GS-Hydro offers a wide range of piping products for a complete non-welded piping system.

Tubes & Pipes

GS-Hydro maintains a large stock of carbon and stainless steel pipes and tubes to be utilized in hydraulic and other piping systems.


OD x s

Stainless steel
ASTM 269 TP316L / DIN 2391
AST A312 / A530 Grade TP316L

6 x 1.0 - 80 x 10
1/2" x SCH10 - 24" x SCH160
21.34 x 2.11 - 609 x 59.51

Carbon steel
EN 10305-4 E235+N (ST37.4)
EN 10305-4 E355+N (ST52.4)

4 x 1.0 - 273 x 6.0
6 x 1.0 - 250 x 25

Note! Larger sizes and other materials such as duplex, super duplex, tungum, etc., are supplied upon special order.

Other specifications

GS-Hydro recommends the use of cold drawn pipes and tubes due to both quality (precision in dimension and shape) and for cleanliness reasons (no scale). As a comparison, hot rolled tubes will always have some scale both inside and out due to the manufacturing process; by cold forming there will not be any scale inside the tube after the manufacturing.

All precision steel pipes are supplied with trace numbers. Original GS-Hydro high pressure piping can be recognized from the marking “GS-Piping”.

In order to ensure quality and traceability GS-Hydro can deliver the pipes and tubes with either EN-10204.3.1 or EN-10204.3.2 certificates (in accordance with EU standard EN 10204 – DIN 50049). We ask that the required certificate, if one is needed, would be specified by the customer.

The required wall thickness and / or maximum allowable working pressure is calculated according to the following codes:

  • DIN
  • ANSI
  • Det Norske Veritas (DNV)