: The standard was developed to unify the technical requirements for high-yield strength steels, specifically those with yield strengths ranging from 420 MPa to 960 MPa . The current version, GB/T 16270-2009
GB/T 16270 standard is a Chinese national technical specification for high-strength structural steel plates delivered in a quenched and tempered condition. It is primarily used in heavy industry to ensure materials can withstand extreme mechanical stress and low temperatures. Chinese Standard GB/T Core Story of the Standard Purpose & Development
The represents China’s national recommended standard for high-strength structural steel plates in the quenched and tempered condition . Formulated by the China Iron and Steel Association , this specification establishes parameters for chemical composition, dimensions, and testing for materials up to 150mm thick.
Before paying for the PDF, check if the online portal allows free reading. If you only need the grade tables (Q690, Q960, etc.), a quick search for "GB/T 16270 mechanical properties table" often yields a safe summary from reputable steel mill websites. gb t 16270 pdf
Due to its high strength and weldability, GB/T 16270 steel is used in heavy-duty welded structures, including: Mining Machinery : Excavators, dump trucks, and hydraulic supports. Construction Equipment : Mobile cranes, drilling machines, and bulldozers. Infrastructure
Used in the fabrication of dump truck bodies, power shovels, rock crushers, and longwall mining shields.
. It covers plates used in heavy machinery, mining equipment (e.g., excavators, loaders, bulldozers), and structural parts of cranes. Delivery Condition : Steel must be supplied in a quenched and tempered condition (often referred to as slack quenching). Steel Grades : Common grades include Q460, Q500, Q550, Q620, Q690, Q800, Q890, and Q960 Quality Designations : The standard was developed to unify the
: Includes standard grades like Q460, Q500, Q550, Q620, and Q690 , as well as ultra-high-strength grades such as Q800, Q890, and Q960 .
The defining characteristic of GB/T 16270 is the process.
While summaries and third-party tables are available online, having an authentic is essential for several reasons: Chinese Standard GB/T Core Story of the Standard
Standards like GB/T 16270 are crucial for ensuring quality, safety, and compatibility across various industries. They provide detailed specifications to manufacturers, suppliers, and buyers to facilitate international trade and protect consumers.
💡 Always verify that your PDF is the most recent version, as standards are periodically updated to reflect new manufacturing technologies and safety requirements.
Chinese standards often allow slightly wider tolerances on thickness dimensions but have stricter rules for low-temperature impact testing.
GB/T 16270 is the Chinese national standard governing high-strength structural steel plates in the quenched and tempered condition. This standard is critical for engineers and procurement specialists working in heavy machinery, bridge construction, and high-rise building projects. Understanding GB/T 16270
If you are sourcing this material for a project, let me know: Which (e.g., Q690D, Q460E) you need? The required plate thickness for your design? Whether you need to find a direct Western equivalent ?
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