Delivery Time:20~30 days after order
Certification:ISO9001, ISO14001, PED

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.

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