What size is a long weld neck flange?
Long Weld Neck Flanges come in different sizes, but the most common sizes range from 1/2 inch to 24 inches in diameter. The length of the weld neck varies depending on the diameter of the flange. For example, a 6-inch flange might have a 4-inch long weld neck, while a 24-inch flange might have a 10-inch long weld neck.
What is Long Weld Neck Flanges?
Long Weld Neck Flanges are a type of pipe flange with a long, tapered neck that is butt-welded to the pipe. They are used in high-pressure applications, such as oil and gas pipelines, where their long neck provides additional reinforcement & reduces stress concentrations at the base of the flange. They are also used in applications where the pipeline needs to be insulated, as the long neck provides space for the insulation material.
Why use Long Weld Neck Flange?
The primary reason to use a Long Weld Neck Flange is its ability to reduce stress concentrations and provide additional support to the pipeline. The long neck allows for a smooth transition from the pipe to the flange, which helps to distribute stresses more evenly and reduces the risk of fatigue failure. Additionally, the long neck provides ample space for welding and insulation, which can further enhance the integrity & performance of the pipeline.
| Size | 1/2″-24″
26″-48″ |
| Thickness | sch5, sch5s, sch10s, sch10, sch20, sch30, sch40, sch40s, sch80s,STD, SCH60, XS, sch80, sch100, sch120, sch140, sch160, XXS, or as per your requirement |
| Standard | ASME B16.5, ASME B16.47A, ASME B16.47B, MSS SP 44, DIN 2632, DIN2633, DIN2634, DIN2635, DIN2636, JISB2220, BS4504, GB, etc |
| Mterial |
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| Surface | usually paint black, galv., for carbon steel bend and alloy steel bend, and for stainless steel bends we usually dont do anything on the surface |
| Certification | ISO 9001:2015 |
| Packing | plywood cases, pallets, or as per your request. |
| Application | Petroleum, chemical, machinery, electric power, shipbuilding, papermaking, construction etc |
