Gem Bids For Spirally Welded Mild Steel Pipe As Per Is 3589: 2001 Od-1016mm, Thick-10mm, Grade-fe410, Spirally Welded Mildsteel Pipe As Per Is 3589: 2001 Od- 508mm, Thick-11mm, Grade-fe410, Spirally Welded Mild Steel Pipe As Per Is3589: 2001 Od- 1626mm, Thick-14.2mm, Grade-fe410