensive than standard S235JR, it can lead to overall cost savings by improving production yield and allowing for more complex formed shapes.
4. **Predictable Behavior:** Provides consistent and reliable performance during press-brake operations.
**Typical Applications (for thickness 16-25mm):**
S235JRC is specified where heavier-gauge material requires significant cold working.
* **Heavy Fabrication:** **Press-braked brackets, stiffeners, chassis components, and support frames** that require tight bend radii.
* **Construction & Infrastructure:** **Cold-formed base plates, column shoes, and connection plates** that are bent to shape after cutting.
* **Transportation Equipment:** **Heavier cold-formed parts for trailer undercarriages, body supports, and container corner fittings**.
* **Industrial Machinery:** **Guards, housings, and frames** that are formed from plate.
* **Material Handling:** **Components for heavy-duty racking and shelving systems**.
**Available Forms & Processing (for thickness 16-25mm):**
* **Forms:** Primarily supplied as **hot-rolled plates** and **flat bars** within this thickness range.
* **Surface:** Typically with mill scale. Can be shot blasted to improve surface condition for painting or further processing.
* **Processing:** **Ideal for shearing, punching, and especially press-brake bending.** Also perfectly weldable. May be supplied as "pickled and oiled" for critical forming applications.
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**Critical Selection & Procurement Note:**
* **Specification is Key:** You **must** specify **"S235JRC"** to obtain the cold-forming grade. Ordering "S235JR" will deliver standard material with higher P and S, which is more prone to cracking during aggressive forming.
* **Temperature Limitation:** Like all JR grades, it is **not suitable** for service temperatures below **0°C** under dynamic loading. For cold-formed parts in cold environments, consider **S235J0C**.
* **Not "High Manganese":** Do not use this term. Its value proposition is **"Cold-Formable Base Structural Steel."**
* **Thickness-Strength:** Confirm that the minimum yield strength of 235 MPa is acceptable for the design in this specific thickness range.
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EN S235JRC High Manganese, Structural, Hot Rolled, Quality Steel, 16 mm < t < 25 mm Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5813 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 S235JRC High Manganese, Structural, Hot Rolled, Quality Steel, 16 mm < t < 25 mm Properties
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Applications of EN S235JRC High Manganese, Structural, Hot Rolled, Quality Steel Flange, 16 mm < t < 25 mm
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Chemical Identifiers EN S235JRC High Manganese, Structural, Hot Rolled, Quality Steel Flange, 16 mm < t < 25 mm
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Packing of EN S235JRC High Manganese, Structural, Hot Rolled, Quality Steel Flange, 16 mm < t < 25 mm
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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 2284 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
