Arsen Welding Neck Metal Expansion Joints deliver exceptional pipeline performance by absorbing severe thermal expansion and vibrations within high-pressure, high-temperature networks. Constructed from premium-grade stainless steel bellows and heavy-duty carbon steel welding ends, they provide a permanent, leak-free, and monolithic bond that eliminates mechanical joint failures. Available in a wide variety of pipe sizes and schedules, their pre-beveled design allows for a fast, precise, and straightforward field welding installation.