tender for set of alarm signal pipe (consisting of 3 items) to mtn misc.sk.-3669, alt-nil . 1) item no.1 : 10nb x 1420 mm, qty - 02 nos. (both ends 3/8 bsp threading in 15 mm length) 2) item no.2 : 10 nb x 410 mm,qty - 02 nos. (both ends 3/8 bsp threading in 15 mm length) 3) item no.3 : 10 nb x 180 mm, qty - 02 nos.(both ends 3/8 bsp threading in 15 mm length). material and specification as per drawing.