supply of copper pipe (3/8 inch) required for modification of horn in dpwcs kavach fitted in wag9hc locos.copper pipe (3/8 inch) required for modification of horn in dpwcs kavach fitted in wag9hc locos.,copper pipe (3/8 inch) required for modification of horn in dpwcs kavach fitted in wag9hc locos, size: od- 9.5mm x id- 6.3mm x thickness 1.6mm. (note: one meter sample approved before bulk s upply.) [ warranty period: 30 months after the date of delivery ] ] , set of items required for modification of horn in dpwcs kavach fitted in wag9hc locos. set consists of 5 items as per annexure attached. (note: one set of sample approved before bulk supply.) [ wa rranty period: 30 months after the date of delivery ] ]