1. Preheating Preheating helps reduce the peak hardness of the heat-affected zone (HAZ) of medium-carbon steel and prevents cold cracking. It is a key process measure for welding medium-carbon steel. Preheating also improves joint plasticity and reduces post-weld residual stress. Typically, the preh Read More

Due to the varying properties of seamless square tubes, the material exhibits different behaviors. Mechanical properties are based on static stress. Whether performing static tensile tests or hardness tests, the stress is applied slowly to the specimen or workpiece. However, in actual production, ma Read More

Thank you to our Indonesian customers for their trust! The third batch of seamless steel pipes (size Φ219×10mm) has been loaded and shipped within 20 hours. Our dedicated "land + sea" solution saves 30% of shipping time compared to traditional logistics. The next batch is already scheduled, and we l Read More