SEAMLESS STEEL PIPES FOR FLAMMABLE MEDIA - PIPES WITH REQUIREMENT CLASS A (PN-EN 10208-1 STANDARD)

Manufacturing and purpose
Manufactured seamlessly made from ingot or billet and subjected to hot rolled processing. They are designed for the transport of gas, oil, flammable liquids with a specific pressure. In general, class A pipes have lower requirements than those of requirement class B and are used in the distribution of gas to the public.

Steel grades used
L210GA, L235GA, L245GA, L290GA, L360GA

Dimensions
Outside diameter: 33.7mm to 660mm
Wall thickness up to 40 mm
Length: n / a m

Research and requirements
Straightness - 0.2% along the entire length, locally <3 mm / m
Tightness - pipes should be subjected to a water test (7Mpa) or electromagnetic testing.

SEAMLESS STEEL PIPES FOR FLAMMABLE MEDIA - PIPES WITH REQUIREMENT CLASS B (PN-EN 10208-2 STANDARD)

Manufacturing and purpose
Manufactured seamlessly made from ingot or billet and subjected to hot rolled processing. They are intended for the transport of gas, oil, flammable liquids with a specific pressure.
Pipes in this class have higher requirements than class A pipes in terms of the number of steel grades, chemical composition, mechanical requirements, etc., so they can be used for the transport of flammable substances.

Steel grades used
L245NB, L290NB, L360NB, L415NB, L360QB, L415QB, L450QB, L485QB, L555QB, L245MB, L290MB, L360MB, L415MB, L450MB, L485MB, L555MB

Dimensions
Outside diameter: 33.7mm to 660mm
Wall thickness up to 40 mm
Length: - 12 m

Research and requirements
Tightness - pipes should be subjected to a water test (7Mpa) or electromagnetic testing.
Straightness - 0.2% along the entire length, locally <4 mm / m (less than 4 mm per meter of pipe)