A416/A416M – 17a Standard Specification for Low-Relaxation, Seven-Wire Steel Strand for PrestressedConcrete
Designation: A416/A416M - 17a Standard Specification for Low-Relaxation, Seven-W...
国外标准2023.09.08
Designation: A416/A416M - 17a Standard Specification for Low-Relaxation, Seven-W...
国外标准2023.09.08