supply of brazing alloys ( ba cu zn3 ) 6.3mm dia , brazing alloys ( ba cu zn3 ) 6.3mm dia. rod shall have chemical composition .cu=59-61 % , tin = 0.8 - 1.2% , iron - 0.15%, antimony = 0.05% , lead = 0.5 % , bismuth = 0.05% arsenic - 0.05 % , zn = remainder , other elements total max = 0.1% ,is : 2927 - 1975 .firm will be required to furnish test certificate for above chemical composition confirming to is:2927-1975 materi al test certificate required from nabl accredited lab.party to submit oem / authorization with warrant y. sample to be get approved before bulk supply. (shop no.03) [ warranty period: 30 months after th e date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]