Welded reducers
- OST 36-22-81 Welded carbon steel pipeline parts Dnominal 500 - 1400 mm, Рnominal ≤ 2.5 MPa (≈ 25 kgf/cm2). Concentric and eccentric reducers;
- OST 34.10.753-87 Parts and assembly units of thermal power plant pipelines with Poper. < 2.2 MPa (22 kgf/cm2), t ≤ 425 °С. Reducers made from welded steel sheets;
- OST 34.10.424-90 Parts and assembly units of nuclear power plant pipelines with Poper. < 2.2 MPa (22 kgf/cm2), t ≤ 300 °С. Reducers made from welded steel sheets;
- OST 34.42-665-84 Parts and assembly units of nuclear power plant pipelines with Poper. < 2.2 MPa (22 kgf/cm2), t ≤ 350 °С. Reducers made from welded steel sheets;
- TU 102-488-95 Connecting pieces and units of transit pipelines with Poper. of up to 10 MPa (100 kgf/cm2). Stamped concentric reducers;
- TS 585.000 SB series 5.903-13 issue 1 Concentric and eccentric welded reducers made from steel sheets, intended for application in pipelines regulated by RD 03-94;
- • OST 36-44-81 Carbon steel pipeline parts, welded and bent, Dnominal up to 500 mm, Pnominal up to 10 MPa (100 kgf/cm2). Welded reducers.
Machined reducers
- GOST 22826-83 Assembly units and parts of pipelines. Reducers for Pnominal from over 10 to 100 MPa (from over 100 to 1000 kgf/cm2);
- OST 34-42-423-90 Parts and assembly units for nuclear power plant pipelines for Poper. < 2.2 MPa (22 kgf/cm2), Т<=300 °C. Machined reducers;
- OST 24.125.08-89 Austenitic steel parts and assembly units for nuclear power plant pipelines with Dh=14÷325 mm. Machined reducers for nuclear power plant pipelines;
- STO TsKTI 318.01-2009 Machined reducers for steam and hot water pipelines of thermal power plants.
Seamless stamped reducers
- GOST 17378-2001 Seamless welded pipeline parts made from carbon and low allow steel. Reducers.
- OST 24.125.09-89 Stamped reducers for nuclear power plant pipelines;
- OST 34.10.422-90 Parts and assembly units of nuclear power plant pipelines with Poper. < 2.2 MPa (22 kgf/cm2), t ≤ 300 °С. Seamless reducers;
- OST 34.10.700-97 Seamless welded steel parts for nuclear and thermal power plant pipelines, Рoper. < 2.2 MPa (22 kgf/cm2). Reducers;
- OST 34.10.701-97 Seamless welded steel parts for nuclear and thermal power plant pipelines, Рoper. < 2.2 MPa (22 kgf/cm2);
- OST 34.42-700-85 Seamless welded steel parts for nuclear and thermal power plant pipelines, Рoper. < 2.2 MPa (22 kgf/cm2). Reducers;
- STO TsKTI 318.03-2009 Stamped reducers for steam pipelines of thermal power plants.
Reducers for oil and gas industry and petrochemical industry:
Stamped:
- TU 1469-010-04834179-2011 for transit and process oil pipelines and oil product pipelines of PJSC "Transneft".
Concentric stamped, welded and forged welded:
- TU 1469-032-04834179-2012 (steel 13KhFA, 09GSF, 20FA, 08KhFChA, steel 20, 09G2S, etc.) for construction of oil and gas field surface facilities;
- TU 14-1-5598-2011 for construction of oil field surface facilities.
Flared forged welded, stamped and welded:
- TU 1469-019-04834179-2014 for transportation of gaseous (natural gas) or liquid (crude oil and oil products) hydrocarbons which have no corrosion effects on the pipe metal, at PJSC "Gazprom" facilities;
- GazTU 102-488/1-05, TU 1469-030-04834179-2010, TU 102-488-05, TU 1469-022-04834179-2011 for transit oil and gas pipelines.
Pressed and forged welded:
- TU 1469-012-04834179-2008 for transit and field gas pipelines of PJSC "Gazprom".
Concentric stamped from alloy steel:
- TU 1468-027-04834179-2015 for process pipelines of chemical, petrochemical, oil refining and other industrial facilities.