supply of 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. nominal bore 50 mm. quality medium class. ( rc item no. 46 ) [ warranty period: 30 months after the date of delivery ] general stores depot madhya pradesh 3181.00 metre => limited