HG/T 3195-2009
石墨四通
Graphite four-wye
2009-02-05
TB/T 820-1993
四通
1993-07-14
TB/T 821-1993
异径四通
1993-07-14
T/HEBTSXH 002-2024
封堵用三通（四通）
2024-05-14
HG/T 2136-2022
搪玻璃三通、四通
2022-09-30
TB/T 822-1993
三向四通
1993-07-14
CB 1115-1984
外螺纹三通 四通接头
1984-11-20
QJ 20053-2011
四通均流阀规范
Specification of 4 way flow divider
2011-07-19
HB 3227-1979
脚踏滑阀 （二位四通）
1980-01-07
CID A-A-50757
FOUR CHANNEL RECORDER
四通道记录器
1986-10-01
MIL MIL-PRF-32107/14 Notice 2-Validation
Hose, Air Duct Cross, Round
圆形四通风管软管
2014-07-29
DIN 3119
Four-way socket wrenches - Test torques series A
四通套筒扳手.试验扭矩系列A
2017-04-01
HB 4-26-2002
扩口式四通管接头
Cross, flared tube
CB/T 577-2007
铝合金燃油四通操纵阀
Aluminum alloy four-way fuel application valves
2007-05-22
GB/T 3746-2008
卡套式四通管接头
24° cone connectors - Union cross
2008-05-07
GB/T 5641-2008
扩口式四通管接头
Flared couplings - Union cross
2008-05-07
CB/T 576-2005
铝合金三通、四通外螺纹接头
Aluminum alloy three-way, four-way external thread joints
2005-12-12
HB 3226-1979
二位四通转阀（液压）
1980-01-07