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."
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ASTM A572 Steel Flange, grade 60 Product Information
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ASTM A572 Steel Flange, grade 60 Synonyms
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ASTM A572 Steel, grade 60 Product Information
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## **Product Datasheet: ASTM A572 / A572M Grade 60 Steel**
**Product Overview**
ASTM A572 Grade 60 is a **high-strength low-alloy (HSLA) structural steel** offering a significant increase in strength over standard construction grades, with a guaranteed **minimum yield strength of 60 ksi (415 MPa)**. This grade represents the high-strength tier of the widely used A572 series, providing approximately 20% greater yield strength than Grade 50. Through precise **columbium (niobium) or vanadium microalloying**, it achieves enhanced mechanical properties while maintaining good weldability and toughness. Grade 60 is engineered for applications where maximizing structural efficiency, reducing member size, or handling higher design loads is critical. It is available in plates, structural shapes, and bars.
**Key International Standards**
* **Primary Standard:** **ASTM A572 / A572M** - Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel.
* **Governing Specification:** This product conforms to all requirements for **Grade 60**.
* **Microalloying System:** Strength is achieved via grain refinement and precipitation strengthening from controlled additions of **Columbium (Cb/Nb)**, **Vanadium (V)**, or a combination.
* **Heat Treatment:** Typically supplied in the **as-rolled** condition. For plates, especially in thicker sections, **normalizing** is often specified to ensure uniform through-thickness properties and optimal toughness.
* **Related Standards:** Comparable to international grades such as **JIS G3106 SM570** and **EN 10025-2 S460NL** (for normalized material). It is a common bridge material between standard structural steels and quenched & tempered plates.
**Chemical Composition (Weight % - ASTM A572 Grade 60 Requirements)**
Chemistry is balanced to deliver higher strength while maintaining fabricability, with controlled carbon and manganese levels.
| Element | Requirement (Max, unless noted) | Purpose & Note |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.26% | Controlled for strength and weldability balance. |
| **Manganese (Mn)** | 1.35% | Solid solution strengthening. |
| **Phosphorus (P)** | 0.04% | Impurity control. |
| **Sulfur (S)** | 0.05% | Impurity control. |
| **Silicon (Si)** | 0.40% | Deoxidizer. |
| **Columbium (Cb/Nb)** | 0.05% Max (if added) | Primary grain refiner. |
| **Vanadium (V)** | 0.15% Max (if added) | Precipitation strengthener. |
| **Carbon Equivalent (C.E. IIW)** | -- | Typically 0.42 - 0.50, indicating weldability that requires **controlled procedures**. |
**Physical & Mechanical Properties**
| Property | Requirement (ASTM A572 Grade 60) | Typical Performance & Significance |
| :--- | :--- | :--- |
| **Yield Strength (Min)** | 60 ksi (415 MPa) | Typically 63 - 73 ksi (435 - 503 MPa) |
| **Tensile Strength** | 75 ksi (515 MPa) min | Typically 80 - 90 ksi (552 - 621 MPa) |
| **Elongation in 2" (Min)** | 17% | Maintains adequate ductility for structural performance. |
| **Yield-to-Tensile Ratio** | Not specified in A572. | Typically 0.78 - 0.85. |
| **Modulus of Elasticity** | ~29,000 ksi (200 GPa) | Standard for steel. |
| **Atmospheric Corrosion Resistance** | ~2x carbon steel (if Cu ≥ 0.20% specified). | Optional feature. |
| **Key Feature** | **High-Strength Microalloyed Workhorse:** Delivers 60 ksi yield strength through cost-effective microalloying, offering a viable alternative to more expensive quenched & tempered steels for many applications where extreme toughness is not the primary driver. |
**Product Applications**
ASTM A572 Grade 60 is specified for demanding structural applications where strength and weight efficiency are paramount.
* **Bridge Construction:** Primary girders (especially welded plate girders), truss members, and splice plates in medium to long-span bridges.
* **Heavy Industrial Structures:** Columns, transfer girders, and crane runway beams in mills, power plants, and processing facilities.
* **Mobile Crane & Heavy Equipment:** Boom sections, outrigger pads, and main frames where high strength-to-weight ratio is critical for performance.
* **Material Handling:** Structural components for high-capacity stacking cranes, shipyard gantries, and large conveyors.
* **Building Construction:** Heavily loaded columns in high-rise buildings, long-span trusses, and moment-resisting frames in seismic zones (when toughness is verified).
* **Transportation:** Chassis components for specialized heavy-haul trucks and trailers.
**Advantages & Fabrication Notes**
* **Controlled Weldability:** Welding requires established procedures due to the higher strength and carbon equivalent.
* **Preheat:** **Generally required.** AWS D1.1 recommends preheat for Grade 60 material. Typical range is **200-350°F (93-177°C)**, depending on thickness and restraint.
* **Low-Hydrogen Practice:** Mandatory. Use of matching strength, low-hydrogen electrodes (e.g., E80XX, E90XX series).
* **Procedure Qualification:** Welding Procedure Specifications (WPS) should be qualified per applicable codes (AWS D1.1, D1.5).
* **Good Formability with Consideration:** Can be cold formed, but requires larger bend radii and more force than lower-strength grades. Hot forming is commonly used for complex shapes.
* **Strength Efficiency:** Enables significant reductions in member size and weight compared to Grade 50, offering potential savings in material, fabrication, and transportation.
* **Toughness & Supplementary Requirements:** For critical applications (fracture-critical members, dynamic loading, low-temperature service), it is **essential to specify supplementary impact testing (ASTM A6 S1)** to guarantee adequate Charpy V-Notch toughness.
**Disclaimer:**
This datasheet describes **ASTM A572 Grade 60**. For procurement, clearly specify the **standard (A572), grade (60), product form, and condition** (e.g., normalized for plates over 1.5").
**Critical Considerations:**
1. **Not an A992 Equivalent:** For wide-flange shapes, A992 is typically specified for 50 ksi yield. Grade 60 shapes are a separate product with higher strength.
2. **Welding is Specialized:** Fabricators must have experience with high-strength steels. Improper welding can lead to hydrogen cracking or inadequate joint strength.
3. **Connection Design:** Bolted and welded connection designs must account for the higher strength. Oversizing bolts or using undersized welds relative to the base metal strength can lead to connection failures.
4. **Toughness is Not Automatic:** The base A572 specification does not require impact testing. **For any load-carrying application, impact testing should be specified** to define minimum toughness at the project's service temperature.
5. **Availability:** Confirm availability with suppliers, as production runs for Grade 60 may be less frequent than for Grade 50.
This grade is a powerful tool for structural optimization but demands respect for its fabrication requirements and the need for explicit toughness certification in most structural applications.
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ASTM A572 Steel, grade 60 Specification
Dimensions
Size：
Diameter 20-1000 mm Length <4719 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
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ASTM A572 Steel, grade 60 Properties
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Applications of ASTM A572 Steel Flange, grade 60
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Chemical Identifiers ASTM A572 Steel Flange, grade 60
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Packing of ASTM A572 Steel Flange, grade 60
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Standard Packing:
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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 1190 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
