DIN 2609 grade STE 290-7 pipes

Dec 16, 2025

DIN 2609 Grade STE 290-7 pipes are manufactured from mild carbon steel and are designed for service conditions involving elevated temperatures and high internal pressure. This grade provides stable mechanical performance and reliable load-bearing capacity, making it suitable for a wide range of industrial piping systems.

DIN 2609 Grade STE 290-7 clad pipes are specifically used to protect underlying pipes from corrosion by combining the strength of carbon steel with an additional corrosion-resistant layer. This design extends service life and reduces maintenance requirements in aggressive operating environments.

The DIN 2609 Grade STE 290-7 Schedule 40 pipe is classified as a medium-wall pipe, offering a balanced combination of strength, durability, and cost efficiency. Due to its ability to withstand high temperature and pressure, it is widely applied in industries such as oil and gas, petroleum refining, petrochemical processing, as well as boiler, heater, and other thermal equipment systems.

DIN2609 Grade STE 290-7 Pipe Wall Thickness Chart

Outer diameter and wall Thickness
Execution	Size Range	OD Tolerance	Wall tolerance
Hot-rolled Tube	OD – 80 mmOD > 80 mmWall < 12 mmWall - 12 mm	± 0.4 mm± 0.5 % of OD	± 0.7 mm± (5 % x wallthickness + 0.1 mm
Hot-rolled peeled tube	All sizesWall < 12 mmWall - 12 mm	+ 0.25/- 0 mm	± 0.8 mm± (5 % x wall thickness+ 0.2 mm)
Cold Worked tubecold-rolled or cold-drawn	OD < 40 mmOD 40 - 80 mmOD > 80 Wall Thickness< 6 mm Wall Thickness6 - 8 mm Wall Thickness > 8	+ 0.30/- 0 mm+ 0.35/- 0 mm+ 0.40/- 0 mm*	± 0.30 mm± 0.35 mm± 0.40 mm

DIN 2609 Grade STE 290-7 Pipe Equivalent Grades

Equivalent Designation
DIN	EN	BS	NFA	ASTM	ASME
DIN 2609 Grade STE 290-7	–	–	–	–	–

STE 290-7 Steel Pipe Chemical Properties

Chemical Properties
Carbon	Silicon	Manganese	Phosphorous	Sulphur	Molybdenum	Nickel	Chromium	Copper	Others
max 0.16	max 0.40	0.60 – 1.40	0.03	0.025	max 0.08	min 0.30	max 0.30	–	Al min 0.020