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Black Painted Hollow Steel Tube ST52.4 , Cold Drawing Precision Steel Pipe

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
Product Details
Material ST37.4,ST52.4,E235,E355,26MnB5,34MnB5 OD 6-120mm
Thickness 0.5-15mm Shape Round
Processing Cold Drawn, Cold Rolled Certificate TS16949,DNV
High Light

hollow steel bar

,

round hollow tube

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Product Description

Seamless Precision Hollow Carbon Steel Tube For Hydraulic Systems And Auto Parts

 

Description:

 

Chemical Composition and Mechanical Performance:

Table 1- Chemical composition
Steel Grade C% Si% Mn% P% S% AL%
E215 ≤0.10 ≤0.05 ≤0.7 ≤0.025 ≤0.025 ≥0.025
E235 ≤0.17 ≤0.35 0.4-1.2 ≤0.025 ≤0.025  
E255 ≤0.21 ≤0.35 0.4-1.1 ≤0.025 ≤0.025  
E355 ≤0.22 ≤0.55 ≤1.6 ≤0.025 ≤0.025  

 

 

 

 

 

 

 

 

Delivery Conditions:

+C Hard. No final treatment after final cold drawing.

+LC Soft. Final heat treatment is followed by a suitable drawing pass (limited reduction of area).

+SR Stress Relieved. After final cold drawing, the tubes are stress relieved in a controlled atmosphere.

+A Annealed. After final cold drawing, the tubes are annealed in a controlled atmosphere.

+N Normalized. After final cold drawing, the tubes are normalized in a controlled atmosphere.

 

Process:

The cold drawn welded tube is produced by drawing ERW (electric resistance welded tube) through a die and over a mandrel plug.During this process the sizing (wall thickness, inside and outside diameter), as well as weld integrity and surface finish is closely controlled to produce tube of the required size and mechanical property characteristics.

 

Tube Finishing Options:

Our tubes can be additionally treated to achieve the exact finishes and ends needed by customers. These are some of the additional operations that can be performed on our tube:Drawing, Heat treatment, Bulging, Swaging, Cutting, Deburring, Vibro cleaning, Threading,De-rusting, Chamfering, Washing.

 

Surface treatment: Oiled, black painted, hot dipped galvanized or phosphate coating as required.

Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

 

Standard AND Optional Testing:

Visual and dimensional test 100%.

Eddy current test 100% acc. to EN 10246-3.

Ultrasonic test 100% acc. to EN 10246-7.

Chemical composition.

Impact test.

 

Mill Test Certificate:

The product is supplied with 3.1.B inspection certificate,according to the standards EN 10204 and ISO 10474.