BS 3059 Seamless Tubes

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The BS 3059 Seamless Tubes are carbon steel tubes manufactured according to the British Standard BS 3059, which are designed to be specifically used for high-temperature and pressure. They are popular in the boilers, superheaters, heat exchangers and power generation systems, where strength, thermal stability, and dimensional accuracy are paramount.

BS 3059 Seamless Pipes for Boiler Applications

The production process of BS 3059 seamless carbon steel tubes involves a hot extrusion process whereby solid steel billets are pierced and moulded into tubes without any welded line. Such smooth construction offers a high mechanical design, high roundness, and better resistance to pressure and thermal stress than welded designs.

Composition of the BS 3059 material contains carbon, manganese, silicon, phosphorus and sulfur which provide good weldability, corrosion resistance and performance in reducing and corrosive environments. These tubes are normally provided up to a length of 24 inches and are characterized by precise ovality regulation and a steady wall thickness.

Carbon Steel BS 3059 Boiler Tubes Supplier in USA

As a stable supplier of BS 3059 boiler tubes, USA Piping Solution has both seamless and ERW grades, which can be used in general-purpose and high-pressure boilers. BS 3059 boiler tubes are made to work efficiently in high temperature environments in most cases of steam boats, power stations and heat recovery boiler systems. 

Such tubes are light, dimensionally correct, installable, and extremely strong. Besides the BS 3059 tubes, we also offer a full selection of carbon steel pipes and tubes to apply in fluid transfer, structural and mechanical application in industries.

BS 3059 Part 1 Gr. 320 & Part 2 Gr.360/440 Carbon Steel Tube

What is BS 3059 Part 1 Grade 320?

The BS 3059 PT 1 GR. 320 is a mild steel grade noted for its excellent chemical characteristics. Specifically, the BS 3059-1 Grade 320 Carbon Steel Seamless Tube has a relatively higher carbon concentration, lending it durability and sustainability across various service conditions. While this Carbon Steel BS 3059 PT 1 GR. 320 Tubing is not naturally as hard as steels with significantly higher carbon content, its surface hardness can be effectively boosted through a process called carburizing. Furthermore, these tubes are highly reliable and are manufactured with close dimensional tolerance.

What is BS 3059 Part 2 Grade 360 Boiler Tube?

A boiler tube is a critical component within boilers, specifically engineered to withstand demanding pressure and temperature applications. The BS 3059 GR 360 Boiler Tube is available in nominal bore sizes ranging from ½ NB to 36 NB and is capable of handling various media across harsh environments. These tubes, which can be specified with wall thicknesses between 3mm to 12mm, may be produced via either hot or cold rolling processes and are available with plain, beveled, or threaded ends.

BS 3059 Seamless Tubes Specification

Parameter Details
Standards BS 3059 Part II
Craft Cold Rolled and Cold Drawn
Outside Diameter 5–90 mm
Size 1/2” NB to 36” NB
Form Round, Hydraulic Etc
Length Min 3 Meters, Max 18 Meters, or according to customer’s requirement
Schedules SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Specialized In Large Diameter BS 3059 Pipe
Steel Grade Gr. 360
Tolerance Cold drawn pipe: ±0.1 mm
Cold rolled pipe: ±0.05 mm
Thickness 3–12 mm
Type Seamless / ERW / Welded / Fabricated
Origin European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)
End Plain End, Beveled End, Threaded
Wall Thickness 0.5–15 mm

Chemical Composition of BS 3059 Part 1 Grade 320 & BS 3059 Part 2 Grade 360

Grade Tensile Strength (MPa) Yield Strength (MPa Min) Elongation (% Min) Flatten Coefficient
360 360–500 235 24 0.1

BS 3059 Part 2 Gr. 360 Boiler Tube Mechanical Properties

Grade / Elements Carbon (C) Silicon (Si) Manganese (Mn) Phosphorus (P) Sulphur (S) Molybdenum (Mo) Nickel (Ni) Chromium (Cr) Copper (Cu) Others
BS 3059 Part 1
Grade 320
max 0.16 0.10–0.35 0.30–0.70 max 0.04 max 0.04
BS 3059 Part 2
Grade 360
≤ 0.17 0.10–0.35 0.40–0.80 ≤ 0.035 ≤ 0.035

