Home page

Long-neck flange

The company is equipped with over 80 sets of forging and processing equipment, including a 4,000‑ton forging hydraulic press, a 4,000‑mm ring‑rolling mill, and heat‑treatment facilities. It also boasts 18 units of inspection and testing equipment, such as full‑quantitative and portable spectrometers, room‑temperature and high‑temperature tensile testers, ultra‑low‑temperature impact testers, and digital ultrasonic flaw detectors. The facility has an annual production capacity of 30,000 tonnes of forgings made from carbon steels, alloy steels, stainless steels, and nickel‑based alloys, with the largest forgings featuring a maximum billet outer diameter of 4,000 mm.

Category:

Non-standard flange

Qualification Certificate

Equipment Display

Partner

Product Inquiry Phone:

0519-86211051

Get a quote

Product Description

A long‑neck flange is a specially shaped flanged fitting characterized by a relatively thin flange body and an extended neck. This design enables the long‑neck flange to deliver superior strength and sealing performance when connecting pipelines and equipment.

One of the advantages of a long‑neck flange is its ability to effectively reduce stress concentrations between pipes and equipment, thereby enhancing connection reliability and service life. Its extended neck design also simplifies flange‑to‑flange connections, making installation and removal operations more convenient.

Long‑neck flanges are suitable for a wide range of piping systems, particularly in applications subjected to high pressure and temperature. They can be used in industries such as petroleum, chemical processing, and pharmaceuticals, as well as in civil engineering projects like water supply and wastewater management.

When selecting a long‑neck flange, it is essential to consider the pipeline’s operating conditions, pressure, and temperature to ensure that the chosen flange meets the required specifications. Additionally, attention should be paid to the manufacturing quality and material selection of the long‑neck flange to guarantee its excellent corrosion resistance and high‑temperature performance.

In summary, the long‑neck flange is a specially shaped connection component that, thanks to its uniquely designed long neck, delivers superior strength and sealing performance, making it widely used in various piping systems.

关键词： Long-neck flange

Why Choose Us

The company is equipped with over 80 sets of forging and processing equipment, including a 4,000‑ton forging hydraulic press, a 4,000‑mm ring‑rolling mill, and heat‑treatment facilities. It also boasts 18 units of inspection and testing equipment, such as fully quantitative and portable spectrometers, room‑temperature and high‑temperature tensile testers, ultra‑low‑temperature impact testing machines, and digital ultrasonic flaw detectors. The facility has an annual production capacity of 30,000 tons of forgings made from carbon steels, alloy steels, stainless steels, and nickel‑based alloys, with the largest forgings featuring a maximum billet outer diameter of 4,000 mm.

Testing equipment

Processing equipment

Medium-pressure jacketed flange