ASTM A570 Steel Flange, grade A

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. -: ASTM A570 Steel Flange, grade A, sheet and strip Product Information -:- For detailed product information, please contact sales. -: ASTM A570 Steel Flange, grade A, sheet and strip Synonyms -:- For detailed product information, please contact sales. -:

ASTM A570 Steel, grade A, sheet and strip Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A570 Grade A: Carbon Steel Sheet and Strip** #### **1. Overview** ASTM A570 Grade A is a standard specification for **carbon steel sheets and strips** in various quality grades, primarily used for **structural and general engineering applications**. Grade A represents the lowest strength level within this specification, offering good formability and weldability for applications where high strength is not the primary requirement. This material is typically supplied in the as-rolled condition and is widely used in construction, manufacturing, and general fabrication industries. #### **2. Chemical Composition** The chemical composition is balanced for good formability and weldability: | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.15 max | | Manganese (Mn) | 0.60 max | | Phosphorus (P) | 0.035 max | | Sulfur (S) | 0.035 max | | Copper (Cu) | 0.20 min (when specified) | **Key Composition Features:** - **Low Carbon Content**: Ensures excellent weldability and formability - **Moderate Manganese**: Provides basic strength and hardenability - **Standard Quality Control**: Meets basic structural steel requirements - **Copper Option**: Available for improved atmospheric corrosion resistance #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Requirement | |----------|-------------| | **Tensile Strength** | 45 ksi min (310 MPa min) | | **Yield Strength** | 25 ksi min (170 MPa min) | | **Elongation in 2 inches** | 25% min | **Physical Properties (Typical):** - **Density**: 0.284 lb/in³ (7,850 kg/m³) - **Modulus of Elasticity**: 29,000 ksi (200 GPa) - **Poisson's Ratio**: 0.29 - **Thermal Expansion Coefficient**: 6.5 × 10⁻⁶/°F (11.7 × 10⁻⁶/°C) - **Thermal Conductivity**: 45.0 W/m·K at 212°F (100°C) **Forming Characteristics:** - **Excellent Formability**: Suitable for bending, rolling, and deep drawing - **Good Weldability**: All standard welding processes applicable - **Surface Quality**: Commercial finish standard, various surface treatments available #### **4. Product Applications** Grade A is widely used in various structural and general applications: **Construction and Building:** - Building framing members - Roof and wall panels - Structural supports and braces - Building hardware components **Manufacturing and Fabrication:** - Machine guards and covers - Equipment housings and enclosures - Fabricated metal products - General machinery components **Transportation and Automotive:** - Truck and trailer components - Vehicle structural members - Automotive brackets and supports - Transportation equipment parts **Consumer Products:** - Furniture frames - Storage rack components - Appliance parts - General hardware items #### **5. International Standards & Equivalents** | Region/Country | Standard | Equivalent Grade | Notes | |----------------|----------|------------------|-------| | **International** | **ISO 3574** | CR1 | Commercial quality carbon steel | | **Europe** | **EN 10025-2** | S235JR | Structural steel equivalent | | **Japan** | **JIS G3101** | SS330 | General structural steel | | **China** | **GB/T 700** | Q195 | Carbon structural steel | **A570 Grade Comparison:** | Grade | Tensile Strength min | Yield Strength min | Typical Applications | |-------|---------------------|-------------------|---------------------| | **Grade A** | 45 ksi | 25 ksi | Light structural, general purpose | | **Grade B** | 50 ksi | 30 ksi | Intermediate strength applications | | **Grade C** | 55 ksi | 33 ksi | Medium strength structural | #### **6. Fabrication & Quality Assurance** **Forming and Fabrication:** - **Bending**: Excellent cold bending capabilities - **Punching**: Good punchability with standard tooling - **Welding**: All processes suitable (SMAW, GMAW, GTAW, Resistance) - **Machining**: Good machinability with proper tools and techniques **Surface Treatments:** - **Painting**: Excellent paint adhesion with proper surface preparation - **Galvanizing**: Suitable for hot-dip and electro-galvanizing - **Plating**: Can be plated with various metallic coatings - **Phosphating**: Provides good paint base and corrosion resistance **Quality Control:** - **Tension Tests**: From each lot of material - **Bend Tests**: Required to verify ductility - **Surface Inspection**: Visual examination for defects - **Dimensional Checks**: Thickness, width, and flatness verification --- **Technical Advantages:** - **Cost-effective** solution for light structural applications - **Excellent formability** for complex fabrications - **Good weldability** with standard processes - **Wide availability** in various sizes and forms **Design Considerations:** - **Structural applications** with moderate load requirements - **Forming operations** requiring good ductility - **Welded constructions** with standard procedures - **Cost-sensitive projects** where material economy is important **Service Limitations:** - **Not recommended** for high-stress applications - **Limited corrosion resistance** without protective coatings - **Impact properties** may be limited at low temperatures - **Strength limitations** for heavy structural applications **Disclaimer:** This information is for technical reference only. For structural applications, consult the latest ASTM A570 specification and applicable building codes. Material selection should consider specific service conditions, loading requirements, and environmental factors, and must be approved by qualified engineers. Proper fabrication practices and quality control measures should be implemented to ensure satisfactory performance. -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade A, sheet and strip Specification Dimensions Size： Diameter 20-1000 mm Length <4463 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. -: ASTM A570 Steel, grade A, sheet and strip Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A570 Steel Flange, grade A, sheet and strip -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A570 Steel Flange, grade A, sheet and strip -:- For detailed product information, please contact sales. -:

Packing of ASTM A570 Steel Flange, grade A, sheet and strip -:- 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 934 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