Industrial Long Weld Neck Flanges

Industrial Long Weld Neck Flanges, with their extended tapered neck structure and integral forging process, are designed for harsh operating conditions involving high pressure, high temperature, strong corrosion, and drastic temperature fluctuations. They are widely used in critical fields such as petroleum, chemical, power, metallurgy, and oil and gas transportation. Unlike ordinary weld neck flanges, their extended neck design allows for a smooth transition between the flange and the pipeline, effectively dispersing welding stress, improving connection rigidity and fatigue resistance. They can be directly connected to high-pressure pipelines and pressure vessels, and are compatible with all pressure ratings from Class 150-2500 and PN6-PN250. Perfectly meeting the core requirements of high pressure, high temperature, and leak prevention in industrial scenarios, they are essential connectors for high-end industrial projects.

 Optimal Stress Dispersion, Safe and Leak-Free: The extended tapered neck, integrally forged without seams, achieves a seamless transition between the flange and the pipeline, significantly reducing stress concentration at the weld. It can withstand frequent pressure shocks and temperature fluctuations, effectively reducing the risk of cracking and leakage. Suitable for high-risk conditions such as flammable, explosive, and corrosive media, it ensures more stable long-term operation.

 High pressure and high temperature adaptability, comprehensive operating condition coverage: Precisely adaptable to Class 150/300/600/900/1500/2500 pressure ratings, full specifications from PN6 to PN250, withstands extreme temperatures from -196℃ to 650℃ (adjusted according to material), meeting the usage requirements of various harsh industrial scenarios such as oil extraction, nuclear power, and coal chemical industry, with strong versatility.

 Complete standards, globally compatible and interchangeable: Manufactured strictly according to mainstream international standards, fully compliant with ASME B16.5, ASME B16.47, ASTM A105/A182, EN1092-1, DIN, JIS, API, and other standards, with precise dimensions and strict tolerances, allowing seamless connection with various global piping systems, strong interchangeability, and no need for additional adaptation adjustments.

Henan Tieyao Trading Co., Ltd. in Anyang, Henan Province, with our own factory, we maintain a healthy inventory of over 1,700 conventional vacuum products, ensuring prompt shipment for standard purchases. Our dedicated R&D team specializes in new designs and special requirements. We accept OEM/ODM orders and have established strong relationships with clients from East Asia, South Asia, North America, Europe, and Oceania. Nearly 99% of our international customers order again, and another 96% are repeat customers. To foster long-term relationships, we offer preferential discounts to returning customers and repeat orders. We understand that in an ever-changing market environment, competitive pricing, high-quality products, and attentive service are the keys to our success. We are committed to improving our business with reliability, professionalism, and compassion, all with a progressive perspective.

Q1: What are the details of your after sales service?

A1: We provide the necessary technical support to all of our customers, such as material performance and heat treatment data advice.

Q2: How could I get a sample?

A2: Before we received the first order, please afford the sample cost and express fee. We will return the sample cost back to you within your first order.

Q3:It's my first time to import steel products, can you help me with it?

A3:Sure,we have agent to arrange the shipment, we will do it together with you.

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