tender for bolster spring (outer) drawing no.:- w/be-3210, alt (nil) specification:- wd-01-hls-1994(rev. 3 of jan 2009)and amendment no. 4 of oct.2020 special term & condition: - [ i] firm to ensure complianceof para.8.2,8.3 & 8.4 of specification- wd-01-hls- 1994 (rev. 3 of jan 2009) and amendment no.-4. [ii]guarantee:- the spring shall be guaranteed for a period of five years against any defect imputable tomanufacture from the date of delivery of the spring, or for a period of four years from the date of actual fitment oncoaches, whichever is earlier.