bids are invited for fabrication and repairs of pipelines or equipment mse with rt , cs pipe butt welding of 3 inch with rt , erection and commissioning of ss cs antinit aluminium pipes like hydro pneumatic testing and assembly to the lines cleanliness checks zero point five inch to 2 inch , erection commissioning of cs ss antinit aluminium pipes like hydro pneumatic testing and assembly to the lines cleanliness checks 3 inch to 6 inch , erection commissioning of cs ss antinit aluminium pipes like hydro pneumatic testing and assembly to the lines cleanliness checks 8 inch to 10 inch , erection commissioning of cs ss antinit aluminium pipes like hydro pneumatic testing and assembly to the lines cleanliness checks 12 inch and above , repair welding to various aluminium tanks such as product acid tank raw acid tanks main storage tanks n2o4 crude tank absorption tower bleaching column acid cooler columns condensers liquefiers etc , repairs welding to spoints equipments such as n2o4 tanks dna tanks dpointm water tanks columns and others equipmentspoint , repair welding to mpoints equipments such as heat exchangers tanks and other equipmentspoint , cutting removal and shifting of ss cs antinit aluminium pipes lines size zero point five inch to 2 inch , cutting removal and shifting of ss cs ss antinit aluminium pipes size 3 inch to 6 inch , cutting removal and shifting of ss cs ss antinit aluminium pipes size8 inch to 10 inch , cutting removal and shifting of ss cs ss antinit aluminium pipes size 12 inch and above , cutting and removal of existing mpointspoint structural supports and platforms channels angles plates and handrailspoint , fabrication and erection of structural steel by smaw process 2 46 total quantity : 17735