ASTM A642 Galvanized Steel Flange

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 A642 Galvanized Steel Flange Product Information -:- For detailed product information, please contact sales. -: ASTM A642 Galvanized Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

ASTM A642 Galvanized Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A642 Galvanized Steel** **ASTM A642** is a standard specification for **steel sheet, zinc-coated (galvanized) by the hot-dip process**, with chemical composition and mechanical properties optimized for forming and drawing applications. This specification covers commercial quality, drawing quality, and structural quality galvanized steel sheets intended for applications where corrosion resistance, formability, and good surface quality are required. --- #### **1. Key International Standards** * **Primary Standard:** **ASTM A642/A642M** - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process * **Related International Standards:** * **ASTM A653/A653M:** Galvanized Steel with Various Coating Designations * **ISO 3575:** Hot-dip zinc-coated carbon steel sheet of commercial and drawing qualities * **EN 10346:** Continuously hot-dip coated steel flat products * **JIS G3302:** Hot-dip zinc-coated steel sheets and coils * **GB/T 2518:** Continuous hot-dip zinc-coated steel sheets and strips --- #### **2. Chemical Composition (Base Steel, %)** | Element | Commercial Quality | Drawing Quality | Notes | |---------|-------------------|------------------|-------| | **Carbon (C)** | 0.15 max | 0.10 max | Lower carbon enhances formability | | **Manganese (Mn)** | 0.60 max | 0.50 max | Controlled for drawing performance | | **Phosphorus (P)** | 0.035 max | 0.030 max | Reduced for better formability | | **Sulfur (S)** | 0.035 max | 0.035 max | Low sulfur improves surface quality | | **Silicon (Si)** | 0.10 max | 0.10 max | Controlled for coating adherence | *Note: The base steel chemistry varies by quality designation, with Drawing Quality having tighter controls for enhanced formability.* --- #### **3. Mechanical & Physical Properties** **Mechanical Properties (Base Steel):** | Property | Commercial Quality | Drawing Quality | |----------|-------------------|------------------| | **Tensile Strength** | 44-58 ksi (300-400 MPa) | 40-52 ksi (275-360 MPa) | | **Yield Strength** | 30-45 ksi (205-310 MPa) | 25-38 ksi (170-260 MPa) | | **Elongation (2")** | 20-28% min | 24-32% min | **Coating Properties:** | Coating Designation | Coating Mass [oz/ft² (g/m²)] | Typical Coating Thickness | |---------------------|-------------------------------|--------------------------| | **G60** | 0.60 (180) total both sides | 0.0009 in (0.023 mm) | | **G90** | 0.90 (275) total both sides | 0.0013 in (0.033 mm) | **Physical Properties:** * **Density:** 7.85 g/cm³ (Steel base) * **Zinc Coating Density:** 7.14 g/cm³ * **Melting Point of Zinc:** 419°C (786°F) * **Thermal Conductivity:** 50-60 W/m·K * **Coefficient of Thermal Expansion:** 11.5 × 10⁻⁶/°C --- #### **4. Product Applications** **Construction & Building:** * Roofing and siding panels * Structural purlins and girts * Building frames and supports * HVAC ductwork and components **Automotive & Transportation:** * Truck body panels and frames * Vehicle underbody components * Trailer and container panels * Automotive structural parts **Industrial & Manufacturing:** * Electrical enclosures and cabinets * Machinery guards and covers * Storage tanks and containers * Agricultural equipment components **Consumer Products:** * Appliance housings and parts * Furniture frames and components * Storage shelving and racks * Outdoor equipment enclosures --- #### **5. Key Advantages** * **Superior Corrosion Resistance:** Zinc coating provides sacrificial protection * **Excellent Formability:** Suitable for bending, drawing, and stamping operations * **Good Weldability:** Can be welded using standard resistance welding methods * **Attractive Appearance:** Spangled surface finish suitable for exposed applications * **Cost-Effective Protection:** Long service life with minimal maintenance * **Recyclable:** Environmentally friendly and fully recyclable --- #### **6. Processing Characteristics** **Forming:** * Excellent for bending, roll forming, and moderate drawing * Minimum bend radii: 1-2 times material thickness * Suitable for lock forming and seam welding **Welding:** * Resistance spot welding recommended * MIG welding with proper ventilation * Special precautions needed for arc welding due to zinc fumes **Surface Treatment:** * Suitable for painting and powder coating * May require special pretreatment for optimal paint adhesion * Compatible with most chemical conversion coatings --- **Quality Assurance:** * Coating weight verification per ASTM A90 * Adherence testing per ASTM A239 * Surface quality inspection per ASTM A924 **Disclaimer:** This technical overview provides general information. For specific applications, consult the latest ASTM A642 standard and manufacturer's technical data sheets. Performance characteristics may vary based on coating weight, base steel quality, and environmental conditions. -:- For detailed product information, please contact sales. -: ASTM A642 Galvanized Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4506 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 A642 Galvanized Steel Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A642 Galvanized Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A642 Galvanized Steel Flange -:- For detailed product information, please contact sales. -:

Packing of ASTM A642 Galvanized Steel Flange -:- 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 977 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