After-sales Service: | 3 Years |
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Warranty: | 3 Years |
Type: | Seamless |
Technique: | Hot Rolled |
Material: | Carbon Steel |
Surface Treatment: | Black |
Samples: |
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Customization: |
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Suppliers with verified business licenses
Symbol | C | Si | Mn | P | S |
STB340 | 0.18 max. | 0.35 max. | 0.30 to 0.60 | 0.035 max. | 0.035 max. |
STB410 | 0.32 max. | 0.35 max. | 0.30 to 0.80 | 0.035 max. | 0.035 max. |
STB510 | 0.25 max. | 0.35 max. | 1.00 to 1.50 | 0.035 max. | 0.035 max. |
Symbol of grade | Tensile strength | Yield point or proof stress | Elongation % |
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Outside diameter | |||||
Under 10 mm | 10 mm or over to and excl. 20 mm | 20 mm or over | |||
Test piece | |||||
Test piece No. 11 | Test piece No. 11 | Test piece No. 11 Test piece No. 12 |
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Tensile test direction | |||||
N/mm2 | N/mm2 | Parallel to tube axis | Parallel to tube axis | Parallel to tube axis | |
STB340 | 340 min. | 175 min. | 27 min. | 30 min. | 35 min. |
STB410 | 410 min. | 255 min. | 17 min. | 20 min. | 25 min. |
STB510 | 510 min. | 295 min. | 17 min. | 20 min. | 25 min. |
Suppliers with verified business licenses