BS3059 Steel Boiler And Superheater Tubes

2021-12-09
BS3059 Steel boiler and superheater tubes
 
Low tensile carbon steel tubes without specified elevated temperature properties.Requirements for plain end, seamless and welded tubes, not exceeding 127mm outside diameter and not exceeding 12.5mm thickness. for use in boilers and super heaters.


BS3059 boiler tube Specification
Type：Seamless Steel Pipe. 
Material：360，440，243，620-460，622-490.
WT：5-12.5mm. 
OD：10-127mm
Length：6M or specified length as required. 
Ends：Plain End、Beveled End、Treaded
 
Additional Info
Payment Terms：T / T, LC
Surface：Tubes will be varnished (Outside only) to prevent rust.
Marking：Standard + Steel Grade + Size + Heat No + Lot No
Package：According To Per Customers' Require
Delivery time：Tubes will be completed within 30 days, and urgent delivery time can be discussed.


Steel pipe production process:Hot rolled, Cold drawn



 
Mainsteel tube grade
360，440，243，620-460，622-490


 
Chemical Composition of BS3059 boiler  tubes

Grade 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 0.90-1.2
 


Mechanical properties of BS3059 boiler  tubes
 
Grade 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


Specification of BS3059 boiler  tubes

  2.0 2.3 2.6 2.9 3.2 3.6 4.0 4.5 5.0 5.6 6.3 7.1 8.0 8.8 10.0 11.0 12.5
mm kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m kg/m
25.4 1.15 1.31 1.46 1.61 1.75 1.94  2.11 2.32 2.52                 
26.9  1.23  1.40  1.56   1.72 1.87  2.07 2.26  2.49 2.70                
31.8 1.47 1.67  1.87 2.07 2.26  2.50 2.74 3.03 3.30  3.62  3.96             
33.7 1.56 1.78  1.99 2.20  2.41 2.67  2.93  3.24  3.54 3.88  4.26            
38 1.78  2.02 2.27 2.51 2.75 3.05 3.35 3.72 4.07 4.47 4.93 5.41 5.92        
42.4   2.27  2.55  2.82 3.09  3.44 3.79 4.21 4.61 5.08  5.61 6.18 6.79        
44.5   2.39  2.69 2.98 3.26 3.63 4.00 4.44 4.87  5.37 5.94 6.55  7.20 7.75       
48.3    2.61 2.93 3.25 3.56 3.97 4.37 4.86 5.34 5.90 6.53 7.21 7.95 8.57      
51   2.76 3.10 3.44 3.77 4.21 4.64 5.16 5.67 6.27 6.94 7.69 8.48 9.16 10.1     
57     3.49 3.87 4.25  4.74  5.23 5.83 6.41 7.10 7.88 8.74  9.67 10.5 11.6    
60.3      3.70 4.11 4.51 5.03 5.55 6.19  6.82 7.55  8.39 9.32 10.3  11.2  12.4  13.4   
63.5      3.90 4.33 4.76  5.32 5.87  6.55 7.21 8.00 8.89 9.88  10.9 11.9   13.2  14.2  
70     4.32  4.80 5.27  5.90  6.51   7.27  8.01  8.89 9.90   11.0 12.2  13.3   14.8   16.0   
76.1        5.24  5.75  6.44  7.11  7.95  8.77   9.74   10.8  12.1  13.4 14.6  16.3 17.7   19.6
82.5          6.26  7.00   7.74   8.66   9.56   10.6  11.8 13.2  14.7 16.0  17.9 19.4   21.6
88.9         6.76  7.57  8.38  9.37  10.3   11.5   12.8  14.3   16.0  17.4 19.5   21.1  23.6
101.6            8.7  9.63 10.8  11.9 13.3  14.8 16.5 18.5 20.1 22.6 24.6 27.5
114.3              10.9 12.2 13.5 15.0 16.8 18.8 21.0 22.9 25.7 28.0 31.4
127                13.6 15.0 16.8 18.8 21.0 23.5 25.7 28.9 31.5 35.3


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