DIN (mm)ANSI B16.5 BS1560 (mm) Mss sp-44API 605公差内环内径 垫片内径<=600<=24″>=26″ and <=34″±0.5>600 and <=800>24″ and <=34″>=36″ and <=60″±0.9>800 and <=1600>34″ and <=60″ ±1.3>1600>60″ ±1.6垫片外径<=600<=24″<=24″±0.9>600 and <=160000>24″ and <=60″>24″ and <=60″±1.81600>60″ ±2.2外环外径 >=1/2″ and <=60″±0.9<=600<=24″ 0-1.0>600 and <=1000>24″ and <=34″ 0-1.8>1000 and <=1600>34″ and <=60″ 0-2.2