E235 ERW Cold Drawn Precision Seamless Steel Tube Thin Wall is a high-quality, durable, and reliable seamless steel pipe manufactured using advanced ERW (Electric Resistance Welding) technology. It features precise dimensions, excellent surface finish, and consistent wall thickness, making it ideal for various industrial applications requiring high strength and precision.

• Marking: Size, standard, heat number as customer required
• Surface: Oiled or Black painted to prevent rust
• Inner Packing: Caps at both ends, steel strong trips on every bundle
• Outer Packing: PE strip wrapping outside
• We also can do as customers' requirements

• We can provide the free sample for your inspection and check
• We can provide personal customized service, such as adding your company's logo on the products, specified colors, etc.
• If you come to China, we would like to show you around the factory
• If you have any questions, please contact us without hesitation

The tubes can be produced in the following delivery conditions:

• BK (+C) Cold finished/hard (cold finished as drawn) - No heat treatment after the last cold forming process
• BKW (+LC) Cold finished/soft (lightly cold worked) - After the last heat treatment there is a light finishing pass (cold drawing)
• BKS (+SR) Cold finished/stress relieve annealed - After the final cold forming process the tubes are stress relieve annealed
• GBK (+A) Annealed - After the final cold forming process the tubes are annealed in a controlled atmosphere
• NBK (+N) Normalized (Mainly focus on) - After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere

• Incoming Raw Material Inspection
• Raw Material Segregation to avoid steel grade mix-up
• Heating and Hammering End for Cold Drawing
• Cold Drawing and Cold Rolling, on line inspection
• Heat Treatment: +A, +SRA, +LC, +N, Q+T
• Straightening-Cutting to specified length-Finished Measuring Inspection
• Mechanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Microstructure etc
• Packing and Stocking

100% of our steel tubes are dimensionally checked, visually checked to assure perfect surface condition with no defects, and undergo eddy current test and ultrasonic test to eliminate longitudinal and transversal defects.