ASTM A529 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 A529 Steel Flange Product Information -:- For detailed product information, please contact sales. -: ASTM A529 Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

ASTM A529 Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A529 Structural Steel** **ASTM A529** is a standard specification for high-strength carbon-manganese steel plates, shapes, and bars of structural quality, primarily used in riveted, bolted, or welded construction of bridges and buildings. This grade provides a minimum yield strength of **50 ksi (345 MPa)**, offering an economical alternative to traditional carbon steels with enhanced strength characteristics. As a cost-effective high-strength material, it serves as an intermediate option between conventional mild steels and premium high-strength low-alloy (HSLA) steels. --- #### **1. International Standards & Grades** **Primary Standard:** **ASTM A529/A529M** - "Standard Specification for High-Strength Carbon-Manganese Steel of Structural Quality" **Grade Classification:** - **Grade 50** [345 MPa] - Standard grade - **Grade 55** [380 MPa] - Higher strength variant (subject to agreement between supplier and purchaser) **International Equivalents:** - **EN 10025-2**: S275J0/J2 - **JIS G3101**: SM490 - **ISO 630-2**: E275C --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A529 Grade 50: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.27 | | Manganese (Mn) | 1.20 | | Phosphorus (P) | 0.04 | | Sulfur (S) | 0.05 | | Silicon (Si) | 0.40 | | Copper (Cu) | 0.20 (when copper steel is specified) | **Key Composition Features:** - **Carbon-Manganese System**: Relies on manganese for solid solution strengthening - **Moderate Carbon Content**: Balances strength and weldability - **Simple Chemistry**: No expensive alloying elements, making it cost-effective - **Optional Copper**: Provides improved atmospheric corrosion resistance when specified --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (Grade 50):** | Property | Value | |---|---| | **Tensile Strength** | 415-585 MPa (60-85 ksi) | | **Yield Strength (min.)** | 345 MPa (50 ksi) | | **Elongation in 2" (min.)** | 18% | | **Elongation in 8" (min.)** | 21% | **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Poisson's Ratio**: 0.29 - **Coefficient of Thermal Expansion**: 11.5 × 10⁻⁶/°C (20-100°C) **Impact Properties:** - Charpy V-Notch testing typically conducted at 70°F (21°C) - Minimum average impact energy: 20 ft-lbf (27 J) --- #### **4. Product Applications** **Building Construction:** - Structural frames and columns - Roof trusses and support systems - Building frameworks - Industrial facility structures **Bridge Construction:** - Secondary bridge members - Approach spans - Pedestrian bridge components - Bridge deck supports **General Structural Applications:** - Transmission towers - Construction equipment components - Heavy-duty storage racks - Industrial platform structures **Transportation Infrastructure:** - Highway sign supports - Guard rail components - Traffic signal structures **Marine Structures:** - Pier and dock components - Marine platform supports - Coastal structure elements --- #### **5. Fabrication Characteristics** **Welding:** - **Excellent Weldability**: Can be welded by all common processes - **Preheat Requirements**: Generally not required for thinner sections - **Recommended Processes**: SMAW, GMAW, FCAW, SAW - **Filler Metals**: E70XX series electrodes or equivalent **Forming & Machining:** - **Cold Forming**: Good formability with standard equipment - **Bend Radius**: Typically 1.5t to 2t for 90° bends - **Machinability**: Good (approximately 60% of B1112 steel) - **Cutting Methods**: All standard methods including oxy-fuel, plasma, and shear cutting **Heat Treatment:** - Normally supplied in as-rolled condition - Stress relieving available when specified - No quenching and tempering required --- ### **Technical Summary** ASTM A529 represents an economical high-strength structural steel that bridges the gap between conventional carbon steels and more expensive HSLA grades. Its simple carbon-manganese chemistry provides cost-effective strength enhancement while maintaining good weldability and formability. The grade is particularly valuable in applications where the higher strength of 50 ksi yield strength is beneficial, but the premium cost of alloy steels cannot be justified. While it doesn't offer the specialized properties of weathering steels or the ultra-high strength of quenched and tempered grades, ASTM A529 remains a popular choice for general structural applications where reliability and economy are equally important. Its straightforward fabrication characteristics make it suitable for a wide range of construction projects without requiring specialized equipment or procedures. -:- For detailed product information, please contact sales. -: ASTM A529 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4291 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 A529 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A529 Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A529 Steel Flange -:- For detailed product information, please contact sales. -:

Packing of ASTM A529 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 762 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