: Specifically covers high-strength structural steel plates delivered in quenched and tempered (Q+T) conditions. Thickness Limits : Applicable to plates with a thickness not exceeding (extended from 100mm in the previous version). Reference Standards
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. gb t 16270 pdf
is generally equivalent to EN 10025-6 S690QL . : Ultrasonic testing (per GB/T 2970) may be
: These steels are primarily used in heavy engineering, such as bridge construction, highway engineering, and structural parts for powered supports. F) indicating impact test temperatures
: Ultrasonic testing (per GB/T 2970) may be required by contract for internal flaw detection. International Equivalents
: Grades are often followed by letters (C, D, E, F) indicating impact test temperatures, such as , which requires impact testing at negative 40 raised to the composed with power C Mechanical Properties
Example: denotes a steel with a minimum yield strength of 690 MPa, tested for impact resistance at -20°C.