BS 3059 Boiler Tube Equivalent

BS BS 3059 ASTM / ASME ASTM / ASME A53
BS 1387 ASTM / ASME A106
DIN DIN 1629 ASTM / ASME A179
DIN 2391 ASTM / ASME A192
DIN 2448 ASTM / ASME A210
DIN 17175 ASTM / ASME A213
DIN 17456 ASTM / ASME A249
DIN 17458 ASTM / ASME A269
JIS JIS G3444 ASTM / ASME A312
JIS G3445 ASTM / ASME A333
JIS G3456 ASTM / ASME A334
JIS G3459 ASTM / ASME A335
JIS G3461 ASTM / ASME A500
EN EN 10216-1 ASTM / ASME A519
EN 10216-2 ASTM / ASME A556

BS 3059 Boiler Tube Pressure Rating

NPS (in) Outside Diamete (in) 10 20 30 STD 40 60 Schedule XS 80 100 120 140 160 XXS
1/4 0.54       7985 7985   10798 10798          
3/8 0.675       6606 6606   9147 9147          
1/2 0.84       6358 6358   8575 8575       10908 17150
3/4 1.05       5273 5273   7187 7187       10220 14373
1 1.315       4956 4956   6670 6670       9316 13340
1 1/4 1.66       4133 4133   5638 5638       7380 11276
1 1/2 1.9       3739 3739   5158 5158       7247 10316
2 2.375       3177 3177   4498 4498       7097 8995
2 1/2 2.875       3460 3460   4704 4704       6391 9408
3 3.5       3024 3024   4200 4200       6132 8400
3 1/2 4       2769 2769   3896 3896          
4 4.5       2581 2581   3670 3670   4769   5782 7339
5 5.563       2273 2273   3303 3303   4404   5505 6606
6 6.625       2071 2071   3195 3195   4157   5318 6390
8 8.625 1420 1574 1829 1829 2307 2841 2841 3375 4085 4613 5147 4971  
10 10.75 1140 1399 1664 1664 2279 2279 2708 3277 3847 4558 5128 4558  
12 12.75 961 1268 1441 1560 2160 1922 2644 3244 3843 4324 5042 3843  
14 14 875 1092 1313 1313 1533 2079 1750 2625 3283 3829 4375 4921  
16 16 766 956 1148 1148 1531 2009 1531 2585 3157 3733 4404 4882  
18 18 681 849 1192 1021 1530 2042 1361 2553 3147 3743 4252 4848  
20 20 613 919 1225 919 1455 1989 1225 2526 3138 3675 4288 4824  
22 22 557 835 1114 835   1949 1114 2506 3063 3619 4176 4733  
24 24 510 766 1147 766 1405 1978 1021 2489 3126 3700 4210 4786  
30 30 510 817 1021 613     817            
32 32 478 766 957 574 1054                
34 34 450 721 901 540 992                
36 36 425 681 851 510 1021                
42 42   583 729 438 875                

