Steel tube galvanized 32mm bore, medium class, ISI marked to IS: 1239 ( Part- 1 )/ 2004 with amndt. 4 in random length of 4 to 7 mtrs. Screwed at both ends as per IS: 554/ 1999 with Amndt. 1, socketed at one end and other end protected with plastic threaded protector Socket confirming to IS: 1239 ( Part- 2 )/ 2011 medium class of G. I. Pipes.