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CASTORS FIXED TO STEEL SECTION BY BASHING PLUGS INTO THE END OF THE SECTION OR WELDING, DRILLING BOLTING USED FOR A HUNDRED YEARS ON TROLLEYS, CRADLES, HOSPITAL BEDS, PORTABLE CRANES, ACCESS LADDERS ETC ETC ......... THE MD OF THE ‘ACME FABRICATION, WELDING AND BOLTING CASTOR-FIXING ENGINEERING COMPANY’. TOLD ME ‘THE WHOLE INDUSTRY IS VERY HAPPY WITH OUR CURRENT METHOD’ OF FIXING CASTORS’
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