The features of LD10 three-roller cold pilger mill : 
1. The main conveying system is with V belt which can make sure equal force , creditable and stable function . 
2. The precision of steel pipe is high enough to be manufactured thin-wall pipe with three-roller . 
3. The rolling mill adopts edge feeding way removing the mandrel comparing to the side feeding . The exact location of mandrel on the deformation zone and short rolling line not only  suit for rolling long tube billet but also improve the roller’s efficiency .
4. It is convenient to change and maintain the roller. 
5. Monofilament thread rod feeding way is stable and which is assisted by the top tray rotation . 
6. The Mairtai type rotary feeding way is precise , stable and reliable .

LD-20 3-high pipe cold rolling mill is improved developed from the LD8-15II pipe cold rolling mill which is designed by original Xi’an Heavy Industries Institute, based on the produce practice and the load evaluation in our factory, according to the application situation and suggestions of users.
Rolling principle of this machine is described briefly as: 3 roller, which is at the angle of 120° with each other on the cross section in rolling direction, roll reciprocally along the sliding tables of 3 working faces those are of certain curve shapes. By doing this, the rolling grooves will be changed and it could finish rolling the pipe billet between the pushing head and the roller. The billet is charged further by the interval turning feed which synchronizes with the reciprocal movement. After all of these finish, a complete rolling course finishes.
Finished pipes rolled by this machine are of high precision, nice surface quality and improved mechanical performances. They are fit for being produced into various steel pipes, non-ferrous pipes and alloy pipes with high precision, high strength and thin pipe wall, including briefly 20, 45, 30CrMnSiA, 1Cr18Ni9Ti etc.

The features of LD20 three-roller cold pilger mill :
1. The main conveying system is with V belt which can make sure equal force , creditable and stable function .
2. The precision of steel pipe is high enough to be manufactured thin-wall pipe with three-roller .
3. The rolling mill adopts edge feeding way removing the mandrel comparing to the side feeding . The exact location of mandrel on the deformation zone and short rolling line not only  suit for rolling long tube billet but also improve the roller’s efficiency .
4. It is convenient to change and maintain the roller.
5. Monofilament thread rod feeding way is stable and which is assisted by the top tray rotation .
6. The Mairtai type rotary feeding way is precise , stable and reliable .

1.The main conveying system is with V belt which can make sure equal force , creditable and stable function . 
2. The precision of steel pipe is high enough to be manufactured thin-wall pipe with three-roller . 
3. The rolling mill adopts edge feeding way removing the mandrel comparing to the side feeding . The exact location of mandrel on the deformation zone and short rolling line not only  suit for rolling long tube billet but also improve the roller’s efficiency .
4. It is convenient to change and maintain the roller. 
5. Monofilament thread rod feeding way is stable and which is assisted by the top tray rotation . 
6. The Mairtai type rotary feeding way is precise , stable and reliable .

1. The main conveying system is with V belt which can make sure equal force , creditable and stable function . 
2. The precision of steel pipe is high enough to be manufactured thin-wall pipe with three-roller . 
3. The rolling mill adopts edge feeding way removing the Decoring rod comparing to the side feeding . The exact location of mandrel on the deformation zone and short rolling line not only  suit for rolling long tube billet but also improve the roller’s efficiency .
4. Electric-control feeding and discharging way improve the working efficiency .
5. It is easy to change and maintain the roller . 
6. Twin-wire feeding way realize the stable feeding. 
7. To tighten with hydraulic mandrel lowers the labor strength .
8. The Mairtai type rotary feeding way is precise , stable and reliable .

1. The main conveying system is with V belt which can make sure equal force , creditable and stable function . 
2. The precision of steel pipe is high enough to be manufactured thin-wall pipe with three-roller . 
3. The rolling mill adopts edge feeding way removing the Decoring rod comparing to the side feeding . The exact location of mandrel on the deformation zone and short rolling line not only  suit for rolling long tube billet but also improve the roller’s efficiency .
4. Electric-control feeding and discharging way improve the working efficiency .
5. It is easy to change and maintain the roller . 
6. Twin-wire feeding way realize the stable feeding. 
7. To tighten with hydraulic mandrel lowers the labor strength .
8. The Mairtai type rotary feeding way is precise , stable and reliable .