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Quick Details

  • Standard: ASTM, BS, DIN, GB, JIS
  • Standard2: ASTM A179-1990, BS 6323, DIN 1629/3, DIN 1630, DIN 17175, DIN 2391, DIN 2448, DIN EN 10216-1-2004, DIN EN 10305, GB/T 3639-2000, GB/T 8162-1999, GB/T 8163-1999, JIS G3445-2006
  • Grade Group: 10#-45#, 16Mn, ST35-ST52
  • Grade: 10#, 20#, 45#, 16Mn, ST35, St35.4, St35.8, St37, St37-2, ST37.4, St45, St45-4, St52, St52.4, ST54
  • Thickness: 0.3 - 10 mm
  • Section Shape: Round, Round
  • Outer Diameter(Round): 2 - 60 mm
  • Place of Origin: Jiangsu, China (Mainland)
  • Secondary Or Not: Non-secondary, Non-secondary
  • Application: precision seamless steel tube, automobile fuel line, oil tube,
  • Technique: Cold Drawn, Cold Drawn
  • Certification: TS16949 ISO9001 for st37.4 phosphated tube nbk
  • Surface Treatment: annealed galvanized, or black phosphated st37.4 phosphated tube nbk
  • Special Pipe: precision seamless steel tube
  • Alloy Or Not: Non-alloy
  • Name: precision seamless steel tube
  • Standard:: DIN 2391, EN10305-1, EN10305-4, BS 6323, ISO 8535
  • STEEL GRADE:: ST30Si, ST30Al, ST35, ST37, ST37.4, ST45, ST52, ST52.4, etc
  • Delivery condition:: BK, GBK, BKW, BKS or NBK for st37.4 phosphated tube nbk
  • Certificate:: ISO 9001 TS16949
  • Outer Diameter: 2-60 mm

Packaging & Delivery

Packaging Details DIN 1630 ST 52.4 OD 5mm galvanized products precision seamless steel tube sea worthy packing in bundles or boxes
Delivery Time Shipped in 30 days after payment

precision seamless steel tube





DIN 1630 ST 52.4 OD 5mm galvanized products precision seamless steel tube



Product Description







Scope (mm)



GB Series (mm)



DIN series  (mm)

Enterprise internal control standards (mm)


Special high-precision (mm)


Out diameter






















Wall thickness


±10%; MIN±0.15


±10%; MIN±0.05

±10%; MIN±0.03


Hydraulic steel tube








ST37.4 ST52.4


1) BA   2)Black phosphating 3) Galvanizing

      OD2 -60mm  × WT0.3 -10mm  



E235          E355




CFS 360


Zinc Layer thickness more than 8um

Other steel grades also available upon request






Company Information



 Certificates: according to EN 10204 3.1 

Inspection Items:  Tensile stength, Yield stength, Elongation, Flattenging, Flaring 

                Chemical analysis

                Eddy Current Test 100%, Size and surface checking 100%

Other test item can be arranged as per request



1.Can you provide a free sample to check the quality?
Free sample depends on the requirements :sample size,quantity,mechancial performance and other details.

2.How can i get the sample?
The sample will sent to you via Express (Express fee pay by your side)and arrive in 3-5 days.

3.How about your capacity?
Seamless pipes:500Ton/Month

4.Could the tube be customized for us?

5.What are your terms of payment?
30%-50% payment by T/T in advance and balance T/T before shipping,Details needs for checking.

6.Where is your factory?
Zhangjiagang city,2 hours away from Shanghai.

7.How can i get the quotation A.S.A.P?
Send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
A.Steel grade;
B.Process standard;
C.Order quantity;
D.Trade terms

8.How about the minimum order quantity?
Normally for one size above 1 ton,but it depends on the real situation.

9.What is our main product?
Hydraulic and pneumatic fluid line tube,Cold drawn seamless steel tube,Precision welded
tube,Special section tube,Rigid tube lines

Contact us


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Trade Assurance
China (Mainland) | Manufacturer, Trading Company
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Supplier Assessments:
2 Transactions 10,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $57,000
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