宁波博戈阀门科技有限公司
会员
会员
1.设计、制造按GB/T12238-1989
1, design and manufacture according to GB/T12238-1989
2.结构长度按GB/T12221-2005
2 the length of the structure by GB/T12221-2005
3.对焊接端按SAME B16.25 GB/T12224
3 according to the SAME B16.25 GB/T12224 on the welding ends
4.阀门检查和实验JB/T9092-1999
The 4 valve inspection and test JB/T9092-1999
