• - Cold Forming Elbow Machine
• - Hot Forming Elbow Machine

• - Pipe End Expanding Machine
• - Full Length Pipe Expander

• - Single-Head Pipe Fittings Beveling Machine
• - Automatic Double-Head Elbow Beveling Machine
• - Automatic Triple-Head Tee Beveling Machine
• - Large Steel Pipes Beveling Machine

The processing method of large-diameter thick-wall seamless steel pipe relates to the field of mechanical processing, specifically to the processing method of large-diameter thick-wall seamless steel pipe, namely, pipe expanding machine, including the following steps:

Billet smelting and processing, steel ingot (or billet) is the raw material of tube, cold steel ingot, steel ingot surface cracks to be cleaned and polished, pits and pits generated after cleaning to special treatment to prevent folding, steel ingot riser and bottom must be removed; When the billet is heated before forging, the vertical heating flame can not be directly injected into the billet. In addition, it is appropriate to use gas fuel to heat the billet to below 1290℃, and the heating rate is 50-150 ℃ / h. Forging material and treatment of defects, the billet for descaling treatment, that is, to remove the oxide around the billet, in order to prevent the process of forging oxide into the mold and the formation of surface defects; The invention has the advantages of simple operation process, reasonable design, avoiding waste products, reducing raw materials and energy consumption, significantly improving labor productivity, and thus bringing good economic benefits.

The product set interchanged cone die hole enlargement technology, medium frequency induction heating technology, technology in one page, with its reasonable technology, low construction investment range of raw materials and products specifications suitability, flexible variable low input of production batch adaptability to replace the traditional steel pipe industry drawing hole enlargement technology, became the resolve the shortage of large diameter seamless pipe at home and abroad, Large and medium caliber welded pipe specification series is difficult to perfect the indispensable important production capacity. The composition of mechanical equipment of pipe expanding machine: pipe expanding machine mainly includes: machine base, main oil cylinder support plate (including main oil cylinder), automatic feeding structure, discharging roller table, mold support, intermediate frequency coil adjustment frame, intermediate frequency power supply, electrical control system and so on.