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Company Info
Zhangjiagang Shengdingyuan Pipe-making Co.

Street Address: Gaoqiao Industial Park, Houcheng, Jingang Town, Zhangjiagang City

City: Suzhou

Province: Jiangsu

Country/Region: China

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Seamless Steel Tubes DIN2391 ST35 NBK For Automotive Parts

Seamless Steel Tubes DIN2391 ST35 NBK For Automotive Parts

Typical Clients:  Volkswageon

Market Type:  OE Market

Place of origin:  CHINA

Price Terms:  CIF

Delivery Port:  ShangHai Port

Minimum Order:  500Centimeter/Centimeters

Product Attribute:

Material:Steel

Typical Clients:  

Volkswageon

Production Description:

Specifications:

 Tube diamensions for the automotive industry 
Outside diameter ranges from 4 to 60 mm and wall thickness ranges from 0.5 to 7mm. Precision seamless steel tubes are delivered according to DIN2391 standard with ST35,ST45,ST52 material.

TOLERANCE TABLE OF STEEL TUBE


NAME 		 SCOPE(mm) GB (mm) DIN (mm) Enterprise control(mm) Special high-precision(mm) 
OD              Out Diameter 4-30 ±0.1 ±0.08 ±0.05 ±0.03
31-40 ±0.15 ±0.15 ±0.05 ±0.03
41-50 ±0.20 ±0.20 ±0.08 ±0.03
51-60 ±0.25 ±0.25 ±0.08 ±0.03
Wall thickness   0.5-7 ±10%,Min±0.12 ±10% ±10%,Min±0.05 ±10%,Min±0.03

Steel grades and chemical composition for DIN2391 precision tubes for the automotive industry

Chemical composition(cast analysis)
Steel grade % by mass
Steel name Steel number C Si Mn P S
max. max.   max. max.
     ST35 1.0305 0.17 0.35  0.40 0.025  0.025 
 ST45 1.0408 0.21  0.35  0.40  0.025  0.025
 ST52 1.0580  0.22  0.55  1.60  0.025        0.025  



Seamless Steel Tubes DIN2391 ST35 NBK For Automotive Parts
 

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