ANSI B16.5 Class 300 Carbon Steel Weld Neck Flanges A105 WNRF Raised Face and Flat Face

ANSI B16.5 Class 300 Carbon Steel Weld Neck Flanges A105 WNRF Raised Face and Flat Face

Introduction of Our Company:

With more than 20 years of experience in the industry, Shaanxi Peter International Trade Co., Ltd. has developed extensive expertise in manufacturing carbon steel weld neck flanges in accordance with ASME B16.5 Class 300 specifications.

As a trusted supplier, we specialize in producing high-quality ANSI/ASME B16.5 Class 300 carbon steel weld neck flanges. These flanges are engineered to withstand lower pressure conditions than Class 400 flanges, making them ideal for demanding industrial applications.

The ASME B16.5 standard ensures precise dimensions, reliable pressure ratings, and superior performance for your carbon steel weld neck flanges. Made from carbon steel, our flanges offer exceptional strength, durability, and resistance to corrosion. Carbon steel is renowned for its outstanding mechanical properties, making it an excellent choice for a wide range of applications in industries such as oil and gas, petrochemical, power generation, and more.

ANSI B16.5 Class 300 Weld Neck Flanges:

The ANSI B16.5 Class 300 Carbon Steel Weld Neck Flanges A105 WNRF are designed according to the ANSI B16.5 standard, offering strong connection performance for medium to high-pressure systems. They are made of A105 carbon steel, a material widely used in piping systems for its good mechanical properties, making it suitable for general industrial applications. The Class 300 rating indicates that the flange can withstand a maximum pressure of 300 psi (the specific pressure depends on temperature and size).

The flange features a Weld Neck design, with a long, tapered neck that allows for a smooth transition between the pipe and the flange, helping to evenly distribute pressure and enhance the strength and durability of the connection. The Weld Neck Raised Face (WNRF) type has a raised face that provides a better seal when paired with a gasket, especially in high-pressure environments.

Additionally, the flanges offer two face options: Raised Face (RF) and Flat Face (FF). The Raised Face flange is ideal for high-pressure systems, offering more reliable sealing, while the Flat Face flange is used for low-pressure or less demanding applications, typically paired with flat gaskets.

These ANSI B16.5 Class 300 A105 WNRF flanges are widely used in industries such as oil and gas, petrochemical, power generation, and water treatment, particularly in piping systems that require strong, pressure-resistant, and reliably sealed connections.

ANSI/ASME B16.5 Weld Neck Flange Class 300 Dimensions:

1.Dimensions are in millimeters(mm).

2.B1 can be specified by different purchasers.

Differences Between ANSI B16.5 Class 150 and Class 300 Weld Neck Flanges:

The main differences between Class 150 and Class 300 flanges lie in their pressure ratings, material thickness, and application scenarios.

First, the pressure rating of a Class 150 flange is 150 psi (at 100°F / 37.8°C), making it suitable for low-pressure systems. In contrast, the pressure rating of a Class 300 flange is 300 psi (at 100°F / 37.8°C), allowing it to withstand higher pressures and making it suitable for more demanding environments.

In terms of material thickness, Class 150 flanges are designed to be thinner, which is appropriate for low-pressure applications. On the other hand, Class 300 flanges have thicker material to handle the increased pressure, making them more robust and suitable for high-pressure systems such as those found in oil, gas, and steam industries.

Additionally, Class 150 flanges are generally more cost-effective, as they require fewer materials and have simpler designs. Class 300 flanges, on the other hand, demand more material and a more intricate design and manufacturing process, resulting in a higher cost.

During installation, Class 150 flanges require fewer bolts and smaller sizes, making them relatively easy to install. In contrast, Class 300 flanges require more bolts and larger bolt sizes to ensure a secure connection due to their higher pressure requirements.

In summary, Class 150 flanges are suitable for low-pressure environments, while Class 300 flanges are designed for high-pressure systems, offering greater pressure-bearing capacity and a more robust structure.

Grades of Carbon Steel Flanges:

The different grades of carbon steel flanges are suitable for various pressure ratings, temperature ranges, and environmental conditions. Below are some common carbon steel flange grades and their applications:

A105 is the most common standard carbon steel grade, widely used in low to medium pressure piping systems. It has good strength and moderate corrosion resistance, typically used in water, oil, natural gas pipelines, and general industrial applications. Its pressure rating is generally suitable for systems with up to 1500 psi.

A350 LF2 is specifically designed for low-temperature environments, suitable for piping and equipment in extremely low temperatures. This grade of carbon steel has excellent low-temperature toughness and high strength, commonly used in liquefied gas, cryogenic transport, and refrigerated environments.

A106 is mainly used in high-temperature environments, especially in steam systems and high-pressure applications. It can withstand higher temperatures and offers excellent strength and oxidation resistance under high temperatures, often seen in power plants, refineries, and petrochemical industries, suitable for systems up to 800°F (427°C).

A516 Gr. 60/70 is a carbon steel used for pressure vessels, commonly found in the manufacture of boilers and pressure vessels. It has good weldability and impact resistance, with medium to high strength, suitable for high-pressure systems in the oil and gas industry.

A694 F52/F60/F65/F70 is used in the construction of oil and gas pipelines, especially where high strength and corrosion resistance are required. These grades can withstand higher pressures, making them common in high-pressure environments in the oil and gas industry.

A181 is primarily used for forged carbon steel flanges and fittings, suitable for low to medium pressure systems. This material offers good strength and toughness, typically applied in general industrial and commercial use, particularly in moderate temperature environments.

A350 LF3 is a variant of low-temperature carbon steel with better strength and impact resistance, suitable for service in extremely low temperatures. Similar to A350 LF2, it is widely used in low-temperature operations such as liquefied natural gas transport.

A106 Gr. B is one of the most common carbon steel grades, offering good strength, weldability, and versatility, suitable for various industrial piping systems. It is widely used in oil and gas, power, and chemical processing industries, with moderate pressure ratings, capable of meeting medium to high-pressure system requirements.

Each carbon steel flange material is suited for specific environments and conditions, so choosing the right grade is crucial to ensuring the safety and durability of the project.

Applications of ASME B16.5 Carbon Steel Weld Neck Flanges:

ASME B16.5 Carbon Steel Weld Neck Flanges are widely used in various industries due to their durability, strength, and ability to withstand high pressures and temperatures. In the petrochemical industry, they are commonly found in pipelines, pressure vessels, and reactors, handling oil, gas, and chemicals. The oil and gas sector uses them extensively in offshore platforms and drilling rigs for pipeline connections under harsh conditions. In power generation, they are crucial for steam, water, and gas lines in power plants, including boilers and heat exchangers. Chemical processing plants rely on them for transporting aggressive chemicals under high pressure. They are also used in water treatment plants, HVAC systems, and marine applications for reliable connections in large-scale industrial systems. Additionally, they are suitable for cryogenic applications and are used in industries such as food and beverage for systems requiring high cleanliness and durability. Their adaptability and strength make them a popular choice for a variety of high-performance piping systems.