Low-bed semi-trailers are suitable for transporting various large equipment, machinery, engineering materials and other heavy goods. Its flat structure makes loading and unloading of cargo more convenient, and the loading and unloading of cargo can be ach
In hot rolling pipe mill, pipe billet piercing procession is the first procedure of seamless steel tube processing.The piercing mill with guide disc is widely used. Guide disc is a guide device of the piercing mill frame, which is used to form the closed
Pipes are developped from solid round steel billets. The billet is charged into a rotary hearth furnace. After the billet is discharged from the rotary hearth furnace, a small hole is punched into its end.