BS 3059 Boiler Tube Size Chart

NB Size OD mm 40S mm 5S mm 10S mm S10 mm S20 mm S40 mm S60 mm XS/80S mm S80 mm S100 mm S120 mm S140 mm S160 mm XXS mm
  1/8" 10.29       1.2   1.73     2.41          
  1/4" 13.72       1.7   2.24     3.02          
  3/8" 17.15       1.7   2.31     3.2          
15 1/2" 21.34 2.8 1.7 2.1 1.7 2.1 2.77   3.73 3.73       4.78 7.47
20 3/4" 26.67 2.9 1.7 2.1 1.7 2.1 2.87   3.91 3.91       5.56 7.82
25 1" 33.4 3.4 1.7 2.8 1.7 2.8 3.38   4.55 4.55       6.35 9.09
32 11/4" 42.16 3.6 1.7 2.8 1.7 2.8 3.56   4.85 4.85       6.35 9.7
40 11/2" 48.26 3.7 1.7 2.8 1.7 2.8 3.68   5.08 5.08       7.14 10.2
50 2" 60.33 3.9 1.7 2.8 1.7 2.8 3.91   5.54 5.54       9.74 11.1
65 21/2" 73.03 5.2 2.1 3.1 2.1 3.1 5.16   7.01 7.01       9.53 14
80 3" 88.9 5.5 2.1 3.1 2.1 3.1 5.49   7.62 7.62       11.1 15.2
90 31/2" 101.6 5.7 2.1 3.1 2.1 3.1 5.74   8.08 8.08          
100 4" 114.3 6 2.1 3.1 2.1 3.1 6.02   8.56 8.56 11.1   13.5 17.1  
125 5" 141.3 6.6 2.8 3.4 2.8 3.4 6.55   9.53 9.53 12.7   15.9 19.1  
150 6" 168.3 7.1 2.8 3.4 2.8 3.4 7.11   10.97 11 14.3   18.3 22  
200 8" 219.1 8.2 2.8 3.8 2.8 3.8 8.18 10.3 12.7 12.7 15.1 19.3 20.6 23 22.2
250 10" 273.1 9.3 3.4 4.2 3.4 4.2 9.27 12.7 12.7 15.1 19.3 21.4 25.4 28.6 25.4
300 12" 323.9 9.5 4 4.6 4 4.6 10.3 14.3 12.7 17.5 21.4 25.4 28.6 33.3 25.4
350 14" 355.6 9.5 4 4.8 4 4.8 11.1 15.1 12.7 19.1 23.8 27.8 31.8 35.7  
400 16" 406.4 9.5 4.2 4.8 4.2 4.8 12.7 16.7 12.7 21.4 26.2 31 36.5 40.5  
450 18" 457.2 9.5 4.2 4.8 4.2 4.8 14.3 19.1 12.7 23.8 29.4 34.9 39.7 45.2  
500 20" 508 9.5 4.8 5.5 4.8 5.5 15.1 20.6 12.7 26.2 32.5 38.1 44.5 50  
550 22" 558.8 9.5 4.8 5.5 4.8 5.5 22.2   12.7 28.6 34.9 41.3 47.6 54  
600 24" 609.6 9.5 5.5 6.4 5.5 6.4 17.5 24.6 12.7 31 38.9 46 52.4 59.5  
650 26" 660.4 9.5     7.9   13   12.7            
700 28" 711.2 9.5     7.9   13   12.7            
750 30" 762 9.5 6.4 7.9 7.9   13   12.7            
800 32" 812.8 9.5     7.9   13 17.5 12.7            
850 34" 863.6 9.5     7.9   13 17.5 12.7            
900 36" 914.4 9.5     7.9   13 19.1 12.7            

