IS 6248 (1979): Metal Rolling Shutters and Rolling Grills
Whereas the Parliament of India has set out to provide a practical regime of right to ... the main component parts of rolling shutters shall be defined as given in 2.1 to 2.12 ( see also Fig. 1 ) ... 2.11 Roller --.The entire rolling portion at the top of the shu ter includ- ing the suspension shaft, the pulleys, the springs and ball bearing ...
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