Q235 galvanized steel pipe is indeed a widely used ordinary carbon structural steel. This steel is divided into different types according to quality grade, Q235A, Q235B, Q235C and Q235D. These different grades are mainly divided based on the chemical composition, mechanical properties and process properties of the steel.
Q235 steel has a lower carbon content, which means it can be used in production without the need for heat treatment. This kind of steel has good plasticity and weldability, can be used for bending, cutting and welding operations, and has strong adaptability.
Hot-dip galvanized steel pipe has the advantages of uniform coating, strong adhesion, and long service life. Q235 galvanized steel pipe is used in a wide range of applications, such as construction, oil and gas, and transportation. Galvanized coating can provide long-term anti-rust protection, and this kind of steel pipe is widely used in water supply, drainage, construction, fence and other fields.
Chemical Composition of Q235
|
Grade |
C |
Mn |
Si |
S |
P |
|
Q235A |
≤0.22% |
≤1.4% |
≤0.35% |
≤0.050 |
≤0.045 |
|
Q235B |
≤0.20% |
≤1.4% |
≤0.35% |
≤0.045 |
≤0.045 |
|
Q235C |
≤0.17% |
≤1.4% |
≤0.35% |
≤0.040 |
≤0.040 |
|
Q235D |
≤0.17% |
≤1.4% |
≤0.35% |
≤0.035 |
≤0.035 |
Physical Properties of Q235
|
Physical Properties |
Metric |
US/Imperial |
|
Density |
7.85 g/cc |
0.284 lb/in³ |
Mechanical Properties of Q235
|
Mechanical Properties |
Metric |
US/Imperial |
|
Tensile Strength, Ultimate |
400 – 550 MPa |
– |
|
Tensile Strength, Yield |
250 MPa |
– |
|
Elongation at Break |
0.2 |
0.2 |
|
|
0.23 |
0.23 |
|
Modulus of Elasticity |
200 GPa |
29000 ksi |
|
Compressive Yield Strength |
152 MPa |
22000 psi |
|
Bulk Modulus |
160 GPa |
23200 ksi |
|
Poissons Ratio |
0.26 |
0.26 |
|
Shear Modulus |
79.3 GPa |
11500 ksi |
Production Process
Raw Material → Material Inspection → Uncoiling → Flattening → Cutting ＆ Butt welding → Loop storing → Forming → Welding → Flatten Weld joint → Hot dip galvanized → Water cooling Straightening ＆ Sizing → Pipe cutting with fixed length → Product inspection → Products.
FAQ
1. Q. Why choose us?
A. As an international experienced and professional supplier, our company has been engaged in the steel business for more than years. We can provide our customers with a variety of high quality steel products.
2. Q. Can I get samples before order?
A. Yes, of course. Usually our samples are free. we can produce by your samples ortechnical drawings.
3. Q. Do you have a quality control system?
A. Yes, we have our own quality control laboratory. Third party testing service is also available.
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