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 1.0144 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm Product Information
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EN 1.0144 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm Synonyms
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EN 1.0144 Structural, Hot Rolled, Quality Steel, t 200-250 mm Product Information
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**Product Name:** EN 1.0144 Structural Steel, Hot Rolled, Quality Grade, t=200-250 mm
**Overview:**
EN 1.0144 is a standard non-alloy quality structural steel grade as specified in the European standard EN 10025-2. This hot-rolled steel is designed for general structural applications where good weldability, formability, and toughness are required. The product is supplied in heavy plates with a thickness range of 200 to 250 mm, making it suitable for large-scale, high-load-bearing components.
**Key International Standard:**
* **Primary Standard:** EN 10025-2:2019 - Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels.
* **Equivalent/Related Standards:**
* **DIN:** DIN S235JR (Historical/legacy designation, closely related)
* Note: Specific equivalents in ASTM, JIS, or GB standards would depend on the exact property requirements, but it is broadly comparable to ASTM A36 in terms of application, though chemical limits differ.
**Chemical Composition (ladle analysis, % by weight, typical max values):**
The composition is defined by the EN 10025-2 standard for quality grade steels. Key elements include:
* **Carbon (C):** ≤ 0.17%
* **Manganese (Mn):** ≤ 1.40%
* **Phosphorus (P):** ≤ 0.045%
* **Sulphur (S):** ≤ 0.045%
* **Nitrogen (N):** ≤ 0.014%
* **Silicon (Si):** Typically ≤ 0.050% (for killed steel, as required for thicker sections)
* The low carbon and sulphur content, along with controlled nitrogen, ensure good weldability and cold forming properties.
**Physical & Mechanical Properties (at room temperature, typical for t ≤ 250mm):**
Properties are guaranteed for the normalized (hot-rolled) delivery condition.
* **Yield Strength (ReH):** ≥ 235 MPa (Min. yield strength for thickness ≤ 40mm; for thickness 200-250mm, a reduction in min. yield strength may apply as per standard thickness derogations).
* **Tensile Strength (Rm):** 360 - 510 MPa
* **Elongation at Break (A5):** ≥ 24% (Minimum, based on standard test piece for thicker plates).
* **Impact Energy (KV):** ≥ 27 J at +20°C (Longitudinal, Charpy V-notch test. This is specified for the "JR" quality designation inherent in EN 1.0144).
* **Density:** Approximately 7.85 g/cm³.
* **Modulus of Elasticity:** ~210 GPa.
**Product Features:**
* **Good Weldability:** The low carbon equivalent (CET) allows for common welding methods (SMAW, SAW, FCAW, etc.) without pre-heating in most cases, though specific procedures are required for very thick sections.
* **Excellent Formability:** Suitable for cold bending and other forming operations.
* **Reliable Toughness:** Guaranteed minimum impact energy at room temperature.
* **Cost-Effective:** A versatile, economical choice for a wide range of structural applications.
**Typical Applications:**
This thick-plate product is engineered for heavy-duty structural components, including:
* **Heavy Construction:** Base plates, columns, girders, and trusses in industrial buildings, bridges, and high-rise structures.
* **Shipbuilding:** Internal structural members, bulkheads, and foundations.
* **Offshore & Marine Structures:** Components for jetties, platforms (non-primary), and harbor equipment.
* **Heavy Machinery:** Frames, supports, and chassis for mining, material handling, and agricultural equipment.
* **Civil Engineering:** Components for tunnels, dams, and large retaining walls.
**Available Forms & Sizes:**
* **Form:** Hot-rolled steel plates.
* **Thickness Range:** 200 mm to 250 mm.
* **Width & Length:** As per mill capability and customer order, typically up to several meters in width and length.
**Notes:**
* For thicknesses over 40mm, the minimum yield and tensile strengths may be subject to agreed reductions as per EN 10025-2. The exact values must be confirmed at the time of enquiry/ordering.
* The product is typically supplied in the normalized (hot-rolled) state. Further heat treatment (e.g., stress relieving) can be specified.
* Strict quality control during manufacturing ensures internal soundness and homogeneity, which is critical for the performance of such thick sections.
* It is essential to consult the mill's technical data sheets for the most precise and batch-specific property guarantees.
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EN 1.0144 Structural, Hot Rolled, Quality Steel, t 200-250 mm Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5796 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 1.0144 Structural, Hot Rolled, Quality Steel, t 200-250 mm Properties
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Applications of EN 1.0144 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm
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Chemical Identifiers EN 1.0144 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm
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Packing of EN 1.0144 Structural, Hot Rolled, Quality Steel Flange, t 200-250 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 2267 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
