Supply Of Pipe Od 168.3 X 10.97 Thk Sa106grb As Per Tdc Ps019 Rev- 00 (bhel - Hpvp) , Pipe Od 406.4 X 21.44 Thk Sa106grb (nace+ H) As Per Tdcpv-sp_ Tdc-003 Rev-02 (bhel-hpvp). (EXPIRED)