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              Welcome To Qingdao Baoduo Steel Structure Co., Ltd.


              Quality control procedure

              Raw material Mill certificate re-check and approval, including:

              · Steel materials

              · Welding rods and welding wires

              · Bolts

              · Painting

              Steel materials Tensile test and dimension measurement approval

              When the steel materials arrive factory, we apply dimension measurement and tensile test by our in-house QC persons.

              Micrometer

              Micrometer

              Universal detector

              Universal detector

              WPS approval before fabrication

              quality-3
              quality-4

              Quality control progress during fabrication

              Verticality check

              Verticality check

              Spot weld dimension check

              Spot weld dimension check

              Butt weld width check

              Butt weld width check

              Fillet weld foot height check

              Fillet weld foot height check

              Fillet weld effective throat check

              Fillet weld effective throat check

              Weld quality inspection

              We perform non-destructive testing (NDT) in accordance with contract documents and applicable welding codes. As part of this process, we ensure that all inspections, test plans and quality manuals are fully documented and maintained.

              quality-10
              quality-11

              Quality control progress during fabrication

              quality-12
              quality-13
              quality-14

              Pre-assembly is applied to special shape structure or as per client’s requirement.

              quality-15
              quality-16
              quality-17

              Anti-corrosion system quality control

              Apply ball blasting on primary steel structure components to make sure the surface reach to Sa 2.5 grade.

              Apply ball blasting on primary steel structure components to make sure the surface reach to Sa 2.5 grade.

              Pre-coating as required

              Pre-coating as required

              Painting dry film thickness check

              Painting dry film thickness check

              亚洲野外乱理伦片_日本按摩高潮s级中文片