Welcome to our factory, where we specialize in manufacturing high-quality ASTMA6 Q235 20# seamless welded square tubes. Our product is made with precision and care to meet all of the required standards. We use only the best materials to ensure that our square tubes are strong, durable, and long-lasting. Our product is suitable for a wide range of applications, including construction, machinery, and transportation. With our state-of-the-art equipment, skilled technicians, and commitment to excellence, we guarantee that our square tubes are of the highest quality. Order from us today and experience the difference that our products can make for your project.