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Outer Diameter φ6 - φ80 Welded Steel Pipe Powerful Welding Strength For Hydraulic System

Place of Origin China
Brand Name Hongbao
Certification TS16949, ISO9001, OHSAS18001 etc.
Model Number HB-WT-001
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details Seaworthy Wooden box, customized Packing
Delivery Time 30-45 Days
Supply Ability 60000 MT per Year
Product Details
Material E355 Shape Round
Application Automotive Part, Hydraulic System, High-precsion Machining,etc. Delivery Condition +C,+LC,+SR,+N,+A
Standard EN10305-2 Certificate TS16949,DNV
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welded steel pipe

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cold drawn welded tubes

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Product Description

Standard En10305-2 Material E355 High Precision Weld Steel Tube

 

Introduce

Cold drawn welded pipe, it is the production of one of the best choice of the multistage hydraulic cylinder tube, its process and precision seamless steel tube cold drawing process, is to use precision resistance welding (ERW) precision drawing, manufacturing the EN 10305-2 eu mechanical cold drawn steel tube welding standard.

 

Process

After welding of resistance welded pipe, the overall pipe body passes through the positive fire to ensure that the weld and heat affected zone are in the same quality as the other parts in the metallographic structure and mechanical properties; Cold drawing and subsequent heat treatment (eliminating internal stress) and steel pipe have good size and mechanical properties.

 

Main Date

Material: E355
Standard: EN10305-2
Delivery Condition: +C,+LC,+SR,+N,+A
Size Range: Outer Diameter:φ6-φ80
Wall Thickness: 0.5-10
Application: High Precision Steel Tube is Widely Used in Automotive Part, Hydraulic System, High-precsion Machining.

 

Produced by cold drawing over mandrel and die on the ERW welded steel tube, to achieve better tolerance and good concentricity, both outside and inside weld seam is completely removed during the cold drawing process.

 

 

Advantage (compare with seamless cold drawn tube)

Better shape

Improved quality surface

Tight Excentricity and wall thickness tolerances

Good toughness at low temperature

USA Market: 90% of the cylinder in the USA market are produced with welded tubes

Cost fix Lengths More Cheaper

 

Chemical Compositions

 

Steel Number Quality Level Thickness/mm Deoxidize Method C(%)≤ Si(%)≤ Mn(%)≤ P(%)≤ S(%)≤
E185(Fe310) 0 - - - - - - -
E235(Fe360)

A

B

 

 

 

C

D

≤16

>16-25

≤40

>40

 

 

 

N

-

-

E

NE

NE

GF

0.22

0.17

0.20

0.17

0.20

0.17

0.17

-

0.40

0.40

0.40

0.40

0.40

0.40

-

1.40

1.40

1.40

1.40

1.40

1.40

0.050

0.045

0.045

0.045

0.045

0.040

0.035

0.050

0.045

0.045

0.045

0.045

0.040

0.035

E275(Fe430)

A

B

C

D

≤40

>40

-

E

NE

NE

GF

0.24

0.21

0.22

0.20

0.20

-

0.40

0.40

0.40

0.40

-

1.50

1.50

1.50

1.50

0.050

0.045

0.045

0.040

0.035

0.050

0.045

0.045

0.040

0.035

E355(Fe510)

C

D

≤30

>30

≤30

>30

NE

NE

GF

GF

0.20

0.22

0.20

0.22

0.55

0.55

0.55

0.55

1.60

1.60

1.60

1.60

0.040

0.040

0.035

0.035

0.040

0.040

0.035

0.035

 

Packaging

In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing

 

 Payment 

30% TT in advance, balance before shippment or B/L at sight.
Outer Diameter φ6 - φ80 Welded Steel Pipe Powerful Welding Strength For Hydraulic System 0