The principle of tee is simple, but its quality and material are very important because it is directly welded in the pipeline.

The sealing of the lock ring in the three-way shell is the key, because attention should be paid to the clockwise rocking of the locking screw to exit the clamp ring, counterclockwise rocking of the locking screw to fasten the clamp ring, attention should be paid to recording the number of loops of each lock ring, it should be the responsibility of a special person; in addition, the sealing of the steel ball in the plugging should be cleaned before use and checked whether the top rod of the gun jacks against the steel ball and whether the spring can restore its original state to ensure confidentiality. Seal.

The plugging tee is mainly composed of flange, blind plate, nozzle, upper and lower guard plates of corresponding specifications, plugging and clasp devices, etc. It can be plugged according to the corresponding specifications of pipeline operation pressure, medium and pipeline external design. When pipelines are plugged, the equipment is used to connect pipelines with splint valves; after construction, it is used to plug holes in pipelines; the equipment is widely used in oil pipelines, natural gas pipeline renovation and pipeline repair.

1) Q/BDS02-2012 to block the tee;

2) GB150.1-150.4-2011 pressure vessels;

3) Carbon steel and alloy steel forgings for NB/T 47008-2010 pressure equipment;

4) GB713-2008 steel plate for pressure vessel;

5) ASME B31.8 gas transmission and distribution pipeline system.