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Boiler Tubes
Boiler Tubes, Bestar Steel Co.,Ltd
Seamless boiler pipe, Heat exchanger tubes, Tubes for boiler and high temperature

Boiler Tubes

Product:

Seamless boiler pipe, Heat exchanger tubes, Tubes for boiler and high temperature

Application:

Used for superheated pipelines, steam pipeline, boiling water tube

Size:

OD: 13.72-914.4mm


WT: 1.65-22mm


LENGTH: 0.5mtr-20mtr

Pipe Standard:

ASTM A192   ASTM A179   ASTM A556   ASTM A210


EN10216/BS3059


JIS G3454/G3456/G3461

Marking:
According to standard or per customer request
Mill test report:
Mill test reports are issued to customer requirements. Usually they comply with DIN 50049, EN 10204
  • Description
  • Specification
  • Standard
  • Process
  • Packing

What are Boiler tubes?

Boiler tubes are seamless tubes and are made of either carbon steel or alloy steel. They are widely used in steam boilers, for power generation, in fossil fuel plants, industrial processing plants, electric power plants, etc. 

Boiler tubes can either be medium-pressure boiler pipes or high-pressure boiler pipes. Boiler tubes are often manufactured in seamless procedures.

Boiler pipes refers to steel that is open at both ends and has a hollow section. Boiler and heat exchange tubes must be temperature and pressure resistant. For specific applications, they even need to increase or reduce heat transmission.


Standard Boiler Pipes & Tubes Standard & Grades

A/SA 179 low carbon steel;

A/SA 192  Carbon Steel;

A/SA 210  Grades A1, C;

A/SA 556 Grades B2, C2;

BS3059

JIS G3454  Grades STPG 370, STPG 410

JIS G3456  Grades STPT 370, STPT 410, STPT 480

JIS G3461  Grades STB 340 , STB410, STB510

EN 10216-2  Grades P195GH, P235GH, P265GH, 16Mo3, 10CrMo5-5, 13CrMo4-5, 10CrMo9-10, X10CrMoVNb9-1



Boiler tubing is used in these industries:

Steam Boilers

Fossil Fuel Plants

Heat Exchangers

Electric Power Plants

Cogeneration Facilities

Air Preheater Unit

Waste Heat Plants

Power Generation

Economiser etc


How to Choose Good Quality Boiler Tubes?
While choosing boiler tubes, look for the following to pick out the right and good quality tubes:

1. Look at the cross-section of the tube. A good quality seamless tube will have a smooth cross-section and will be devoid of bumps and irregularities.

2. Check the density of the pipe to understand the percentage of impurities in the pipe. If the pipe shows low density, steer clear!

3. Make sure you check the trademark. Reputed manufacturers always put their trademark on their seamless tubes.

4. Check the surface of the boiler tube. A good quality boiler tube will have a smooth surface. If you find the surface to be rough and uneven, you can be sure that the quality is not up to the mark.


Tolerances

Standard Outside Diameter Wall Thickness Weight
ASTM A 106 NF A 49-211

OD≤48.3; ±0,40mm

48.3<OD≤114.3; ±0.8mm

114.3<OD≤219.1; +1.6/-0.8mm

OD>219.1; +2.4/-0.8mm

+12.5% +10/-3.5% for any length of pipe
EN 10216-2 hot rolled ±1.0%  or ±0.5mm (which is higher) ±12.5% or ±0.4mm (which is higher)
DIN 17175 hot rolled

OD<=100 ± 0.75%

(minimum±0.5mm)

100<OD<=320    ±0.9%

OD <=130;  WT≤ 2Sn; +15/-10%

OD <=130; 2Sn<WT≤4Sn; +12.5/-10%

OD <=130; WT>4Sn; ±9%

130<OD<=320; WT ≤0.05OD; +17.5/-12.5%

130<OD<=320; 0.05OD <WT≤0.11OD; ±12.5%

130<OD<=320; WT>0.11OD; ±10%

Sn- Nominal wall thickness according to DIN 2448

+10/-8% for each tube

±7.5% for a lots over 10t

ASTM A210 hot rolled

OD<=101.6+0.4/-0.8mm

101.6<OD<=190.5+0.4/-1.2mm

190.50<OD<=228.6+0.4/-1.6mm

OD<=101.6 and WT<=2.4; +40%/0

OD<=101.6 and 2.4<WT<=3.8; +35%/0

OD<=101.6 and 3.8 <WT<=4.6; +33%/0

OD<=101.6 and WT>4.6; +28%/0

OD>101.6 and 2.4<WT<=3.8; +35%/0

OD>101.6 and 3.8 <WT<=4.6; +33%/0  OD>101.6 and WT>4.6; +28%/0

+16%/0

ASTM A213

hot rolled

OD≤100mm: +0.4mm / -0.8 mm

100<OD ≤ 200mm: +0.4 /- 0.8 mm

200<OD ≤ 225mm: +0.4mm /-1.6 mm

Average wall thickness:

10.3<WT≤73mm: +20%/-12.5%

WT<73 mm & (WT/OD)≤5%: +22.5%/-12.5%

WT<73 mm & (WT/OD)>5%: +15%/-12.5%

 

Minim wall thickness:

