DIN2391 Precision SeamlessTube For Hydraulic

DIN2391 Precision SeamlessTube For Hydraulic

Min Order Quantity:1TON

Port:Tianjin Port ,China

Sample :for free

Trade Terms: FOB / CIF / CFR

Payment: L/C,D/A,D/P,T/T,Western Union,Money Gram payments for offline orders.

Mobile/whatsapp: +86-15076763716

Email: july@zssteeltube.com



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You can make an inquiry about this product.

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  • On-time shipment and pre-shipment product quality safeguards.
  • Payment refund up to 100% of the Trade Assurance Order Amount.
  • Trade Assurance coverage.

DIN2391 Precision SeamlessTube For Hydraulic is widely used in automobiles, motorcycles, electric cars, petrochemical, electric power, ships, aerospace, bearing, pneumatic components, such as low pressure boiler seamless steel tubes in the category, also can be applied to steel sleeve, bearings, hydraulic, mechanical processing and other fields.


Mateial:10、20、35、45 、40cr、42CrMo

Precision steel tube formula: (outer diameter  – wall thickness) * wall thickness *  0.02466 kg/m =(weight of per meter)


Annealed or hard condition depending on the size and application.

Surface finish

Highly polished or bright annealed surface. A pickled surface can be delivered on request.

Surface roughness ≤ 0.4 μm on both the outside and inside surfaces is guaranteed.


Tubes can be cut to length or delivered in straight lengths up to 9 meters maximum.


We can provide the following types of testing for thin wall precision tubes:

  • Corrosion test
  • Flaring test
  • Flattening test
  • Hardness test
  • Mechanical and chemical tests
  • Microstructure test
  • Eddy Current and ultrasonic tests (on request)

Standard &Material

DIN2391 Precision SeamlessTube For Hydraulic


Mateial:10、20、35、45 、40cr、42CrMo

Grade chemical component%
C Si Mn S P Cr
10 0.07-0.13 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035
20 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035
35 0.32-0.39 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035
45 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035
40Cr 0.37-0.44 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035 0.08-1.10
25Mn 0.22-0.29 0.17-0.37 0.70-1.00 ≤0.035 ≤0.035 ≤0.25
37Mn5 0.30-0.39 0.15-0.30 1.20-1.50 ≤0.015 ≤0.020

company introduce

Cangzhou Zhongshun Steel Pipe Trade Co.,Ltd is a large-scale materials circulation enterprises. To achieve one-step service,we are working together to achieve the strategic partner with a number of companies. The mainly product: welded steel pipe,spiral steel pipe,seamless steel pipe,square steel pipe ,galvanized steel pipe,elbow,flange and so on.
Our company keeps the principle of integrity-based,customer first.Thank new and old customers by the best quality, lowest price,the most perfect after-sales service!

1.About us

We located in CangZhou,where be known for steel pipes.

We are working in steel pipes and export trade for more than 9years.

We have donzens of production lines.

2.Main business

We focus on kinds of steel pipe, such as welded steel pipe, galvanized steel

pipe, square&rectangular steel pipe, seamless steel pipe, elbow ,tee  flange,etc.

3.Supply ability 

About 20000 tons/per month.

Large capacity of stock could ensure our short lead time.


Our products have been manufactured according to API, ASTM, EN, BS, ISO, DIN and JIS internationally advanced standards.



Pls contact me

Name: July

CangZhou ZhongShun Steel Pipe Trade  CO., LTD

mobile/whatsapp: +86-15076763716

Email: july@zssteeltube.com


Global Business

1. More than 10 years of sales experience

2. Product exported more than 150 countries

3. Arrange to produce according yo customer's request

Fast Delivery

1. AA level customs broker,Faster through

2. 20 years of experience in the freight forwarding company

3. Delivery Detail: 10-20 days

Trusted Quality

1. Certificate: API, CE, ISO9001.2000.MTC etc

2. Inspection: BV,SGS,others is avaliable.

3. A complete testing system and testing equipments

One-Step Service

1. Free sample can be provided

2. Small order is acceptable

3. OEM is acceptable

4. Any third party testing is acceptable




  • Phone0086-317-2159105


  • Phone0086-317-2159106