Preparation Of Fabrication Detail Drawing For Secondary Supports In Connection With Composite Works For Pdh Unit For Gail Usar Pdh-Pp Project At Usar, Alibag, Raigad, Maharashtra. /// Preparation Of Fabrication Detail Drawing For Secondary Support In Respect Of Composite Works For Pdh Unit Under Gail Usar Pdh-Pp Project Located At Usar, Alibaug District, Raigarh District, Maharashtra.