procurement of erw pipe for replacement of damaged underground fire water line by new over-ground line at plant different areas of bktpp. procurement of erw pipe for replacement of damaged underground fire water line by new over-ground line at plant different areas of bktpp. , erw pipe,300nb x 6.35mm,length:6 m each # erw pipe,size: 300nb x 6.35mm thickness as per is-3589,pipe length:6 mtr each additional data: heavy grade pipe bevelled end. , pipe,ms black erw,250 nb additional data: pipe length:6 mtr each;heavy grade pipe bevelled end , pipe,ms black erw,200nb,bevelled end is-3589,heavy grade pipe additional data: pipe length:6 mtr each;heavy grade pipe bevelled end. , pipe,ms black erw,150nb,thickness:5.4mm is-1239(part-i) heavy grade pipe bevelled end additional data: pipe length:6 mtr each; , pipe,m s black erw 100nb additional data: pipe length:6 mtr each;heavy grade pipe bevelled end , erw pipe,ms black,bevelled end 80nb # m s black erw pipe is-1239(part-i) heavy grade pipe bevelled end 80nb additional data: pipe length:6 mtr each;