Seamless Boiler Tubes BS3059-2 , round mechanical tubing with Varnish / Passivation Surface

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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

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CHANGZHOU RUIYUAN STEEL TUBE CO., LTD.
INDUSTRIAL ZONE, ZOUQU TOWN, WUJIN DIST., Changzhou, Jiangsu, China (Mainland)
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