6. Material 6.1 Material is to be filled by the purchaser on the pump datasheet. If the seller believes that other materials more appropriate, can submit a written report, but the adoption of the buyer's confirmation. 6.2 Unless otherwise specified, carbon steel, low alloy steel corrosion margin taken 3mm, high alloy steel 0mm. 6.3 Non-use of asbestos-containing fibers is prohibited. 6.4 Transporting organic solvents, non-use of rubber materials. 6.5 Conveying parts that are flammable, explosive or poisonous can not use cast iron. 6.6 In addition to austenitic stainless steel, the seller shall make V-type impact tests on base metals and welded joints when the medium or ambient temperature is ≤-20 ° C. 7. Workshop Tests 7.1 Workshop Tests See Pump Data Sheet. 7.2 hydrostatic test pressure should be 1.5 times the maximum allowable working pressure, but not less than 0.14MPaG. Stability accuracy test is a must, the precision should be within ± 1%, and the repeatability accuracy test and linearity test are optional, the precision should be within ± 3%. 7.3 For the inspection or pilot project requiring buyer's presence, the seller shall notify the buyer at least 20 days after the test date is confirmed so that the buyer can participate in the project in time. 7.4 The result of the non-seeing test shall be recorded and sent to the buyer for approval. 8. Painting, marking, packaging 8.1 Painting 8.1.1 Before painting all dust, rust, oil and other attachments should be removed. 8.1.2 Equipment Topcoat should be buyer's request. 8.2 Marking 8.2.1 The pump nameplate shall be made of 18-8 stainless steel and securely fixed to the conspicuous part of the pump. 8.2.2 nameplate content should include: a. Tag; b. Equipment name / device name; c. Seller (manufacturer) name and trademark; d. Pump model and name; e. Pump main parameters, including the rated flow (l / h), maximum allowable outlet pressure (MPaG), relief valve set pressure MPaG, shaft power (kW) and pump weight (kg), etc .; f. Pump's serial number and date. 8.3 Pump inlet and outlet should be set metal sealing plate, with a rubber pad and at least four bolts. 8.4 The pump and its auxiliary piping (including the driver and auxiliary equipment) shall be packed in a manner that will ensure that the product is not damaged, lost during transportation and should be suitable for outdoor use and should be kept open for no less than six months.