国内阀门材料常用技术标准 低合金钢焊条射线探伤要求
| 焊 条 型 号 | 射 线 探 伤 要 求 | 
| EXX15-X EXX16-X EXX18-X E5020-X | Ⅰ级 | 
| EXX00-X EXX03-X EXX10-X EXX11-X EXX13-X E5027-X | Ⅱ级 | 
This region has not yet joined our new website. You will now continue to the existing site for 开云手机站官方站线登录入口-开云(中国)