tender for supply of fine bubble diffuser(fbd) and coarse bubble diffuser (cbd) at integrated hbl plant sugauli, east ch aran bihar. , supply of fine bubble diffuser (fbd) and coarse bubble diffuser as per following details and attached tender document: , tubular fine bubble diffuser type: sd-63-1000 membrane od: 63 mm length: 1000 mm air flow rate: 8-11 m³/hr material of construction (moc): epdm (ethylene propylene diene monomer) connection size: ¾ npt (female thread) , coarse bubble disc diffuser size: 6 material of construction (moc): epdm connection: 1 male thread bubble size: 4.5 mm operating temperature: 35-85 °c type of discharge: peripheral air discharge , supply and replacement of fine bubble diffuser (fbd) and coarse bubble diffuser as per the following details and attached tender document: , fine bubble diffuser with inner metallic thread size: 63x1000 mm, epdm model no-n-f-63-1000e with ss socket and ss clamp , replacement of damaged fine bubble diffuser. (without material)