(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(welding seam): ensure the quality of entire boiler;
(4). Hydrostatic test: ensure the standard working pressure and safety;
(5). Third-party inspection report:By Henan Boiler Inspection Institute;
(6). Passed ISO:9001 and SGS certificate.