Steel surface quality: the steel surface shall be allowed to have cracks, scars and folds. Steel surface bumps are allowed, but must not exceed the height of 9.5mm steel cross ribs, other defects on the steel surface depth and height shall not exceed the size of the site where the allowable deviation. Rebar component test: Ingredients: Indicator assessment rebar ingredients are: different C, Mn, P, S, Si 9.5mm rebar purchase other items, brands, content is mixed wholesale 9.5mm steel, which is generally range: C (0.10 ~ 0.40%), Mn <1.80%, P <0.050%, S <0.050%, Si (0.60 ~ 1.00%). Substitution of steel: steel material should strengthen planning and timely supply of 9.5mm steel manufacturer, to avoid the construction process of the steel substitution. When the terms of another, or the diameter of the steel rebar instead of steel specified in the design documents, should comply with the regulations. Reinforcement spacing regulations, anchorage length, the minimum structural requirements such as bar diameter. At a high level, low level of reinforced steel substitution, should adopt the method to change the diameter of the steel should not be used to change the number of ways to reduce the cross-sectional area of ??reinforcement. 9.5mm steel stock, Ding Ding cold rolled, 9.5mm steel provided by Ding Ding Industrial Co., Ltd., Henan Province. Ding Ding Industrial Co., Ltd., Henan Province (www.hnddsy.com) is Anyang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In cold-Ding Ding leadership with the staff warmly welcome all inquiries negotiations to create a better future for cold-Ding Ding.