A Norma americana | ASME B16,5 , ASME B16.47 , ANSI B16,5 , API605 , AWWA C207 |
Padrão japonês | JIS / KS 5k / 10K/16K/20K/30K |
A Norma alemã | 2527,2528,2561,2565,2566,2573,2576,2627-2638 , 2641,2642,2655,2656,2673,86029 DIN |
Norma britânica | BS4504 PN16 / 25 / 40 , BS10 e de mesa / MESA D |
Norma italiana | UNI 2253,2254,2276,2278,2281,6084-6093 |
Padrão da China | GB/T /T 13402-92,GB9112-9124-2000 , HG5010-5028 |