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JIS G 3461 SEAMLESS CARBON STEEL TUBE FOR BOILER AND SUPERHEARTER
Specifications:
Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling
Ends: BE, ends caps
Marking: as per requirement
Size:(mm) As per standard or as per customer’s requirement
Length: ≤16m. Fixed Length (6m,9m,12m, 16m or as per requirement) or random length
Package: Hexagonal Bundles with steel strips and plastic wrapping outside/Wooden box/Wooden crate/Steel frame/As per customer’s requirement
CHEMICAL COMPOSITION (%):
| Grade | Chemical Composition | |||||||||
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | |
| STB340 | ≤0.18 | ≤0.3 | 0.300.60 | ≤0.035 | ≤0.035 | / | / | / | / | / |
| STB410 | ≤0.32 | ≤0.35 | 0.300.80 | ≤0.035 | ≤0.035 | / | / | / | / | / |
MECHNICAL PROPERTIES (Minimum Values) :
| Grade | Tensile Strength (MPa) | Yield Strength(MPa) | Elongation(%) | ||
| STB340 | ≥340 | ≥175 | ≥35 | ||
| STB410 | ≥410 | ≥255 |
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