bids are invited for 25 mm dia - ms pipe , 40 mm dia - ms pipe , 25 mm dia - ball valve , 40 mm dia - ball valve , ms pipe , non return valve - nrv , needle control valve - valve , manifold valve - valve , brass coupling - coupling , brass coupling 1 - coupling , nut bullnose - nut , gas filter 1 - filter , cylinder pipe 3 - pipe , adapter , m s pipe dbc - ms pipe , burner pipe 4 - pipe , adjustable regulator f type - regulator , pressure gauge 4 - gauge , m s elbow - elbow , seamless reducer up to 2 ibr - reducer , regulator 2301 20p - regulator , teflon tape - tape , special clamp up to 2 - clamp , angle clamp up to 2 - clamp , m s gas bank double deck - bank , installation charges - installation , pneumatic testing - installation , png gas leakage detector - detecotr , 8 zone control panel processor - panel , hooter for alarm - hooter , solenoid valve - valve , 2 3 4 core cable - cable , flexible conduit - conduit , power booster for 8 zone panel - power booster , installation charges gas leakage system - installation , detector installation and calibration - installation total quantity : 903