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DIN2391 Precision Seamless Steel Tube

Basic Properties
Place of Origin: China
Brand Name: Pipeway
Certification: ISO 9001 , TS16949
Model Number: DIN2391 Precision Seamless Steel Tube
Trading Properties
Minimum Order Quantity: 1 tons
Payment Terms: T/T
Supply Ability: 3000 tons per month
Product Summary
‌DIN 2391 Precision Seamless Steel Tube St35, ST45, ST52, NBK / GBK / CW / SR 1. ‌Basic Specifications‌ ‌Standard‌: DIN 2391 (German Industrial Standard for cold-drawn precision seamless steel tubes)‌1. ‌Material‌: Carbon steel (e.g., ST52 grade)‌8, suitable for mechanical and hydraulic applications...

Product Details

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Precision Seamless Steel Tube

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DIN2391 Seamless Steel Tube

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DIN2391 Precision Seamless Steel Tube

Ends: Plain
Package: Standard Export Package
Standard: ASTM, DIN, JIS, GB, EN
Surface Treatment: Bright And Clean
Material: Steel
Tolerance: ±0.05mm
Length: 5.8M, 11.8M, Random Length
Application: Precision Purpose
Product Description

 

DIN 2391 Precision Seamless Steel Tube 

St35, ST45, ST52, NBK / GBK / CW / SR

1. Basic Specifications

  • Standard: DIN 2391 (German Industrial Standard for cold-drawn precision seamless steel tubes)‌1.
  • Material: Carbon steel (e.g., ST52 grade)‌8, suitable for mechanical and hydraulic applications‌6.
  • Surface Treatment: Options include phosphating (anti-corrosion treatment)‌4 and honed/bright surfaces (improved smoothness)‌

2. Manufacturing Process

  • Cold Drawing: Precision cold-drawn process ensures dimensional accuracy and mechanical strength‌
  • Honing: Post-processing to achieve ultra-smooth internal surfaces for hydraulic systems‌

3. Dimensions & Tolerances

  • Outer Diameter (OD): 6-168mm
  • Wall Thickness: Tolerance within ±8% of specified thickness 
  • Length: 5.8M / 6M / 11.8M , random length 5-5.8M

4. Mechanical Properties

  • High-pressure resistance and excellent load-bearing capacity‌
  • Optimized for applications requiring tight tolerances and structural integrity‌

5. Key Features

  • High Precision: Tight dimensional tolerances for seamless integration in complex assemblies‌
  • Surface Quality: Bright or honed surfaces reduce friction and enhance cleanliness in hydraulic/pneumatic systems‌
  • Durability: Enhanced strength from cold-working processes‌

6. Applications

  • Hydraulic/Pneumatic Systems: Cylinder tubing and pipelines‌
  • Automotive: Precision components requiring high dimensional stability‌
  • Heavy Machinery: Structural parts in mechanical engineering‌
  • Mechanical properties at room temperature
    Steel Grade Minimum values for the delivery condition
    Steel Name Steel Number BK BKW BKS GBK NBK
    Rm A % Rm A % Rm ReH A % Rm A % Rm ReH A %
    Mpa Mpa Mpa Mpa Mpa Mpa Mpa
    St 35 1.0308 480 6 420 10 420 315 14 315 25 340 to 470 235 25
  • Standard Grade Chemical Components (%)
    Symbol Material No. C Si Mn P S
    DIN2391 St 35 1.0308 ≤0.17 ≤0.35 ≥0.40 ≤0.025 ≤0.025

Keywords: DIN2391, Precision seamless steel tube, steel tube, seamless steel tube

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