[国外标准] SAE AMS 6501D-2007 Steel, Maraging, Welding Wire 18Ni - 8.0Co - 4.9Mo - 0.40Ti - 0.10Al Vacuum Induc
[国外标准] BS 6501-2-1991 Flexible metallic hose assemblies. Specification for strip wound hoses and hose assem
[国外标准] JIS T 6501-2019
[机械行业标准] JB/T 6501-1992 回转式水井钻机