KOCKS - Know-how for tomorrow

Tube Mills

Since 1950 KOCKS has been building 3-roll Stretch Reducing Mills for the production of seamless and welded tubes. KOCKS' rolling mills allow economic and reliable production of steel tubes in different dimensions and qualities. The individually dimensioned rolling mills guarantee high productivity and low operating costs – in short: more competitiveness.




KOCKS Rotation Mill [KRM]

4-roll cross-roll elongator for shell production in seamless tube mills


Shell dimensions:

• diameter: 125 mm and 195 mm 

• wall thickness: 3.5 – 40.0 mm 

• length: up to 60 meters


to produce finished tube sizes of Ø 17.2 – 177.8 mm (5/8“ – 7.000“)


Extractor [EXB]

to "extract" the mandrel in a seamless tube mill

to produce finish tube sizes of Ø 17.2 mm – 406.4 mm (3/8" – 16.000“)


Tube Sizing Block [TSB]

for sizing of tubes within the dimension range

of Ø 17.2 mm – 406.4 mm (3/8" – 16.000")


Stretch Reducing Block [SRB]

for stretch reducing of seamless and welded tubes

of Ø 10.2 mm – 277.2 mm (0.405" – 10.750")


Rotating Hot Saw [RHS]

to exactly separate tubes to special or standard dimensions as well as to crop head and tail ends of the tube within the dimension range of Ø 10.2 mm – 244.5 mm (0.405" – 9.625")