[国外标准] SAE AS 7245A-2007 Inserts, Screw Thread, Helical Coil 19Cr-9.2Ni, Corrosion Resistant Steel,Procurem
[国家标准] GB 7245-1987 鞍形弹簧垫圈
[机械行业标准] JB/T 7245-1994 制冷装置用截止阀