supply of isi marked galvanized mild steel tubes with isi marked socket ( g . i . pipe ) , g . i . pipe , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 15 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 20 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 25 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 32 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 40 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 50 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 65 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 80 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 100 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 125 mm nb , medium class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs length , is; 1239 ( part-1 ) 2004 with uptodate amendment with isi marked socket/socketed on one end and the other end protected with a plastic thread protector . size:- 150 mm nb , 3mtr . long riser pipe medium class: isi marked galvanised mild steel tubes is: 1239 ( part-1 ) 2004 with uptodate amendment with isi marked seamles socket . socketed on one end and other end protected with plastic thread protector . size-32mm nb , 3 mtr . long riser pipe medium class: isi marked galvanised mild steel tubes is: 1239 ( part-1 ) 2004 with upto date amendments with isi marked seamless socket . socketed on one end and other end protected with plastic thread protector . size-65mm nb , heavy class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs . long is: 1239 ( part-1 ) 2004 with upto date ammendments . with isi marked socket /socketed on one end and other end protected with plastic thread protector . size: 50 mm nb , heavy class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs . length is: 1239 ( part-i ) 2004 with upto date ammendments . with isi marked socket /socketed on one end and other end protected with plastic thread protector size: 65 mm nb , heavy class: isi marked galvanised mild steel tubes , erw/ hfiw/hfw type screwed , 4 to 7 mtrs . length is: 1239 ( part-1 ) 2004 with upto date ammendments . with isi marked socket /socketed on one end and other end protected with plastic thread protector size: 80 mm nb