37830 ⎘
Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group ; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs Interchanging mandrels, fixing plugs on mandrel rods or cooling during interchanging mandrels
Rolling mill for rolling concave, rod-shaped bodies
#2Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine
#3Manufacturing method and manufacturing apparatus of seamless metal pipe
#4Manufacturing method of seamless metal pipe, mandrel mill, and auxiliary tool
#5Method and device for the optimized circulation of rods in the production of a seamlessly hot-fabricated steel pipe according to the continuous pipe method
#6Mandrel holder head with release device
#7Piercing and rolling plug, method of regenerating such piercing and rolling plug, and equipment line for regenerating such piercing and rolling plug
#8Seamless tube piercing/rolling plug, and seamless tube producing method using same
#9Seamless tube piercing/rolling apparatus, and seamless tube producing therewith