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 |
≥195 |
≥25 |
|
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:
This part of BS3059 specifies requirements for plain end, seamless and welded, low tensile carbon steel tubes, not exceeding 127mm outside diameter and not exceeding 12.5 mm thickness for use in boilers and superheaters. Only one grade of steel is included in the specification and is designated 320.
Top quality products
Applications:
Boiler tube and superheater service. Boiler flue, air preheating pipe line, superheater. Heat-exchanger and other heat supply/heat transfer equipment, etc.
Competitive Advantage:
Always put quality on first consideration makes us keep our qulity stable and good. Always put customer’s benefit before ours makes our good service and gain us good reputation.
Advanced equipments. Sincere , truth and careful attitude on communication and production.
