OST 1 13855-81 Straight tees with compression nuts
Tees according to OST 1 13855-81 – the design feature lies in the compression nut (made of steel 30KhGSA) and the manufacture of steel grade 30KhGSA.
Description of product design features
Reducing tees should be made in three versions:
- performance 1 – hell. 1
- performance 2 – hell. 2
- performance 3 – hell. 3
- tee through passage – steel grade 30HGSA;
- compression nut – steel grade 30HGSA.
Maximum operating and ambient temperature for a straight tee – 250 oS.
- Threaded tees – cadmium (Kd9.phos.ox.);
- compression nut – cadmium (Kd6.phos.ox.gfzh) is carried out in our own electroplating shop.
Tee with compression nut 1-10-OST 1 13855-81
Instead of the normal 5710А-5712А
Compression nut union tees are used in many industries. An increased demand for products, in particular, is observed in the aircraft industry, where such tees are used for reliable connection of pipelines along the outer cone in liquid and gas systems of aircraft (helicopters).