Air Brake Pipe And Pipe Fitting (Bp) For Boxnhl Wagon As Per Drg.No. Wd-09082-S-02, Item N O. 1,3,5,6,7 Alt-01 Or Latest As Per Annexure Attached. Material As Per Rdso Letter No. Mw/Apb Dt. 02.08.2 019 As Seamless To Is: 1239 (Part-I) Heavy Grade Or Astm A-106 Gr. A [ Warranty Period: 30 Months Aft Er The Date Of Delivery ] ]