The outer diameter of hot-rolled seamless pipes is generally larger than 32mm, with a wall thickness ranging from 2.5mm to 75mm. The outer diameter of cold-rolled seamless pipes can reach 6mm, and the wall thickness can be as low as 0.25mm. For thin-walled pipes, the outer diameter can reach 5mm, and the wall thickness is less than 0.25mm. Email：admin@zhongtangsteel.cn WhatsApp：+86 15864006163…
