ASTM A570 Steel Flange, grade 30

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 30 Product Information -:- For detailed product information, please contact sales. -: ASTM A570 Steel Flange, grade 30 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A570 Steel, grade 30 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A570 Grade 30 Steel** **ASTM A570 Grade 30** is a standard specification for steel plate and strip intended for structural applications, providing a minimum yield strength of **30 ksi (205 MPa)**. As part of the A570 series, this grade represents an economical carbon steel solution for general structural purposes where high strength is not the primary requirement. Its balanced combination of adequate strength, formability, and weldability makes it suitable for a wide range of fabricated components across various industries. --- #### **1. International Standards & Grades** **Primary Standard:** **ASTM A570/A570M** - "Standard Specification for Steel, Sheet and Strip, Carbon, Hot-Rolled, Structural Quality" **Grade Classification:** - **Grade 30** [205 MPa] - Minimum yield strength 30 ksi - Other grades in A570 series: 33, 36, 40, 45, 50, 55 **International Equivalents:** - **EN 10025-2**: S235JR - **JIS G3101**: SS330 - **ISO 630-2**: E235A --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A570 Grade 30: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.25 | | Manganese (Mn) | 0.90 | | Phosphorus (P) | 0.04 | | Sulfur (S) | 0.05 | | Silicon (Si) | 0.40 (optional) | **Key Composition Features:** - **Simple Carbon Steel Chemistry**: No mandatory alloying elements - **Moderate Carbon Content**: Balances strength and formability - **Economical Formula**: Utilizes cost-effective raw materials - **Optional Silicon**: May be added for deoxidation practice --- #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Value | |---|---| | **Tensile Strength** | 410-480 MPa (60-70 ksi) | | **Yield Strength (min.)** | 205 MPa (30 ksi) | | **Elongation in 2" (min.)** | 21% | | **Elongation in 8" (min.)** | 24% | **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 - **Specific Heat Capacity**: 486 J/kg·K --- #### **4. Product Applications** **Building & Construction:** - Building frames and supports - Roof decking and floor panels - Wall studs and framing members - Secondary structural components **Transportation Equipment:** - Truck body panels and floors - Trailer side panels and roofs - Automotive structural reinforcements - Railway car interior panels **Industrial Equipment:** - Machinery guards and covers - Equipment housings and enclosures - Conveyor system components - Storage rack components **Agricultural Applications:** - Tractor shrouds and covers - Implement frames and supports - Grain storage components - Equipment access panels **Commercial Products:** - Office furniture frames - Storage cabinet components - Display rack structures - Signage support frames --- #### **5. Fabrication Characteristics** **Welding:** - **Excellent Weldability**: All standard welding processes applicable - **Preheat Requirements**: Generally not required - **Recommended Processes**: SMAW, GMAW, FCAW, Resistance welding - **Filler Metals**: E60XX or E70XX series electrodes **Forming & Machining:** - **Cold Forming**: Excellent formability with standard equipment - **Bend Radius**: Typically 0.5t to 1t for 90° bends - **Machinability**: Good (approximately 70% of B1112 steel) - **Punching & Shearing**: Excellent performance with standard tooling **Surface Finish:** - Standard hot-rolled surface finish - Mill scale typically present - Suitable for painting and coating after surface preparation **Heat Treatment:** - Supplied in hot-rolled condition - Stress relieving available when specified - Annealing possible for improved formability --- ### **Technical Summary** ASTM A570 Grade 30 represents an economical and versatile structural steel suitable for a broad range of general fabrication applications. Its simple carbon steel composition provides adequate strength while maintaining excellent formability and weldability characteristics. The grade is particularly valuable in applications where cost-effectiveness is prioritized over high strength requirements. While it doesn't offer the specialized properties of high-strength or alloy steels, its consistent performance and ease of fabrication make it a popular choice for structural components in construction, transportation, and industrial equipment manufacturing. The material's straightforward processing requirements allow for efficient manufacturing without the need for specialized equipment or complex procedures, making it an ideal choice for high-volume production environments. -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade 30 Specification Dimensions Size： Diameter 20-1000 mm Length <4292 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 30 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A570 Steel Flange, grade 30 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A570 Steel Flange, grade 30 -:- For detailed product information, please contact sales. -:

Packing of ASTM A570 Steel Flange, grade 30 -:- 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 763 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