Main Products: Carbon Steel Tube
ASTM B633-07 Galvanized Steel Pipe
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Zhangjiagang Sheng Ding Yuan Pipe-Making Co.,Ltd
Business Type: Trading CompanyMain Products: Carbon Steel Tube
Seamless Zinc Coated Steel Pipe DIN1630 ST37.4 ST44.4 ST52.4 0.5mm - 7mm TH
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Product Details
ASTM B633-07 Cold Drawing Seamless Precision Steel Tube With 5-25um Coating Thickness
Quick Detail:
Precision environmental galvanized tube
No deformation after cold bending,no crack after flaring and flattening.
The tube has good property of antirust.
Description:
About high precision galvanized pipe, \"ShengDingYuan\" can meet the technical requirements, using environmental protection galvanized + 6 Gr, the thickness of the galvanized layer according to the requirements of the guests (6 um - 12 um), such as salt spray testing can be carried out in accordance with the requirements of the guests.
Surface effect: after galvanized,the surface is much brighter than NBK tube, surface colour distributed and very beautiful.After galvanizing on precision seamless tube,different levels of bending and deformation can be made without zinc dropping.
The Galvanized surface rust is used in the working conditions of the environment, such as the sea, the outdoor environment for a long time.
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/GBK+Zinc coated tube.
| Galvanized tube category and related standard | |||
| Galvanized tube category | Related Standard | Zinc coating thickness | Salt spray test |
| Gr3+ Galvanized tube with blue and white zinc |
ASTM B633-07 (Type III,SC 1/2/3/4) |
5-25um | 24--72 hours without white rust;48--168 hours without red rust |
| Gr3+ Galvanized tube with color zinc |
ASTM B633-07 (Type II,SC 1/2/3/4) |
5-25um | 48--96 hours without white rust;48--240 hours without red rust |
| Gr6+ Galvanized tube with color zinc |
ASTM B633-98 (Type II,SC 1/2/3/4) |
5-25um | 24--96 hours without white rust;48--124 hours without red rust |
|
Chemical composition(cast analysis)a |
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|
Steel grade |
% by mass |
|||||
|
Steel name |
Steel number |
C |
Si |
Mn |
P |
S |
|
max. |
max. |
max. |
max. |
|||
|
ST35 |
1.0305 |
0.17 |
0.35 |
≥0.40 |
0.025 |
0.025 |
|
ST45 |
1.0408 |
0.21 |
0.35 |
≥0.40 |
0.025 |
0.025 |
|
ST52 |
1.0580 |
0.22 |
0.55 |
≤1.60 |
0.025 |
0.025 |
|
Mechanical properties at room temperature |
||||||
|
Steel grade |
Minimum values for the delivery condition |
|||||
|
Steel name |
Steel number |
BK |
BKW |
BKS |
GBK |
NBK |
|
Rm |
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