• - 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 involving the processing method of large diameter thick wall seamless steel pipe, namely the pipe expanding machine, including the following steps:  

Billet smelting and treatment, the ingot (or billet) is the raw material of pipe, the selection of cold ingot, ingot surface cracks to be cleaned and polished, pits and cleaning pits to be special treatment to prevent folding, ingot riser and bottom must be removed;  The billet is heated before forging. The billet can not be directly sprayed into the billet by vertical heating flame. In addition, the billet is heated to below 1290℃ by gas fuel, and the heating rate is 50 ~ 150℃ / h.  Forging materials and processing defects, the blank is descaled, that is, the oxide scale around the blank is beaten off to prevent the oxide scale from falling into the die and forming surface defects in the forging process;  The invention has simple operation process, reasonable design, avoids waste products, reduces raw material and energy consumption, significantly improves labor productivity, and thus brings good economic benefits.  

The main function of the medium frequency heating pipe expanding machine is to change the steel pipe into the inner diameter of its own needs. The steel pipe through the pipe expanding machine will not change the thickness of the steel pipe, but only change the length.  The working principle of the medium frequency heating tube expanding machine is electromagnetic induction technology. The steel pipe is heated and expanded through the mandrel. Electromagnetic induction technology heating fast, simple operation, stable and reliable, good stability.  Using hydraulic power, power and stable work.  Medium frequency heating tube expanding machine can be manually or fully automatic.  

The medium frequency heating and tube expanding machine is mainly composed of the frame, the main cylinder support plate, the movable push plate, the front support, the medium frequency induction heating coil, the tube expanding mold mandrel.  

The medium frequency heating tube expanding machine can expand tubes of different inner diameter according to the different needs of customers. The company will try our best to meet all the needs of customers.  Manufacturing personnel to carry out product installation and debugging and after-sales treatment.  Welcome new and old customers to visit.