Tender For supply of thermoplasticpolyurethane spring pads ( [thermoplasticpolyurethane spring pads (happy pads) for secondary springs of 3 phase locos as per ref. no. 1 of s.c. rly drg. no. c/els/lgd/bogie/3/140, alt-2 & rdso spec no. mp.0.40.99.01 rev. 03, august 2017.]