bids are invited for hardware items h p semless pipe , g i elbow , gi pipe , g i tee socket , g i union socket , teflon tape , g i socket , g i ball valve , plumber block , plumber block , c i plumber block , ss hex bolt , ss allenkey bolt - h p semless pipe - h.p semless pipe - sch 40 size - 3 inch ( 80 mm) length - 4.800 mtr long ( 15 length ) pipe thk- 5.49 mm , g i elbow - g.i. elbow size1/2 inch , gi pipe - g.i pipe size 1/2 inch , g i tee socket - g.i tee socket size 1/2 inch , g i union socket - g.i union socket , teflon tape , g i socket - g.i. i socket size 1/2 inch , g i ball valve - g.i. ball valve size 1/2 inch , plumber block - plumber block sn-513 , plumber block - plumber block - sn 516 , c i plumber block - c.i plumber block sn- 518 , c i plumber block - c.i plumber block sn- 511 , plumber block - plumber block sn 610 , ss hex bolt - ss hex bolt size - 1/2 inch x 2 inch , ss allenkey bolt - ss allenkey bolt size - 1/2 inch x inch