Customizable Heavy Industrial Machinery DIN 2391 Precision Steel Tube

Brand Name:FRANK STEEL
Certification:DNV / LR / BV/ SGS
Model Number:DIN2391
Minimum Order Quantity:1 Tons or negotiation
Delivery Time:about 30 work days
Payment Terms:T/T, L/C
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Location: Suzhou Jiangsu China
Address: 227-11666 DONGTAIHU STREET, SONGLING TOWN, SUZHOU CITY, JIANGSU PROVINCE, P.R.CHINA
Supplier`s last login times: within 48 hours
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Product Details

DIN2391 precision seamless steel pipe, commonly used in heavy industrial machinery design


1. Description

DIN2391 series precision seamless steel pipe is cold drawn high precision seamless steel pipe. The steel pipe wall thickness and outer diameter are strictly produced in accordance with the standard. The mechanical and technological properties of the steel pipes in DIN2391 standard are excellent. The steel pipes can withstand high pressure and impact, and are especially suitable for hydraulic machinery and auto parts industry. The steel pipe can be cold bent at any angle, flared and flattened without cracks, which is suitable for industries that need all kinds of bending deformation processing.


Size: 6mm-168mm.
W.T.: 0.8mm-12mm.
Shape: Round.

Production type: Cold drawn or cold rolled.

Length: Single random length/ Double random length or as customer’s actual request max length is 10m.

Grade: St30 Si, St30 Al, St35, St45, St52.


2. Surface Quality

There are generally three delivery states.

A. NBK state (no oxidation bright heat treatment) Features--- high precision, good finish, no oxide layer.

B. Black phosphating state Features--- bright in black, good color, strong rust resistance.

C. Galvanizing State Features--- meet special requirements


3. Chemical Composition

Steel nameC maxSi maxMnP maxS max
St 30 Si0.10.3≤0.550.0250.025
St 30 Al0.10.05≤0.550.0250.025
St 350.170.35≥0.400.0250.025
St 450.210.35≥0.400.0250.025
St 520.220.55≤1.600.0250.025

4. Mechanical Properties

Steel Grade Minimum values for the delivery condition           
Steel NameSteel NumberBK BKW BKS  GBK NBK  
  RmA %RmA %RmReHA %RmA %RmReHA %
  Mpa Mpa MpaMpa Mpa MpaMpa 
St 30 Si1.02114308380123802801628030290 to 42021530
St 30 Al1.02124308380123802801628030290 to 42021530
St 351.03084806420104203151431525340 to 47023525
St 451.0408580552085203751239021440 to 57025521
St 521.058640458075804201049022490 to 63035522

5. Details picture


About us

We can produce seamless steel pipe according to the size range we provide, so when the customer inquires, you can give us the size and length you need. After receiving the inquiry, we will give you an offer immediately. The minimum customized size of each specification is 2 tons. We are not retailers, we are manufacturers.

China Customizable Heavy Industrial Machinery DIN 2391 Precision Steel Tube supplier

Customizable Heavy Industrial Machinery DIN 2391 Precision Steel Tube

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