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Drill Pipe Production Equipment,
Drill Pipe Two Roll Mill,
LG90H Cold Rolling Mill
4 Inch Drill Pipe Production Equipment Two Roll Mill
Drill pipe is hollow, thin-walled, steel alloy piping that is used on drilling rigs. It is hollow to allow drilling fluid to be pumped down the hole through the bit and back up the annulus. Due to the deep depth of oil wells and bad working conditions, the mechanical properties, dimensional accuracy and straightness of drilling pipes are required to be higher.
Advantages of two roll mill
Two roll mill is an important equipment for oil well pipe producing. It has large diameter reduction and large wall reduction, during the rolling process, the mechanical properties of the material can be improved, and high-quality surface quality can be obtained.
Features of our cold rolling die and mandrel
The roll pass shape of rolling die and mandrel determines the physical properties of the finished pipes. We have developed the special rolling grooves of die and mandrel to improve the straightness and tolerance of finised drill pipes, which improve the life of drill pipes greatly.
Main parameter of LG90H cold rolling mill
|1||Out diameter of hollow pipe (mm)||φ76~φ133|
|2||Wall thickness of hollow pipe (mm)||3~15|
|3||Length of hollow pipe (m)||2~6|
|4||Out diameter of finished pipe (mm)||φ45~φ114|
|5||Wall thickness of finished pipe (mm)||2~12|
|6||Length of finished pipe (mm)||＜12|
|7||Speed of main frame (time/min.)||50~80|
|8||Stroke of main frame (mm)||1003|
|9||Feed of mother tube (mm)||1~12|
|10||Rotating angle of mother tube (°)||0~90|
|11||Outer diameter of roller (mm)||φ450|
|12||Module of roller gear||14|
|13||Radius of crank (mm)||500|
|14||Main motor||Z4-250-42 (160KW/1000rpm)|
(Above parameter is for reference, we have different types to meet different size requirement!)
Features of cold rolling mill and main compoents
The machine adopts two-ring groove rollers, photoelectric servo rotating feed, which can realize large diameter reduction, large wall thickness reduction, and rotation angle adjustment, high output, convenient maintenance, long working stroke and etc. The material is loaded after stopping, and the work is reliable, stable, using electric feeding, electric discharging, hydraulic clamping, effectively reducing labor intensity.
The machine contains discharging rack, main machine, middle bed, rotating and feeding box, mandrel clamping device, main transmission system, loading mechanism, mandrel rod, oil lubrication station, hydraulic system, electric control system.
Big belt device
Mandrel clamping device
Rotating & feeding device
More details please feel free to contact us!
Contact Person: Joanna