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JIS G 3462 SEAMLESS COLD DRAWN BOILER TUBE AND SUPERHEARTER TUBE
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 | |
| STBA22 | ≤0.15 | ≤0.50 | 0.300.60 | ≤0.035 | ≤0.035 | 0.801.25 | 0.450.65 |
| STBA23 | ≤0.15 | 0.501.00 | 0.300.60 | ≤0.030 | ≤0.030 | 1.001.50 | 0.450.65 |
MECHNICAL PROPERTIES (Minimum Values) :
| Grade | Tensile Strength (MPa) | Yield Strength(MPa) | Elongation(%) |
| STBA22 | ≥415 | ≥210 | ≥30 |
| STBA23 | ≥415 | ≥210 | ≥30 |
INSPECTION AND TEST:
CHEMICAL COMPOSTION TEST. MECHANICAL PROPERTIES TEST(tensile strength, yield strength, elongation, flaring, flattening, hardness, etc). SURFACE AND DIMENSION CHECK. NON-DESTRUCTIVE TEST(eddy current test/ultrasonic test), HYDRAULIC TEST.
Description:
JIS G 3462 SEAMLESS STEEL TUBE FOR BOILER AND SUPERHEARTER. Mainly used for boiler, superheater, boiler flue, preheating tubes, etc.
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JIS G 3462 Seamless Cold Drawn Superhearter and Boiler Tubing Grade STBA22 / STBA23
