• Jiangsu Hongbao Group Co., Ltd.
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    A good collaboration!
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Contact Person : Angela
Phone Number : 86-512-58715276
Whatsapp : +8615895686919

Car Hydraulic Hollow Steel Pipe Cold Finishing EN10305 E235 E355 Material

Place of Origin Jiangsu, China
Brand Name Hongbao
Certification TS16949,DNV,PED,ISO,TUV,LR
Model Number HBHST-1
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details Original packaging according to the customers Export standard package in bundled or as required.
Delivery Time within 50 days
Supply Ability 30000MT per year

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Product Details
Brand Hongbao Certificate TS16949,DNV,PED,ISO,TUV,LR
Material ST37.4,ST52.4,E235,E355,26MnB5,34MnB5 OD 6-120mm
Thickness 0.5-15mm Length 12000mm Max
Shape Round Type Welded Or Seamless
High Light

hollow steel bar

,

hollow steel pipe

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Product Description

EN10305 E235 E355 Cold Finishing Hollow Steel Round Tube For Car Hydraulic System

 

Description:

 

Delivery conditions

1. NBK(+N)

after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium

2. GBK(+A)

after cold forming, annealing in non oxidizing medium protective gas

3. BK(+C)

the final heat treatment after cold forming, therefore small steel pipe plastic, the plastic degree does not guarantee

4. BKW(+LC)

after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)

 

 

 

 

 

 

 

 

 

 

 

 

 

Production Process:
Cold rolling by Cold pilger machine and Cold rolling machine
Size: 6-350mm

WT: 1.0-35mm


1. Standard:
EN10305-2 Cold Drawn Precision Seamless Steel Pipes


2. Steel Grade:
E155,E195,E235,E275,E355, other materials upon agreement with customers.


3. Production method:
Cold drawn on the welded steel tubes, to reach high accuracy on the OD and WT tolerance

 

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


5. Deliver condition:
1) +C No heat treatment after the final cold drawing process
2) +LC After the final heat treatment there is a suitable drawing pass
3) +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
4) +A After the final cold drawing process the tubes are annealed in a controlled atmosphere
5) +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere