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 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Flange Product Information
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EN 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Flange Synonyms
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EN 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Product Information
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### **Product Name:** EN 1.0145 High Manganese Steel, Hot Rolled, Quality Structural Steel
#### **Overview**
EN 1.0145 is a **non-alloy, high-manganese quality structural steel** defined by the European standard EN 10025-2. The "high manganese" designation distinguishes it from other standard grades (like 1.0144/S235) by having a higher guaranteed manganese content relative to its carbon level. This composition enhances strength, hardenability, and toughness, making it particularly suitable for components requiring better mechanical performance than standard mild steel, while maintaining good weldability and formability. It is supplied 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 Designation:** Within this standard, the chemical composition of EN 1.0145 corresponds to the steel grade **S275**.
* **Quality Designation:** The standard offers different quality levels (JR, J0, J2, K2). EN 1.0145 is typically associated with the **J0** quality (impact tested at 0°C), but the specific quality (JR, J0, J2) must be specified when ordering based on application requirements.
* **Comparable Standards:**
* **ASTM:** A570 Grade 40 or A36 (with similar strength, but chemical composition differs).
* **JIS:** SS400 (general comparison).
* **GB/T:** Q275 (approximate equivalent).
#### **Chemical Composition (Ladle Analysis, % by weight, max. unless stated as range)**
The key feature is the elevated manganese-to-carbon ratio.
* **Carbon (C):** ≤ 0.21%
* **Manganese (Mn):** ≤ 1.50%
* For thicknesses ≤ 16 mm: Min. 0.80% - 1.50%
* For thicknesses > 16 mm - 40 mm: Min. 0.90% - 1.50%
* For thicknesses > 40 mm - 63 mm: Min. 1.00% - 1.50%
(Note: Specific min. values ensure the "high manganese" characteristic.)
* **Phosphorus (P):** ≤ 0.040%
* **Sulphur (S):** ≤ 0.040%
* **Nitrogen (N):** ≤ 0.014%
* **Silicon (Si):** ≤ 0.040% (for killed steel, required for thicker sections and certain qualities)
#### **Physical & Mechanical Properties (for hot-rolled condition, typical for t ≤ 16mm)**
Properties are thickness-dependent. Values decrease slightly with increasing thickness.
* **Yield Strength (ReH):** ≥ 275 MPa (Min. for nominal thickness ≤ 40mm).
* **Tensile Strength (Rm):** 410 - 560 MPa.
* **Elongation at Break (A5):** ≥ 22% (Minimum, based on longitudinal test piece).
* **Impact Energy (KV):**
* **Quality JR:** ≥ 27 J at +20°C
* **Quality J0:** ≥ 27 J at 0°C *(Most common for EN 1.0145)*
* Quality J2: ≥ 27 J at -20°C (optional, must be specified)
(Tested longitudinally, Charpy V-notch).
* **Density:** ~7.85 g/cm³.
* **Modulus of Elasticity:** ~210 GPa.
* **Poisson's Ratio:** ~0.3.
#### **Product Features**
1. **Enhanced Strength:** Higher minimum yield (275 MPa) and tensile strength compared to S235 grades (1.0144), allowing for lighter or stronger designs.
2. **Improved Toughness:** The high manganese content refines the grain structure, contributing to better impact resistance, especially in colder environments (when J0 or J2 quality is ordered).
3. **Good Weldability:** Despite higher strength, the controlled carbon content and carbon equivalent (typically low) allow for good weldability using all common methods. Pre-heating may be required for thicker sections.
4. **Good Formability:** Suitable for cold bending, rolling, and other forming operations.
5. **Cost-Effective Upgrade:** Provides a better performance-to-cost ratio than alloy steels for many applications where standard S235 is insufficient.
#### **Typical Applications**
EN 1.0145 (S275) is widely used in general and heavy engineering structures where higher load-bearing capacity is needed:
* **Structural Construction:** Beams, columns, trusses, and brackets in industrial buildings, warehouses, and medium-span bridges.
* **Heavy Vehicle & Transportation:** Chassis frames, trailer undercarriages, railway wagon components, and crane booms.
* **Material Handling:** Forklift masts, conveyor system supports, and heavy-duty storage racking.
* **Mining & Agricultural Machinery:** Structural parts, buckets, and supports requiring higher abrasion resistance and toughness.
* **General Fabrication:** Base plates, frames, and machinery beds where S235 strength is inadequate.
#### **Available Forms & Processing**
* **Forms:** Hot-rolled sheets, plates, strips, bars, and structural sections (beams, channels, angles).
* **Surface Condition:** Usually with mill scale (black). Can be shot blasted or pickled upon request.
* **Processing:** Readily suited for cutting (plasma, laser, oxy-fuel), welding, machining, and forming.
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**Important Note:** For critical applications, especially with thicknesses above 40mm or in sub-zero service temperatures, engineers must consult the full EN 10025-2 standard for precise property guarantees (thickness derogations) and specify the required **quality designation (JR/J0/J2)** and any additional testing (e.g., ultrasonic testing for internal soundness) in the purchase order. Always refer to the manufacturer's technical data sheet for batch-specific properties.
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EN 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5797 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 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Properties
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Applications of EN 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Chemical Identifiers EN 1.0145 High Manganese, Structural, Hot Rolled, Quality Steel Flange
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Packing of EN 1.0145 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 2268 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
