Details: Steel tube galvanised ISI mark in random length of 4 to 7 mts. at both ends socketed at one end and other end protected with plastic protector, nominal bore 20 mm medium class, socketshall also be ISI marked." specn: Material Spec : IS-1239 (Pt-I) : 2004 for tube, IS:1239 (Pt.2): 2011 for socket and IS:554:1999 for pipe thread
Sector: Railways