GB/T 12771-2019
流体输送用不锈钢焊接钢管
GB/T 24593-2018
锅炉和热交换器用奥氏体不锈钢焊接钢管
JB/T 978-2013
焊接连接铰接管接头
2013-12-31
GB/T 3750-2008
卡套式铰接管接头
24° cone connectors - Angle swivel screw connector
2008-05-07
JB 2099-1977
焊接式管接头接管
1977-05-01
GB/T 3747-2008
卡套式焊接管接头
24° cone connectors - Weld male
2008-05-07
GB/T 5642-2008
扩口式焊接管接头
Flared couplings - Weld male
2008-05-07
GB/T 3757-2008
卡套式过板焊接管接头
24° cone connectors - Weld-in bulkhead straight connector
2008-05-07
GB/T 3758-2008
卡套式管接头用锥密封焊接接管
24° cone connectors - Weld-on nipple
2008-05-07