We are a leading supplier of seamless carbon steel tubes in China, offering high-quality ASTM A179 tubes designed for heat exchangers and boilers. These tubes feature a 3/4-inch diameter (DN20), with an outer diameter of 19.05 mm and a wall thickness of 2.11 mm. Equipped with plain ends, our carbon steel tubes provide exceptional durability and performance in demanding industrial applications. Trust us to deliver reliable, precision-engineered products that meet your specific requirements, ensuring the highest standards of quality and efficiency.