| 
 设计制造标准 
 | 
 法兰尺寸标准 
 | 
 结构长度标准 
 | 
 检验试验标准 
 | 
| 
 GB/T12237-89 
 | 
 JB/T79-94 HG20592 
 | 
 GB12221-89 
 | 
 GB/T13927-89 JB/T9092-99 
 | 
| 
 API6D 
 | 
 ANSI B16.5 
 | 
 ANSI B16.10 
 | 
 JB/T9092-99 
 | 
| 
 JPI7S-48 
 | 
 JIS B2212~2214 
 | 
 JIS B2002 
 | 
 API598 
 | 
This region has not yet joined our new website. You will now continue to the existing site for 球友会·官方版网站登录入口-球友会(中国)