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High Strength Carbon Steel Welding Neck Flange

But according to ASTM, JIS, DIN, GB standard
ASTM: 304, 304 L, 316 L, 316,, and 316 Ti, 317, 317 L, 321, 321 H, etc
JIS: SUS304, SUS304L, SUS316 SUS316L, SUS316Ti, SUS317L, SUS321, SUS321H, etc
DIN: 1.4301, 1.4306, 1.4401, 1.4435, 1.4571, 1.4436, 1.4438, 1.4541, etc
GB: 0 Cr18N9, 00 Cr19Ni10

Manufacturing standards:
According to GB/T12459, GB/T13401, HG/T21635, HG/T21631, SY5010, SH3408, SH3409, ASME/ANSI, B16.9 JIS B2311/2312/2313, DIN2605/2615/2616/2617, the standard production.

Size range:
Seamless from DN15 to (1/2 "~ 24" pressure levels SCH5S ~ SCH160S
Have to sew the maximum 2 from DN15 production area than DN1800 1/2 "~ 48" the maximum production range than 72 "pressure levels SCH5S ~ SCH160S
(if there is non-standard products, customers can request the to chart production)

tallurgical, pharmaceutical, machinery, food, electric power, and other sectors of the pipeline device, installation, engineering support, the majority of customers use, made reliable quality, excellent service, high reputation.

Our well-equipped, advanced technology, with several pieces of equipment, large-scale machine tools, with the production of various size products capacity. Product variety, complete specifications, according to user requirements to develop a variety of standard or non-standard products. Reliable quality and reasonable price, is our continuous development foundation. We are willing to more products, better quality, best price welcome customers to visit the company negotiate.


A high-strength carbon steel welding neck flange is a type of flange used in piping systems for connecting pipes, valves, and other equipment. It is designed to be welded onto the pipe, providing a strong and leak-proof connection.

Carbon steel is a popular material choice for welding neck flanges due to its excellent mechanical properties, high strength, and resistance to corrosion. The high-strength carbon steel used in these flanges typically has a higher carbon content than standard carbon steel, which enhances its strength and durability.

The welding neck flange has a long tapered hub that transitions smoothly to the pipe, allowing for a smooth flow of fluids or gases. It features a raised face with bolt holes around the perimeter for attaching the flange to the mating flange or equipment.

The welding process used to attach the flange to the pipe is typically a butt-welding technique. This involves welding the neck of the flange to the end of the pipe, creating a strong and permanent connection. The welding process requires skilled welders and adherence to welding standards and procedures to ensure a high-quality weld.

High-strength carbon steel welding neck flanges are commonly used in industries such as oil and gas, petrochemical, power generation, and process piping systems where high-pressure and high-temperature applications are present. They are suitable for handling a wide range of fluids and gases, including steam, water, oil, and chemicals.

When selecting a high-strength carbon steel welding neck flange, it is important to consider factors such as flange size, pressure rating, temperature rating, and compatibility with the piping system. It is advisable to consult industry standards or seek guidance from a qualified engineer or supplier to ensure the correct flange is chosen for the specific application.


Industrial equipment manufacturing: 

High-strength carbon steel welding neck flanges are commonly used in the manufacturing of industrial equipment, such as pressure vessels, piping systems, and pumping stations. They provide reliable connections to ensure the safe operation and efficient performance of the equipment.

Oil and gas industry: 

In the exploration, production, and transportation of oil and gas, high-strength carbon steel welding neck flanges are used to connect pipelines, valves, and equipment. They are capable of withstanding high pressures and temperatures, ensuring the integrity and efficiency of the oil and gas operations.

Power generation: 

High-strength carbon steel welding neck flanges play a crucial role in power plants, where they are used to connect pipes in steam systems, fuel supply systems, and exhaust systems. These flanges provide secure connections that can withstand the demanding conditions of power generation processes.

Chemical processing: 

In the chemical industry, high-strength carbon steel welding neck flanges are utilized in various processes involving the handling and transportation of chemicals. They are resistant to corrosion and can withstand aggressive chemical environments, ensuring the safety and reliability of the chemical processing operations.

Construction and infrastructure projects:

 High-strength carbon steel welding neck flanges find applications in construction projects, such as building structures, bridges, and water supply systems. They are used to connect pipes and provide a strong and leak-proof joint, ensuring the integrity and longevity of the infrastructure.

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A: We are manufacturer , and doing this business for more than ten years

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