As a professional boiler steel pipe exporter, GNEE exports 20,000 tons of boiler steel pipes every year. And strictly guarantee product quality!
The A178 welded boiler tubes produced by GNEE are mainly made of carbon steel and carbon manganese steel, and are made by resistance welding process. They have smooth surface, balanced mechanical properties, tight tolerance, and no surface defects such as cracks, scale, cracks, sand eyes, delamination, scarring, etc.
When delivered, A178 boiler tubes can be subjected to different heat treatments as needed. In order to meet different use environments and needs, SA178 tubes can also be subjected to surface treatments such as oil immersion, painting, passivation, and phosphating.
Products Data
Chemical Composition of ASTM A178 Electric Resistance Welded Pipe
|
ASTM A178 Chemical Composition |
|||||
|
Grade |
Carbon |
Manganese |
Phosphorus |
Sulfur |
Silicon |
|
ASTM A178 Gr A |
0.06% - 0.18% |
0.27% - 0.63% |
0.035% Max |
0.035% Max |
- |
|
ASTM A178 Gr C |
0.35% Max |
0.80% Max |
0.035% Max |
0.035% Max |
- |
|
ASTM A178 Gr D |
0.27% Max |
1.00% - 1.50% |
0.30% Max |
0.015% Max |
0.10% Min |
Mechanical Properties of ASME SA 178 Boiler Tubes
|
Grade |
Tensile Strength |
Yield |
Max Hardness |
|
ASTM A178 Gr A / SA178A |
ksi: 47 MPa: 325 |
ksi: 26 MPa: 180 |
77 HRB (Rockwell B) |
|
ASTM A178 Gr C / SA178C |
ksi: 60 MPa: 415 |
ksi: 37 MPa: 255 |
79 HRB (Rockwell B) |
|
ASTM A178 Gr D / SA178D |
ksi: 70 MPa: 485 |
ksi: 40 MPa: 275 |
77 HRB (Rockwell B) |
Products display
Welded Tube SA178 Carbon Steel Pipes
Why Choose GNEE
GNEE is a professional steel pipe exporter with 12 production lines and an annual output of 50,000 tons. It has obtained the ISO9001 international quality management system certificate.
In addition, we can also provide a full range of processing services: cutting, chamfering, punching, welding, bending, notching, pickling.
Our experienced staff is always available to discuss your requirements and ensure full customer satisfaction. Your inquiries are always welcome! sales@gneetube.com
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FAQ
Can I get a sample before ordering?
Of course. Usually our samples are free. We can produce according to your samples or technical drawings. We can make molds and fixtures.
When is the delivery time?
The delivery time is usually around 15 days.
If there is stock, we can ship within 2 days.
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