タイトルまたは説明

Overview
1 according to E**1, manufacturing and inspection technology conditions and the provisions of the JB/T********2.
2, valve test according to JB/T********2 and JB******1 regulation, valve seal test monk seal test pressure according to the provisions of the JB/T********2.
3, the structure length according to the size of E**1 rules or provide.
4, welding groove or as stipulated in the power industry management standards *8 dg users with size.