BS3059-2 STEEL BOILER AND SUPERHEATER TUBES
Part 2. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties
Specifications:
Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling
Ends: BE/PE, ends caps
Marking: as per requirement
Delivery Condition: Annealed/Normalized/Tempered
Size:(mm)
OD: 12 – 127mm WT: 1 – 12mm
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≤ |
|
360 |
0.17 |
0.10~0.35 |
0.40~0.80 |
0.035 |
0.035 |
|
440 |
0.12~0.18 |
0.10~0.35 |
0.90~1.20 |
0.035 |
0.035 |
|
|
|
|
|
|
|
MECHNICAL PROPERTIES:
|
Grade |
Tensile Strength σb(Mpa) |
Yield Strength σs(Mpa) |
Elongation δ(%) |
|
|
360 |
360~500 |
≥235 |
≥24 |
|
|
440 |
440~580 |
≥245 |
≥21 |
|
INSPECTION AND TEST:
CHEMICAL COMPOSTION TEST. MECHANICAL PROPERTIES TEST(tensile strength, yield strength, elongation, flaring, flattening,impact, etc). SURFACE AND DIMENSION CHECK. NON-DESTRUCTIVE TEST(eddy current test/ultrasonic test), HYDRAULIC TEST.
Description:
BS3059-2 is specification for carbon, alloy and
