5.2　Materials

5.2.1　The steel products shall have certification，moreover，their variety，specification and performance shall comply with the design requirements.

Sample size:100%.

Check method:Checking the certification，Chinese logo and test report；visual inspection of appearance quality.

5.2.2　The welding material shall have certification，the variety，specification and performance of the steel products shall meet the design requirements；the appearance of electrode shall not have painting falloff，core wire rust or other defects.

Sample size:100%；1% and at least 5 bags for visual inspection.

Check method:Checking the certification，Chinese logo and test report；visual inspection of appearance quality.

5.2.3　High strength bolt，ordinary bolt，anchor bolt and other standard fasteners as well as nut，washer and other standard fittings shall have certification，the variety，specification and performance of the steel products shall meet the design requirements.

Sample size:100%.

Check method:Checking the certification，Chinese logo and test report.

5.2.4　Anticorrosive paint，high temperature paint，diluent，curing agent and other materials shall have certification，the variety，specification and performance of steel products shall meet the design requirements.

Sample size:100%.

Check method:Checking the certification，Chinese logo and test report.