BS3059-1 STEEL BOILER AND SUPERHEATER TUBES
Part 1: Specification for low tensile carbon steel tubes without specified elevated temperature properties
Specifications:
Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling
Ends: PE, ends caps
Marking: as per requirement
Delivery Condition: Annealed/Normalized/Tempered
Size:(mm)
OD: 12 – 127mm WT: 1 – 12.5mm
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 (%):
| CHEMICAL COMPOSITION (CAST ANALYSIS) IN% | ||||||
| Grade | C≤ | Si | Mn | P≤ | S≤ | |
| 320 | seamless | 0.16 | 0.10~0.35 | 0.30~0.70 | 0.040 | 0.040 |
MECHNICAL PROPERTIES:
| Grade | Tensile Strength σb(Mpa) | Yield Strength σs(Mpa) | Elongation δ(%) | ||
| 320 | seamless | 320~480 |
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