What is the sign of steel rebar
At present, China's iron and steel products implementation standards are national standards (GB, GB / T), industry standards (YB), local standards and enterprise standards
Standards are the uniform rules for repeating things and concepts. It is based on the comprehensive achievements of science, technology and practical experience, and is approved by the competent authority and issued in a specific form by consensus by the parties concerned, as a criterion and basis for common compliance.
