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 1.0145 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm Product Information
-:-
For detailed product information, please contact sales.
-:
EN 1.0145 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm Synonyms
-:-
For detailed product information, please contact sales.
-:
EN 1.0145 Structural, Hot Rolled, Quality Steel, t 200-250 mm Product Information
-:-
For detailed product information, please contact sales.
-:
**Product Name:** EN 1.0145 (S275) Structural Steel, Hot Rolled, Quality Grade, t=200-250 mm
**Overview:**
EN 1.0145 is a non-alloy, **high-manganese quality structural steel** specified under the EN 10025-2 standard, corresponding to grade **S275**. Supplied in the hot-rolled condition, it is characterized by a higher manganese-to-carbon ratio, offering enhanced strength and toughness compared to standard S235 grades. This product is available in ultra-heavy plate thicknesses from **200 to 250 mm**, designed for the most demanding structural applications where high load-bearing capacity, integrity, and reliability in massive sections are critical.
**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:** Steel Grade **S275**. For thick plates (t=200-250 mm), the required impact toughness must be explicitly specified. Common quality designations are **J0** (impact tested at 0°C) or **J2** (impact tested at -20°C) to ensure performance.
* **Important Note:** For this extreme thickness range, the standard **allows for a reduction in minimum mechanical properties**. The values stated below are the nominal minimums for thinner sections; the guaranteed values for 200-250 mm plate must be **contractually agreed upon between supplier and customer** based on mill capability and the relevant clauses of EN 10025-2 (Annex D).
* **Comparable Standards:** ASTM A572 Grade 50 (in terms of strength application, not chemistry), JIS SM490.
**Chemical Composition (Ladle Analysis, % by weight, max. unless stated as range):**
The high manganese content is essential for achieving strength and hardenability in thick sections.
* **Carbon (C):** ≤ 0.21%
* **Manganese (Mn):** ≤ 1.50%
* For this thickness range, a minimum content is crucial. Typically, Mn ≥ 1.00% is required as per standard rules for thicknesses > 40mm.
* **Phosphorus (P):** ≤ 0.035% (Often tighter for quality thick plate)
* **Sulphur (S):** ≤ 0.035% (Often tighter for improved internal soundness)
* **Nitrogen (N):** ≤ 0.014%
* **Silicon (Si):** Typically 0.10% - 0.40% (Fully killed steel is mandatory for such thicknesses to ensure homogeneity).
* **Carbon Equivalent (CET):** Will be calculated and controlled to ensure weldability. Typically CET ≤ 0.40% for preheat/weldability assessments.
**Physical & Mechanical Properties (Typical for Hot-Rolled/Normalized Condition, t=200-250mm):**
* **Yield Strength (ReH):** **≥ 255 MPa** (Important: This is an estimated/typical minimum for this thickness range. The standard nominal min. is 275 MPa for t≤40mm, but a reduction of ~20 MPa or more is permissible for 200-250mm. Exact guaranteed value must be confirmed upon order).
* **Tensile Strength (Rm):** **410 - 560 MPa** (The range remains valid, but the lower end is more typical for thick sections).
* **Elongation at Break (A5):** **≥ 20%** (Minimum, may be reduced from the nominal 22% due to thickness).
* **Impact Energy (KV):** Critical property for thick plate. Must be specified (e.g., **J0: ≥ 27 J at 0°C**). Testing is usually performed at 1/4 thickness from a rolled surface. Higher quality (J2, K2) may be required for low-temperature service.
* **Through-Thickness Properties (Z-direction):** **Can be specified** (e.g., EN 10164, quality level Z25 or Z35) to prevent lamellar tearing in highly constrained welded joints. **Highly recommended for critical applications.**
* **Density:** 7.85 g/cm³.
* **Modulus of Elasticity:** 210 GPa.
**Product Features for Thick Plate Application:**
1. **High Load-Bearing Capacity:** Provides the core strength for massive structural components.
2. **Guaranteed Through-Thickness Integrity:** Manufactured with strict controls (killing, conditioning) to ensure sound internal structure, verified by ultrasonic testing (UT) per EN 10160 or SE 1716.
3. **Enhanced Toughness:** The high manganese content and controlled rolling/heat treatment ensure adequate fracture toughness even in the core of the thick plate.
4. **Weldability (with Procedure):** Despite the thickness, the controlled chemistry allows welding, but it requires **strictly qualified procedures** including pre-heating, controlled heat input, and post-weld heat treatment (PWHT) as per EN 1011 to manage residual stresses and microstructural changes.
5. **Machinability & Formability:** Can be machined and formed, though power requirements are high.
**Typical Applications for 200-250 mm Plate:**
* **Heavy Civil Engineering:** Critical nodes and chords in **offshore jacket foundations**, legs of **heavy-lift crane bases**, and anchor blocks for **long-span bridges and suspension bridges**.
* **Power Generation:** **Hydropower turbine housings**, structural supports in **nuclear and thermal power plants**, and massive bases for **wind turbine transition pieces**.
* **Shipbuilding & Offshore:** **Rudder stocks, stern frames, and keels** for large vessels; critical sections of **FPSO hulls** and **semi-submersible platform columns**.
* **Press & Machinery:** **Frames and platens for giant forging presses, injection molding machines**, and heavy mill housings in metalworking industries.
* **Defense:** Structural components for specialized heavy equipment.
**Available Forms & Quality Supplements:**
* **Form:** Hot-rolled, normalized, or thermomechanically rolled (TM) steel plates (normalizing is typical for this thickness).
* **Thickness Range:** 200 mm to 250 mm.
* **Width & Length:** As per mill capability, often up to 4000mm+ in width.
* **Mandatory Tests:** Full suite of mechanical tests (tensile, impact at specified temperature) from defined locations within the plate thickness. **Ultrasonic Testing (UT)** is standard for quality assurance.
* **Optional/Specified:** Through-thickness testing (Z-quality), Charpy testing at multiple locations and orientations, increased toughness quality (J2/K2).
-:-
For detailed product information, please contact sales.
-:
EN 1.0145 Structural, Hot Rolled, Quality Steel, t 200-250 mm Specification
Dimensions
Size：
Diameter 20-1000 mm Length <5798 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 1.0145 Structural, Hot Rolled, Quality Steel, t 200-250 mm Properties
-:-
For detailed product information, please contact sales.
-:
Applications of EN 1.0145 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm
-:-
For detailed product information, please contact sales.
-:
Chemical Identifiers EN 1.0145 Structural, Hot Rolled, Quality Steel Flange, t 200-250 mm
-:-
For detailed product information, please contact sales.
-:
Packing of EN 1.0145 Structural, Hot Rolled, Quality Steel Flange, t 200-250 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 2269 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
