bids are invited for flange,400mmnb,weldneck,raised,300class - flange, forged carbon steel, weld neck,raised face type as per ansi b-16.5, material to astm a-105,ansi 300 class rating along with necessaryhigh tensile stud bolts and nuts inculding washer.material for studbolt-astm a-193,gr.b.7 and for nuts astm a-194 gr.2h nom. size;400mmnb,bore:393.6mm, pipe details od pipe:406.4mm, wall thickness:6.4mm, pipespec.:api5l gr.46. , flange,350mmnb,weldneck,raised,300class - flange, forged carbon steel, weld neck,raised face type as per ansi b-16.5, material to astm a-105,ansi 300 class rating along with necessaryhigh tensile stud bolts and nuts inculding washer as per ansi b16.20standard (latest edition). material for stud bolt-astm a-193,gr.b.7 andfor nuts astm a-194 gr.2h nom. size: 350mm nb,bore:342.8 mm, pipe details od pipe: 355.6 mm, wall thickness:6.4mm,pipe spec.:api5l gr. x60. , flange,300mmnb,weldneck,raised,300class - flange, forged carbon steel,weld neck, raised facetype as per ansi b-16.5, material to astm a-105,ansi 300 class rating along with necessary high tensile stud bolts and nuts inculding washer.material for stud bolt-astm a-193,gr.b.7 and for nuts astm a-194 gr.2h nom. size;300mmnb,bore:311.1mm, pipe details od pipe:323.9mm, wall thickness:6.4mm, pipe spec.:api5l gr.46. , flange,200 mm nb,weld neck,rtj,600class - flange, forged carbon steel, rtj typeweld neck as per ansi b-16.5, material to astm a-105,ansi 600 class rating along with necessary rtj gasket(r-49) and high tensile stud bolts and nuts inculding washer. material for stud bolt-astm a-193,gr.b.7 and for nuts astm a-194 gr.2h nom. size;200mmnb, bore:206.3mm, pipe details od pipe:219.1mm, wall thickness:6.4mm,pipe spec.:api5l gr.46. , flange,150mm nb,weld neck,rtj,600class - flange, forged carbon steel,rtj typeweld neck as per ansi b-16.5, material to astm a-105,ansi 600 class rating along with necessary rtj gasket(r-45) and high tensile stud bolts and nuts inculding washer.material for stud