procurement of pipe gi and cs - 5 items , pipe g.i class `c heavy screwed ends without coupling pipe thickness & spec per is 1239/79 bss 1387/67 (in length of 5-7 mtrs) wall thickness: minus tolerance 3% only size: 1-1/2 inch acceptable make: manufactur ed in india only quantity provision : +/-10% (at the discretion of mfl) , pipe carbon steel seamless to spec a106 gr.b, ansi dim b36.10 bevelled / plain ends (in length of 5-7 mtrs) size: 1-1/2 inch sch 80 acceptable make: manufactur ed in india only quantity provision : +/-10% (at the discretion of mfl) , pipe carbon steel seamless to spec astm a106 gr.b, ansi dim b36.10 bevelled ends (in length of 5-7 mtrs) size: 8 inch sch 80 acceptable make: manufactur ed in india only quantity provision : +/-10% (at the discretion of mfl) , pipe carbon steel seamless to spec astm a106 gr.b, ansi dim b36.10 bevelled ends (in length of 5-7 mtrs) size: 6 inch sch 40 acceptable make: manufactur ed in india only quantity provision : +/-10% (at the discretion of mfl) , pipe carbon steel seamless astm a106 gr.b, bevelled ends (in length of 5-7 mtrs) size: 8 inch sch 20 acceptable make: manufactur ed in india only quantity provision : +/-10% (at the discretion of mfl)