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."
-:-
For detailed product information, please contact sales.
-:
EN S235JR High Manganese, Structural, Hot Rolled, Base Steel Flange, t < 16 mm Product Information
-:-
For detailed product information, please contact sales.
-:
EN S235JR High Manganese, Structural, Hot Rolled, Base Steel Flange, t < 16 mm Synonyms
-:-
For detailed product information, please contact sales.
-:
EN S235JR High Manganese, Structural, Hot Rolled, Base Steel, t < 16 mm Product Information
-:-
For detailed product information, please contact sales.
-:
**Product Name:** EN S235JR Structural Steel, Hot Rolled, Base Material, Thickness t ≤ 16 mm
**Overview:**
EN S235JR is the **most fundamental and widely used non-alloy structural steel** in Europe, defined as a **base material** under the EN 10025-2 standard. The "JR" designation indicates the baseline quality level, with impact properties verified at room temperature (+20°C). It is supplied in the hot-rolled condition and is characterized by excellent weldability, good formability, and high cost-effectiveness. For thicknesses **≤ 16 mm**, it achieves its highest guaranteed yield strength. It is critical to note that **S235JR is NOT a "High Manganese" steel**; it is a standard carbon-manganese steel with typical manganese levels.
**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:** **S235JR**
* **S:** Structural Steel
* **235:** Minimum yield strength (ReH) in MPa for thicknesses **≤ 16 mm**.
* **JR:** Basic quality. **'J'** = Impact tested; **'R'** = Test temperature is **Room Temperature (+20°C)**.
* **Clarification on "High Manganese":** This is a **misleading and incorrect classification**. S235JR has a standard manganese content for its class and is not chemically distinguished by high manganese. Its key attribute is its status as the **economical base grade**.
* **Common International Equivalents:**
* **ASTM:** **A36** (closest general-purpose equivalent).
* **JIS:** **SS400**.
* **GB/T:** **Q235B**.
* **ISO:** **Fe360B** as per ISO 630-2.
**Chemical Composition (Ladle Analysis, % by weight, maximum values per EN 10025-2 for t ≤ 16 mm):**
Standard composition for maximum manufacturability.
* **Carbon (C):** ≤ **0.17%**
* **Manganese (Mn):** ≤ **1.40%** (This is a standard upper limit, not a high level. Content is typically lower for thin sheets to aid formability).
* **Phosphorus (P):** ≤ **0.045%**
* **Sulphur (S):** ≤ **0.045%**
* **Nitrogen (N):** ≤ **0.014%** (for killed steel, may be higher for rimming steel in thin sheets).
* **Note:** For thin hot-rolled sheet (t < 3mm), it may be supplied as "rimming steel," which has lower silicon content and different solidification characteristics.
**Physical & Mechanical Properties (for hot-rolled condition, thickness t ≤ 16 mm):**
This is the optimal thickness range for achieving the full nominal strength.
* **Yield Strength (ReH):** ≥ **235 MPa** (This is the **highest guaranteed minimum** for this grade, applicable only to t ≤ 16mm).
* **Tensile Strength (Rm):** **360 - 510 MPa**.
* **Elongation at Break (A5):** ≥ **26%** (Minimum, longitudinal test piece. Demonstrates excellent ductility).
* **Impact Energy (KV):** ≥ **27 J at +20°C** (Longitudinal, Charpy V-notch). **CRITICAL LIMITATION:** No guaranteed toughness below +20°C.
* **Density:** **7.85 g/cm³**.
* **Modulus of Elasticity:** **210 GPa**.
* **Poisson's Ratio:** **0.3**.
**Product Features:**
1. **Optimal Strength in Thin Sections:** Delivers its full nominal yield strength (235 MPa) in this thickness range, offering the best weight-to-strength ratio for this grade.
2. **Exceptional Weldability and Formability:** The low carbon content and thin gauge make it extremely easy to weld (no pre-heat typically required) and cold form (bend, roll, stamp).
3. **Maximum Cost Efficiency:** The most economical entry point for structural steel components, offering proven performance for a vast array of non-critical applications.
4. **Availability:** The most readily available steel grade in a wide variety of forms (sheet, strip, sections).
**Typical Applications (for t ≤ 16 mm):**
S235JR in thin sections is ubiquitous in light construction and general manufacturing.
* **Light Construction:** **Purlins, girts, cladding rails, and light framing sections** (often cold-formed from hot-rolled coil).
* **General Fabrication:** **Machine guards, cabinets, covers, brackets, and platforms**.
* **Automotive & Transport:** **Non-critical trailer body panels, internal reinforcements, and container sheathing**.
* **Storage & Furniture:** **Shelving units, racking components, and industrial furniture**.
* **Ductwork & Enclosures:** **Ventilation ducts, cable trays, and electrical enclosures**.
**Available Forms & Processing (for t ≤ 16 mm):**
* **Forms:** **Hot-rolled sheet and strip** (in coils or cut lengths), **flat bars**, and **light structural sections** (angles, channels).
* **Surface:** Typically with mill scale. Commonly available as **pickled and oiled (PO)** for painting or further processing.
* **Processing:** Ideal for **shearing, punching, laser/plasma cutting, roll-forming, and all types of welding**.
---
**Critical Selection & Procurement Note:**
* **Temperature Warning:** The **JR quality is unsuitable for any application where the service temperature can fall below 0°C**, especially if dynamic loads or impact are involved. For such uses, **S235J0 (0°C) or S235J2 (-20°C)** must be specified.
* **Thickness-Strength Relationship:** This is the reference thickness for the 235 MPa yield strength. For thicker material, the guaranteed yield strength decreases (e.g., ≥225 MPa for t > 40mm).
* **Correct Terminology:** Avoid using the term "High Manganese." The correct description is **"Non-Alloy Base Structural Steel."**
* **Specification:** For thin sheet, it is advisable to specify if **killed or rimming steel** is required based on the forming and welding process. For most fabrication, killed steel is preferred.
-:-
For detailed product information, please contact sales.
-:
EN S235JR High Manganese, Structural, Hot Rolled, Base Steel, t < 16 mm Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5812 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
-:-
For detailed product information, please contact sales.
-:
EN S235JR High Manganese, Structural, Hot Rolled, Base Steel, t < 16 mm Properties
-:-
For detailed product information, please contact sales.
-:
Applications of EN S235JR High Manganese, Structural, Hot Rolled, Base Steel Flange, t < 16 mm
-:-
For detailed product information, please contact sales.
-:
Chemical Identifiers EN S235JR High Manganese, Structural, Hot Rolled, Base Steel Flange, t < 16 mm
-:-
For detailed product information, please contact sales.
-:
Packing of EN S235JR High Manganese, Structural, Hot Rolled, Base Steel Flange, t < 16 mm
-:-
For detailed product information, please contact sales.
-:
Standard Packing:
-:-
For detailed product information, please contact sales.
-:
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 2283 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
