DIN/EN black phopshated precision seamless steel tubes

  • Black phosphated on both sides of pipe.
  • The phosphated coating is Delicate, high lubricity, uniform color.
  • Good looking in appearance
  • High anti corrosion & anti rust.
  • Suitable for painting, and have strong adhesion

Technical characteristics

  • img img

    DIN2391/C ( EN10305-1 ),EN10305-4 ( DIN2445 ), SAE J524

  • img img

    E235 ( ST35、ST37.4 ),E255 ( ST45 ), E355 ( ST52 )

  • img img
    Heat treatment :

    NBK (+N) normalized

  • img img
    Surface treatment:

    Bright as cold drawn

  • img img

    10μm / meter

Delivery conditions

goods: NBK (+N)

Packaging:Two ends sealed with plastic caps, bundling with plastic film and woven bag package. Each bundle max 1000kgs

Length: Fixed 6m or as customer’s requirement


They are applied in engineering machinery ,ships ,precision machinery ,hydraulic and pneumatic system .The surface of phosphating precision steel tube  is especially suitable for painting or spray treatment. The paint surface has strong adhesion, the effect is excellent and beautiful, and the rust prevention effect is greatly enhanced.



1. What is a hydraulic pipe assembly?

Hydraulic components are made up of works of art and valves that are manufactured by them.

It also has accessories in its fittings and fittings. In this type of pipe fittings, the sub are connected by welding or pressing and their hydraulic pipe assemblies are used in many industries;

Commonly used in the automotive industry for hydraulic and other types of pipelines.

2. What is the purpose of the hydraulic pipe assembly?

Hydraulic components have many uses, but hydraulic systems need these systems for safe braking, but heavy duty braking systems to control the vehicle.

This means that they must be made of high-quality materials, such as stainless steel or aluminum, so that they do not get trapped in this high-pressure fluid.

Exposure to drinking water or substances on the road during use, and over time, other foods or foods found on it.

3. Do you offer payment plans?

Yes, we offer payment plans in various length options. View details of our payment plans.

4. How should I buy steel from you? How to choose the right one for me?

Yes, we offer payment plans in various length options. View details of our payment plans.

5. Can I get a sample?

Yes, please pay and freight before your samples. But you need to pay for samples and shipping by yourself.

6. How do you ship the goods by sea?

We usually ship to our factory by sea or air express (DHL UPS FedEx). Please let us know if our other way we ship to the factory. event. We also offer delivery service if required.

7. What are the payment terms?

For accepting large wire payments (by payment method), Western Union and we accept Alipay payments, but not for accepting small wire payments, only for secure wire payment purposes.

8. Who should I contact if I have any other questions?

If you have any questions, please contact us: global steeltube




For Heavy Truck

SAE J524 precision seamless steel tubes are widely used ... Read more

For Construction Machinery

DIN 2391 precision hydraulic steel pipes are widely use ... Read more

For Agricultural Machinery

EN-10305 precision seamless steel tubes are widely used ... Read more