Gas,fuel,coal Heating Boiler System For Greenhouse 1.Strength calculation report with applied materials information; 2.100%NDT(non-destructive inspection) report of steel plate, tube and welding rod; 3.100% X-ray inspection report (welding seam): to ensure the quality of the entire boiler; 4.Hydraulic test report: ensure the standard working pressure and safety; 5.Third-party inspection report
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