MANUFACTURE AND SUPPLY OF TRESTLE FOR LH [ MANUFACTURE AND SUPPLY OF TRESTLE FOR LHB COACHES AS PER DRAWING NO WR/ ML- 352/ C MANUFACTURED BY MSC CLASS HEAVY DUTY ERW PIPE CONFIRMS TO IS: 1239- 04 PART 1- 2 32MM THICK MS PLATE PROPOSED FOR TOP PLATE CONFIRMS TO IS 2062- 11- 3 FOR RIB AND BASE PLATE MS PLATE 10MM THICK PROPOSED AND CONFIRMS TO IS 2062- 11- 4 SOLID WOODEN BLOCK SIZE 390X390MM ( DRAWING ATTACHED ). PAINTED STRUCTURE OF TRESTLE BODY. ( AS PER DRAWING NO. WR/ ML 352/ C ) ]