BS 3059 Boiler Tube Weight

Size NPS Pipe O.D. Wall Thickness Pipe I.D. Weight per Foot Standard to XXHY Schedule Pipe # Section Modulus Gallon Capacity Per Linear Foot
1/2 0.84 0.109 0.622 0.85 STD 40 0.0407 0.0158
    0.147 0.546 1.09 XHY 80 0.0478 0.0122
    0.188 0.464 1.31   160 0.0528 0.0088
    0.294 0.252 1.72 XXHY   0.0577 0.0026
3/4 1.05 0.113 0.824 1.13 STD 40 0.0705 0.0277
    0.154 0.742 1.48 XHY 80 0.0853 0.0225
    0.219 0.612 1.95   160 0.1006 0.0153
    0.308 0.434 2.44 XXHY   0.1103 0.0077
1 1.315 0.133 1.049 1.68 STD 40 0.1328 0.0449
    0.179 0.957 2.17 XHY 80 0.1606 0.0374
    0.25 0.815 2.85   160 0.1904 0.0271
    0.358 0.599 3.66 XXHY   0.2136 0.0146
11/4 1.66 0.14 1.38 2.27 STD 40 0.2346 0.0777
    0.191 1.278 3 XHY 80 0.2913 0.0666
    0.25 1.16 3.77   160 0.3421 0.0549
    0.382 0.896 5.22     0.411 0.0328
11/2 1.9 0.145 1.61 2.72 STD 40 0.3262 0.1058
    0.2 1.5 3.63 XHY 80 0.4118 0.0918
    0.281 1.338 4.86   160 0.5079 0.073
    0.4 1.1 6.41     0.5977 0.0494
2 2.375 0.109 2.157 2.64   10 0.4205 0.1898
    0.154 2.067 3.66 STD 40 0.5606 0.1743
    0.218 1.939 5.03 XHY 80 0.7309 0.1534
    0.25 1.875 5.68     0.8045 0.1434
    0.281 1.813 6.29     0.8666 0.1344
    0.344 1.687 7.47   160 0.9806 0.1161
    0.436 1.503 9.04 XXHY   1.1043 0.0922
21/2 2.875 0.12 2.635 3.53   10 0.687 0.2833
    0.203 2.469 5.8 STD. 40 1.064 0.2487
    0.216 2.443 6.14     1.1169 0.2435
    0.25 2.375 7.02     1.2468 0.2301
    0.276 2.323 7.67 XHY 80 1.3386 0.2202
    0.375 2.125 10.02   160 1.6371 0.1842
    0.552 1.771 13.71 XXXHY   1.9971 0.128
3 3.5 0.12 3.26 4.34     1.0411 0.4336
    0.156 3.188 5.58     1.3122 0.4147
    0.172 3.156 6.12     1.4265 0.4064
    0.188 3.124 6.66     1.5342 0.3984
    0.216 3.068 7.58 STD. 40 1.7241 0.384
    0.25 3 8.69     1.9372 0.3672
    0.281 2.938 9.67     2.1207 0.3521
    0.3 2.9 10.26 XHY 80 2.2253 0.3431
    0.438 2.624 14.34   160 2.8774 0.2811
    0.6 2.3 18.6 XXHY   3.4243 0.2158
31/2 4 0.12 3.76 4.98   10 1.3776 0.5768
    0.226 3.548 9.12 STD. 140 2.3939 0.5136
    0.25 3.5 10.02     2.6001 0.4998
    0.281 3.438 11.17     2.8562 0.4821
    0.318 3.364 12.52 XHY 80 3.14 0.4617
    0.636 2..728 22.87 XXHY   4.8795 0.3085
4 4.5 0.12 4.26 5.62   10 1.7612 0.7404
    0.156 4.188 7.24     2.2354 0.7156
    0.188 4.124 8.67     2.6296 0.6942
    0.203 4.094 9.32     2.8173 0.6838
    0.219 4.062 10.02     3.0184 0.6725
    0.237 4.026 10.8 STD. 40 3.2145 0.6613
    0.25 4 11.36     3.3611 0.6528
    0.281 3.938 12.67   60 3.7021 0.6326
    0.312 3.876 13.97     4.0273 0.6126
    0.337 3.826 15 XHY 80 4.2713 0.5972
    0.438 3.624 19.02   120 5.179 0.5361
    0.531 3.438 22.53   160 5.8997 0.4822
    0.674 3.152 27.57 XXHY   6.7927 0.4054
5 5.563 0.188 5.187 10.8     4.1161 1.0979
    0.219 5.125 12.51     4.7279 1.0716
    0.258 5.047 14.63 STD. 40 5.45 1.0391
    0.281 5.001 15.87     5.8644 1.0204
    0.312 4.939 17.51     6.4074 0.99647
    0.344 4.875 19.19     6.9358 0.9696
    0.375 4.813 20.8 XHY 80 7.43 0.9449
    0.5 4.563 27.06   120 9.2534 0.8495
    0.625 4.313 32.99   160 10.7976 0.759
    0.75 4.063 38.59 XXHY   12.0954 0.6734
6 6.625 0.109 6.407 7.59   5 3.5769 1.6748
    0.134 6.357 9.3   10 4.3475 1.6488
    0.156 6.313 10.79     5.0107 1.626
    0.188 6.249 12.94     5.9351 1.5937
    0.203 6.219 13.94     6.3804 1.578
    0.219 6.187 15     6.8261 1.562
    0.25 6.125 17.04     7.6905 1.5306
    0.28 6.065 18.99 STD. 40 8.4958 1.5008
    0.312 6.001 21.06     9.3416 1.4688
    0.344 5.937 23.1     10.111 1.4391
    0.375 5.875 25.05     10.893 1.4082
    0.432 5.761 28.6 XHY 80 12.224 1.3541
    0.5 5.625 32.74     13.711 1.2909
    0.562 5.501 36.43   120 14.9806 1.2346
    0.625 5.375 40.09     16.1821 1.1787
    0.719 5.187 45.39   160 17.8243 1.0977
    0.864 4.897 53.21 XXHY   20.025 0.9784
    1 4.625 60.13     21.7719 0.8727
    1.125 4.375 66.14     23.1237 0.7809

Applications of BS 3059 Carbon Steel Seamless Tubes

  • Steam Boilers
  • Fossil Fuel Plants
  • Heat Exchangers
  • Electric Power Plants
  • Cogeneration Facilities
  • Air Preheater Unit
  • Waste Heat Plants
  • Power Generation
  • Economiser
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