supply of tube m.s.galvanised medium grade 50mm duly isi marked galvanised mild steel tubes electrical resistances welded ( erw ) / high frequency induction welded ( hfiw ) / hot finished welded ( hfw ) confirming to is:1239 ( part-i ) / 1990 ( fifth revision ) with amdt. no.1 to 5. screwed at both ends as per is:554 / 1985, socketed at one end and other end protected with plastic thread protector. the socket confirming to is:1239 ( part-ii ) / 1992 ( fourth revision ) with amdt. no. 1 in random length of 4 to 7 mtrs.tube m.s.galvanised medium grade 50mm duly isi marked galvanised mild steel tubes electrical resistances welded ( erw ) / high frequency induction welded ( hfiw ) / hot finished welded ( hfw ) confirming to is:1239 ( part-i ) / 1990 ( fifth revision ) with amdt. no.1 to 5. screwed at both ends as per is:554 / 1985, socketed at one end and other end protected with plastic thread protector. the socket confirming to is:1239 ( part-ii ) / 1992 ( fourth revision ) with amdt. no. 1 in random length of 4 to 7 mtrs., tube m.s.galvanised medium grade 50mm duly isi marked galvanised mild steel tubes electrical resistances welded ( erw ) / high frequency induction welded ( hfiw ) / hot finished welded ( hfw ) confirming to is:1239 ( part-i ) / 1990 ( fifth revision ) with amdt. no.1 to 5. screwed at both ends as per is:554 / 1985, socketed at one end and other end protected with plastic thread protector. the socket confirming to is:1239 ( part-ii ) / 1992 ( fourth revision ) with amdt. no. 1 in random length of 4 to 7 mtrs. dycmm ( m ) , parel , cr maharashtra 336.00 metre smm ( g ) currey road , cr maharashtra 355.00 metre