BS 3059-1 Steel Boiler And Superheater Tubes
Scope
BS 3059-1 Steel boiler and superheater tubes,Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties.
Mainsteel tube grade:
360, 440, 243, 620-460, 622-490
BS 3059 Steel boiler and superheater tubes Quick Details
Material:360,440,243,620-460,622-490
Wall thickness(WT): 3.4mm——12.9 mm.
Outer diameter (OD): 19.0mm——168.3 mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded

Description

Chemical Composition(%) Of BS 3059 Steel boiler and superheater tubes
Grade Chemical composition limits, %
C Si Mn P max S max Ni Cr Mo
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 / / /
243 0.10-0.20 0.10-0.35 0.40-0.80 0.035 0.035 ≤0.20 ≤0.30 0.25-0.30
620-460 0.10-0.15 0.10-0.35 0.40-0.70 0.030 0.030 ≤0.20 0.70-1.10 0.45-0.65
622-490 0.08-0.15 ≤0.50 0.30-0.70 0.025 0.020 ≤0.20 2.00-2.50 0.90-1.20
Mechanical Properties Of BS 3059 Steel boiler and superheater tubes
Grade Mechanical properties
Steel type Steel number Yield strength MPa Min. Tensile strength MPa Elongation % Min.
Carbon 360 235 360-510 24
Carbon manganese 440 245 440-580 21
0.3%Mo 243 275 480-630 22
1%Cr0.5%Mo 620-460 180 460-610 22
2.25%Cr1%Mo 622-490 275 490-640 20
We can customize and innovate the boiler tubes with advanced technology. Our all boiler tubes are tested in accordance to internationally recognized standards or our own more stringent internal test procedures, which is developed considering the harsh field conditions. Tension test, flattening test, flaring test, hardness test, hydrostatic or nondestructive electric test be made on  specimens.