Looking for precast concrete sewer manholes

RFQ Description

Dear Sir,We are one of the contractors selected to bid on the Riyadh Township Projects. One of the requirements is the supply of Pre-cast sewer manholes. The description and quantity are in the attached BOQ. Please assist us in providing our Client the best price valid for a period of 3 months at which time we could possibly place an order if the bid is won..Thank you,Victor JavilagonCost Engineer JBSS-Azmeel ContractingDammam,K.S.A.email *******@*****.com; *******@*****.com WORK - MANHOLES AND PIPE WORK  ANCILLARIESManholesPrecast reinforced concrete sanitary manholes, conforming to ASTM C478, Work includes supply and installation of precast concrete/Fiberglass manholes with cast iron heavy duty frames and covers (BS 497)/recease heavy duty manhole cover, including excavation in all types of soil backfilling, dewatering (if needed) concrete work with formwork and reinforcement, benching, steps iron including PVC coated galvanized access ladder , pipe connection to manhole, damproofing for external surfaces and two coats of solvent free Epoxy for intern surface, inlet and outlet pipe short piece and all work neccessary to complete the job including back drop, etc... complete in all respect as per specifications, drawings and direction of supervision engineer.Manholes 1200 DiameterDepth to invert = 1.5m205nrDepth to invert 1.5 - 2m179nrDepth to invert 2 - 2.5m61nrDepth to invert 2.5 - 3m25nrDepth to invert 3 - 3.5m32nrDepth to invert 3.5-4.0m28nrDepth to invert 4.0-4.5m6nrDepth to invert 4.5 - 5.0m2nr