As a leading seamless heat exchanger U-tubes factory in China, we offer high-quality carbon steel ASTM A179 tubes designed for reliable heat transfer applications. These U-tubes feature precise dimensions of 19.05 mm × 2.11 mm, ensuring excellent thermal conductivity and efficient performance. Manufactured to meet stringent industry standards, our U-tubes are ideal for use in boilers, condensers, and heat exchangers. For safe transportation and protection against damage, each shipment is securely packaged in sturdy plywood crates. Count on us for dependable solutions and exceptional product quality.