執(zhí)行標(biāo)準(zhǔn)
1. 設(shè)計(jì)與制造:GB/T 12237,API608,API 6D,BS5351,JPI 7S-48,DIN3357
2. 法蘭尺寸:JB/T 79,GB/T 9113,SH3406,ASMEB16.5
3. 結(jié)構(gòu)長(zhǎng)度:GB/T 12221,ASMEB16.10,JIS B2002
4. 檢驗(yàn)和實(shí)驗(yàn):GB/T 26480,API 598
固定球閥