supply of industrial safety helmet , industrial safety helmet. material shall be as per clause 3 of is 2925 or latest hdpe mat erial with air vent holes at least 03 holes per side, size 520-600 mm with ratchet fit adjustable & chin strap adjustable. railway logo to be printed on the shell in postal red colour. the supplier should sub mit test report from central govt/nabl/ilac accredited lab to prove conformity to specification. the sup plier should submit test reports and certifications along with supply material. required colour: yellow- 250, white-50. [ warranty period: 12 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]