ASTM A36 Steel Flange, 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 A36 Steel Flange, flange Product Information -:- For detailed product information, please contact sales. -: ASTM A36 Steel Flange, flange Synonyms -:- For detailed product information, please contact sales. -:

ASTM A36 Steel, flange Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A36 Steel Flange** **ASTM A36 Steel Flange** refers to flange components manufactured from ASTM A36 carbon structural steel, which is one of the most commonly used materials for piping system connections and structural applications. These flanges provide reliable performance for moderate pressure and temperature services across various industries. --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A36/A36M** - "Standard Specification for Carbon Structural Steel" **Flange Standards:** - **ASME B16.5**: Pipe Flanges and Flanged Fittings - **ASME B16.47**: Large Diameter Steel Flanges - **MSS SP-44**: Steel Pipeline Flanges - **AWWA C207**: Steel Pipe Flanges **International Equivalents:** - **EN 10025-2**: S235JR - **JIS G3101**: SS400 - **GB/T 700**: Q235 - **ISO 630-2**: E235 --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A36 flanges: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.26 | | Manganese (Mn) | 0.80-1.20 | | Phosphorus (P) | 0.04 | | Sulfur (S) | 0.05 | | Silicon (Si) | 0.40 | | Copper (Cu) | 0.20 (when specified) | **Key Composition Features:** - **Balanced Carbon**: 0.26% maximum for weldability and strength - **Manganese Content**: 0.80-1.20% for enhanced strength - **Standard Quality**: Commercial grade impurity limits - **Copper Option**: Available for corrosion resistance --- #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Value | |---|---| | **Tensile Strength** | 400-550 MPa (58-80 ksi) | | **Yield Strength (min.)** | 250 MPa (36 ksi) | | **Elongation in 2" (min.)** | 20% | | **Brinell Hardness** | 119-162 HB | **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Poisson's Ratio**: 0.29 - **Thermal Conductivity**: 51.9 W/m·K - **Coefficient of Thermal Expansion**: 11.7 × 10⁻⁶/°C - **Specific Heat Capacity**: 486 J/kg·K --- #### **4. Product Applications** **Piping Systems:** - Low-pressure process piping - Water distribution systems - Ventilation duct connections - Utility service lines **Industrial Applications:** - Equipment mounting flanges - Machinery connection points - Structural support connections - Tank and vessel connections **Construction and Infrastructure:** - Building utility connections - HVAC system components - Plumbing system flanges - Structural steel connections **General Purpose Applications:** - Temporary piping connections - Maintenance and repair flanges - Non-critical process connections - General industrial use --- #### **5. Fabrication Characteristics** **Machining Performance:** - **Good Machinability**: 65-70% of B1112 steel - **Drilling and Tapping**: Excellent for bolt hole fabrication - **Facing Operations**: Good surface finish achievable - **Tool Life**: Standard tooling suitable **Welding Characteristics:** - **Excellent Weldability**: All common welding processes applicable - **Preheat Requirements**: Generally not required - **Recommended Processes**: SMAW, GMAW, FCAW - **Filler Metals**: E6013, E7018 or equivalent **Pressure-Temperature Ratings:** - **Maximum Pressure**: Suitable for ASME B16.5 Class 150 and 300 - **Temperature Range**: -29°C to 425°C (-20°F to 800°F) - **Pressure Limitations**: Not recommended for high-pressure services **Surface Treatment and Coating:** - **Painting**: Excellent adhesion with proper surface preparation - **Galvanizing**: Suitable for corrosion protection - **Plating**: Can be plated for specific applications - **Surface Finish**: Standard machined finish --- ### **Technical Summary** ASTM A36 steel flanges represent an economical and versatile solution for moderate service conditions in piping and structural applications. The 36 ksi minimum yield strength provides adequate mechanical performance for most low-pressure applications while maintaining excellent fabrication characteristics. These flanges are particularly valued for their cost-effectiveness, widespread availability, and ease of fabrication. The material's good weldability allows for easy installation and modification in the field, while its machinability enables precise dimensional control during manufacturing. While not suitable for high-pressure or corrosive services, ASTM A36 flanges provide reliable performance in water systems, ventilation, general industrial applications, and structural connections where extreme conditions are not encountered. The material's compliance with major flange standards ensures interchangeability and compatibility with other piping components. The proven performance history, combined with the economic advantages of ASTM A36 steel, has established these flanges as the preferred choice for general-purpose applications across multiple industries, particularly in construction, utilities, and industrial maintenance where cost-effectiveness and reliability are key considerations. -:- For detailed product information, please contact sales. -: ASTM A36 Steel, flange Specification Dimensions Size： Diameter 20-1000 mm Length <4360 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 A36 Steel, flange Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A36 Steel Flange, flange -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A36 Steel Flange, flange -:- For detailed product information, please contact sales. -:

Packing of ASTM A36 Steel Flange, 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 831 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