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Galvanized steel Tube for Hydraulic

Min. Order: 5 Ton
Payment Terms: L/C, T/T
Supply Ability: 650 tons per month
Place of Origin: Jiangsu

Company Profile

Location: Suzhou, Jiangsu, China (Mainland)
Business Type: Manufacturer
Main Products: Seamless Steel Tube, High Pressure Fuel Tube, Black Phosphate Hydraulic Tube, Galvanized Steel Tube

Product Detail

Means of Transport: Ocean, Air, Land
Production Capacity: 650 tons per month
Packing: covered with caps at two ends, packed with plastic film and linen
Delivery Date: within 40 days
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Product Description

Detailed Product Description

Material:ST37.4,ST44.4,ST52.4Standard:DIN1630
Outer Diameter:4 To 60mmSurface Treatment:Galvanized
Technique:Precision Cold Drawn Seamless Carbon Steel TubeThickness:0.5 To 7mm


High Precision Galvanized Steel Tubing DIN1630 , OD 4mm - 60mm TH 0.5mm - 7m

 

Quick Detail:

DIN1630 Precision zinc coated tube ST37.4 OD8x1.5x4000 

Good antirust effect,zinc distributed on the surface

No deformation after cold bending,no crack after flaring and flattening.

 

Description:

Synopsis of Process Routing: DIN highly accurate cold drawn bright seamless steel tube is used as the tube to be galvanized, the outer wall is electroplated, caps are covered at two ends of tube to prevent from the dust.

Main Features: Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.

 

Applications:

Automotive,military,railway industry,with high requirement of the tube's  brightness, cleanness,antirust,and antisepsis.

 

Specifications:

Size:OD4mm-60mm,TH0.5mm-7mm

Standard:DIN1630

Material: ST37.4,ST44.4,ST52.4

Delivery State:NBK+Black phosphate.

Galvanized tube category and related standard
Galvanized tube categoryRelated StandardZinc coating thicknessSalt spray test 
Gr3+ Galvanized tube with blue and white zincASTM B633-07
(Type III,SC 1/2/3/4)
5-25um24--72 hours without white rust;48--168 hours without red rust
Gr3+ Galvanized tube with color zincASTM B633-07
(Type II,SC 1/2/3/4)
5-25um48--96 hours without white rust;48--240 hours without red rust
Gr6+ Galvanized tube with color zincASTM B633-98
(Type II,SC 1/2/3/4)
5-25um24--96 hours without white rust;48--124 hours without red rust

 

Chemical composition(cast analysis)a

Steel grade

% by mass

Steel name

Steel number

C

Si

Mn

P

S

max.

max.


max.

max.

    ST37.4

1.0255

0.17

0.35

≥0.35

0.025

0.025

 ST44.4

1.0257

0.21

0.35

≥0.40

0.025

0.025

 ST52.4

1.0581

0.22

0.35

≤1.60

0.025

      0.025 

 

Mechanical properties at room temperature

Steel grade

Minimum values for the delivery condition

Steel name

Steel number


Rm(Mpa)

     Re(Mpa)

A(%)

 ST37.4

1.0255

235

350-480

25

ST44.4

1.0257

275

420-550

21

ST52.4

1.0581

355

500-650

21


Competitive Advantage:

Flattening test,Flaring test,tensile strength test,hydraulic pressure test are made for each batch of hydraulic tubing.

Internal surface with high cleaness and roughness.

We passed TS16949 certificate.

Main Customer:Contitech,Benteler.

We have to cooperate with Volkswagen.

We also have been reviewed by BMW.


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