IS 939 : 1977 SPECIFICATION FOR SNATCH BLOCK FOR USE WITH FIBRE ROPE FOR FIRE BRIGADE USE
UDC 614.842.866.5 : 621.861.2 | CED 22 |
Reaffirmed 2018
1. SCOPE
1.1 This standard specifies the requirement regarding material, shape and the performance requirement for the snatc,h blocks for use with fibre ropes for working load up to 4 900 N (500 kgf).