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NBK Bright Annealing Steel Tube / Pneumatic Caparo Seamless Precision Steel Pipe

Product Details:
Place of Origin: China
Brand Name: TORICH
Certification: ISO 9001-2008 ISO 14001 TS 16949 DNV
Model Number: EN10305-4
Payment & Shipping Terms:
Minimum Order Quantity: 5 Ton
Price: negotiable
Packaging Details: Packing in wooden, hexagonal box or other seaworthy ways
Delivery Time: 30 days
Payment Terms: T/T L/C D/P D/A WesternUnion MoneyGram Others
Supply Ability: 60000 Ton/Year

Detail Information

Material: Carbon Steel Steel Grade: E215,E235,E275,E355, Other Materials Upon Agreement With Customers.
Shape: Round Size: O.D :6-350mm WT:0.5-35mm
Standard: EN10305-4 Usage: For Hydraulic And Pneumatic Power Systems
Manufacture Technique: Seamless Cold Drawn Surface Treatment: Phosphatization Galvanization Chromatization Type Blue-white Etc
Characteristic: High Accuracy On The OD And WT Tolerance
High Light:

seamless steel pipe


seamless carbon steel tube

Product Description

NBK Bright Annealing Steel Tube Hydraulic and Pneumatic Caparo Precision Tubes


Seamless precision steel pipe EN10305-4
Size: 6-350mm
Steel grade: E235,E355 etc


1. Standard:   
Cold drawn tubes for hydraulic and pneumatic power systems

2. Steel Grade: 
, other materials upon agreement with customers.


Steel Grade and Chemical Compositions:                            

Steel Grade C Si Mn P S Al
Steel Name Steel Number max max max max max min
E215 1.0212  0.10  0.05 0.70  0.025 0.025 0.025
E235 1.0308  0.17 0.35 1.20  0.025 0.025 -
E355 1.0580  0.22 0.55 1.60  0.025 0.025 -


3. Production method: 
Cold drawing on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance,
with certain heat treatment to achieve better mechanical properties for bending and pressure purposes

4.Size range: 
O.D.:5-80mm     W.T.:1-15mm      L:max12000mm

5. Packing: 
In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing 

6.Deliver condition:

+N After the final cold drawing operation the tubes are normalized in a controlled atmosphere
                                       Mechanical properties at room temperature
Steel Grade Yield Strength ReH min Mpa Tensile Strength Rm 
 min   Mpa
Elongation  A min  %
Steel Name Steel Nubmer
E215  1.0212  215 290-430 30
E235 1.0308  235 340-480 25
E355 1.0580  355 490-630




Surface smoothness could be reached by EN10305-4 request Ra≤2μm, and better than standard.
Surface treatment could be:
1. Protection by phosphatization
2. Protection by galvanization, and chromatization type blue-white
3. Protection by galvanization and chromatization type yellow
4. Protection by galvanization and chromatization type olive green

NBK Bright Annealing Steel Tube / Pneumatic Caparo Seamless Precision Steel Pipe 0  NBK Bright Annealing Steel Tube / Pneumatic Caparo Seamless Precision Steel Pipe 1

NBK Bright Annealing Steel Tube / Pneumatic Caparo Seamless Precision Steel Pipe 2


Normative references:

EN10002-1, Metallic materials- Tensile testing- Part 1: Method of test at ambient temperature

EN10020, Definition and classification of grades of steel

EN10021, General technical delivery requirements for steel and iron products.

EN10027-1, Designation systems for steel - Part 1: Steel names, principal symbols.

EN10027-2, Designation systems for stee l- Part 2: Numerical system

EN10052, Vocabulary of heat treatment terms for ferrous products

EN10204, Metallic Products - Types of inspection documents

EN10233, Metallic materials - Tube - Flattening test

EN10234, Metallic materials - Tube - Drift expanding test

EN10246-1, Non-Destructive testing of steel tubes - Part 1: Automatic electromagnetic testing of seamless and welded(except submerged arc-welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness


EN10256, Non-Destructive testing of steel tubes - Qualification and competence of level 1 and 2 non-destructive testing personnel


EN ISO377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing ( ISO 377:1997)


EN ISO 2566-1, Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels ( ISO2566-1:1984)


ENV10220, Seamless and welded steel tubes - Dimension and masses per unit length.


EN10266, Steel Tubes, fittings and structural hollow sections - Definition and Symbols for use in products standards

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