JIS G3445 STKM 11A Carbon Steel Structural Pipe
GNEE is the main supplier of JIS G3445 Grade STKM 11A Carbon Steel Mechanical Tube, we provide high quality steel pipes to customers all over the world according to their needs.
JIS G3445 STKM11A is the standard material of carbon seamless steel pipe for mechanical parts in Japan, JIS G3445 STKM11A high quality carbon structural steel pipe is a carbon steel with a carbon content of less than 0.8%. Compared with carbon structural steel, it contains less sulfur, phosphorus and non-metallic inclusions, and has excellent mechanical properties.
JIS G 3445 Grade STKM 11A structural pipe is mainly used in the automotive industry, indoor and outdoor building structures, water pipelines, gas lines, oil and gas industries, etc.
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Chemical Properties
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
|---|---|---|---|---|---|---|---|---|---|
| max 0.12 | max 0.35 | max 0.60 | 0.04 | 0.04 | – | – | – | – | – |
Mechanical Properties
| Yield Strength | Tensile Strength | Elongation A5 min | |||
|---|---|---|---|---|---|
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 290 | – | – | 35 | ||
JIS G3445 STKM 11A Seamless Carbon Steel Tube

Advantages of GNEE
GNEE pipes and tubes have a wide range of applications in many market sectors, including the oil and gas, petrochemical and construction industries. And we can offer different properties for different purposes (e.g. corrosion protection).
Gnee Packaging and shipping

FAQ
1. Can I get a sample before ordering?
Yes of course. Usually our samples are free. We can produce according to your samples or technical drawings. We can manufacture molds and fixtures.
2. How can you guarantee that what I get will be good?
We are a factory with 100% pre-delivery inspection to ensure quality.
3. How do you make our business establish a long-term and good relationship?
1. We maintain good quality and competitive prices to ensure our customers benefit;
2. We respect every customer as our friend and we sincerely do business and make friends with them.
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