The GOST 17378 Seamless Eccentric Reducer (Perekhody Ekspentricheskiye) is a specialized Russian-standard fitting designed for horizontal piping. Unlike concentric versions, its "flat-on-one-side" geometry prevents the accumulation of liquid or gas pockets, making it essential for pump suctions. Manufactured from Steel 20 or 09G2S, these seamless reducers offer high pressure integrity and are precision-sized to integrate perfectly with GOST-standard seamless pipelines.
Technical Attributes: GOST 17378 Eccentric Reducer
Standard,GOST 17378 (Seamless Steel Butt-Welding Reducers)
Fitting Type,Eccentric (Offset Centerlines)
Manufacturing,Seamless (Hot Pressed or Mandrel Forming)
Material Grades,"Steel 20, 09G2S, 10G2, 12Kh1MF"
Size Range (DN),DN20 × DN15 to DN1000 × DN800
Size Range (OD),26.9 mm to 1016 mm
Wall Thickness,Matches GOST 8732 / 8734 Pipe Wall
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per GOST 16037
Working Pressure,Up to 16 MPa (160 bar)
Operating Temp,−70∘C to +450∘C (Grade dependent)
Tensile Strength,410–540 MPa (Grade 20)
Yield Strength,≥245 MPa (Grade 20)
Testing Standard,"Hydrostatic, UT, Visual-Measuring"
Surface Finish,Natural / Anti-corrosion Oil / Black Varnish
Certification,GOST-R / TR CU 032 (Pressure Equipment)
Dimensional Specs,Performance Type 1 and Type 2
Traceability,"Material Grade, Size, and Heat Number Stamped"
Primary Use,Horizontal Pump Suction / Pipeline Drainage
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
