Which company made significant milling contrivance (X axis is more than 10000mm,Z axis is more than 5000mm)?
Two companies that are currently in business making large milling machines:
Mitsubishi Heavy Industries
MAG Industrial Automation - Cincinnati Machine
P&H Mining Equipment is a company that uses big milling machines in their own manufacturing and provides immense machining services
MAG Industrial Automation - Giddings & Lewis
Giddings & Lewis has acquired some of the substantial machine tool builders of the past.
Kearney & Trecker, Warner & Swasey, LaSalle Machine Tool, and Fadal Engineering are but a few of the companies presently a part of the Giddings & Lewis family.