3, pre-installation civil contractor shall provide the following technical data: inspection records (1) The main equipment and building foundation; a reference point (2) of the building, the baseline; (3) the basis of concrete strength equipment and buildings settlement data. 4, to participate in the installation and construction personnel familiar with the structure of the host group and the installation process, the installation quality requirements, safety precautions. 5, the unit is installed and install centerline elevation determination of use of the building civil engineering contractors, a reference point, the reference line 250HW-4 mixed-flow pump, determine the host group to install the centerline and installation elevation. Host Group impeller central mounting elevation should be consistent with the design drawings elevation 200HW-12 mixed-flow pump, which allows deviation ≤ ± 2mm, install centerline deviation is less than 5mm. Application for conveying medium, chemically neutral or aggressive media clean and pollution. Chemical processes forced circulation, mariculture, city gas works, water treatment systems. Performance parameters Flow (Q): up to 20 000 m3 / h Head (H): up to 30m Working Pressure (P): 1.0MPa working temperature (t): 0 ℃ ~ + 80 ℃ mixed-flow pump, 200HW-12 mixed-flow pump mixed flow pumps offer (quality businessmen) are provided by Shijiazhuang-Pump Co., Ltd. faction. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) is specialized in "slurry pumps, submersible pumps, sewage pumps, chemical pump, pulp pump, water pump, mud pump, multi-stage" of the enterprise, the company of " honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Xu.