WT ≤ 2.4 mm (only for OD ≤ 114.3 mm): + 40 % / -0%

2.4<WT≤3.8 mm: +35 %/-0%

3.8<WT≤4.6 mm: +33% / -0%

WT>4.6 mm: +28% / -0%

 

ASTM A213

Cold finished

OD ≤25: +0.10 mm/-0.11 mm

25<OD ≤40mm: ±0.15 mm

40<OD <50mm: ±0.20 mm

50≤OD < 65mm: ±0.25 mm

65≤OD < 75 mm: ±0.30 mm

75≤OD ≤100 mm: ±0.38 mm

100<OD ≤200mm:+0.38/-0.64 mm

200<OD ≤225mm:+0.38 /-1.14 mm

 

Average wall thickness: ±10%

 

Minim wall thickness:

For OD ≤38.1mm => WT = +20% / -0

For OD >38.1mm => WT= +22% / -0

ASTM A335

hot rolled

For pipe ordered to NPS [DN] or outside diameter:

10.3<OD≤48.3mm: ±0.4 mm

48.3<OD ≤114.3mm: ± 0.8 mm

114.3<OD≤219.1 mm:+1.59 /-0.79mm

219.1<OD≤323.9mm:+2.38 mm /-0.79mm

For pipe ordered to inside diameter: ±1%

10.3<WT≤73mm: +20%/-12.5%

WT<73 mm & (WT/OD)≤5%: +22.5%/-12.5%

WT<73 mm & (WT/OD)>5%: +15%/-12.5%

 

 

DIN 17175 cold rolled

OD<=120±

0.6%(minimum±0.25mm)

OD>120±0.75%

 

OD <=130; WT≤ 2Sn; +15/-10%

OD <=130; 2Sn<WT≤4Sn; +12.5/-10%

OD <=130;  WT>4Sn; ±9%

130<OD<=320; WT ≤0.05OD; +17.5/-12.5%

130<OD<=320; 0.05OD <WT≤0.11OD; ±12.5%

130<OD<=320; WT>0.11OD; ±10%

Sn – Nominal wall thickness according to DIN 2448

+10/-8% for each tube

±7.5% for a lots over 10t

EN 10216-2 cold rolled ±0.5%  or ±0.3mm (which is higher) ±10% or ±0.2 mm (which is higher)

ASTM A179 and ASTM

A210

cold rolled

OD<25.4; ±0.10

25.4<=OD<=38.1; ±0.15

38.1<OD<50.8; ±0.20

50.8>=OD<63.5; ±0.25

63.5>=OD<76.2; ±0.30

OD<=38.1; +20% OD>38.1; +22% OD<=38.1; +12% OD>38; +13%

Chemical Composition (%)

Steel Group C Si Mn P max S max Cr Mo Ni Sn
Grade A, TU E275 max 0.25 min 0.10 0.27÷0.93 0.035 0.035
Grade B max 0.30 min 0.10 0.29÷1.06 0.035 0.035
St35.8, TU E220 max 0.17 0.10÷0.35 0.40÷0.80 0.040 0.040
St45.8, TU E250 max 0.21 0.10÷0.35 0.40÷1.20 0.040 0.040
P195GH max.0.13 max.0.35 max.0.70 0.025 0.020 max 0.30 max 0.08 max 0.30
P235GH max.0.16 max.0.35 max.1.20 0.025 0.020 max 0.30 max 0.08 max 0.30
P265GH max.0.20 max0.40 max.1.40 0.025 0.020 max 0.30 max 0.08 max 0.30
16Mo3 0.12÷0.20 max0.35 0.40÷0.90 0.025 0.020 max 0.30 0.25÷0.35 max.0.30
13CrMo4-5 0.10÷0.17 max0.35 0.40÷0.70 0.025 0.020 0.70 ÷1.15 0.40÷0.60 max.0.30
10CrMo9-10 0.08-0.14 max 0.50 0.30÷0.70 0.020 0.010 2.0 ÷2.50 0.90÷1.10 max.0.30
ASTM A179 0.06÷0.18 0.27÷0.63 0.035 0.035
Grade A-1 max0.27 min. 0.10 max. 0.93 0.035 0.035
T11 0.05-0.15 0.30-0.60 0.30-0.60 0.025 0.025 1.00-1.50 0.44-0.65
T22 0.05-0.15 0.30-0.60 0.30-0.60 0.025 0.025 1.90-2.60 0.87-1.13
P5 max. 0.15 max. 0.50 0.30-0.60 max. 0.025 0.025 4.00-6.00 0.45-0.65
P11 0.05-0.15 0.50-1.00 0.30-0.60 max. 0.025 max. 0.025 1.00-1.50 0.44-0.65
P22 0.05-0.15 max. 0.50 0.30-0.60 max. 0.025 max. 0.025 1.90-2.60 0.87-1.13

Mechanical Properties

Steel Group Yield Strength, min. Tensile Strength Elongation Impact
N/mm² N/mm² min. (%) J (°C)
Grade A, TU E275 205 min. 330 Calculation acc. to
Grade B 240 min 415 the wall thickness
St35.8, TU E220 235 360÷480 25
St45.8, TU E250 255 410÷530 21
P195GH 195 320÷440 27 28 -10
P235GH 225 360÷500 25 28 -10
P265GH 255 410÷570 23 28 -10
16Mo3 270 450÷600 22 40 20
13CrMo4-5 290 440÷590 22 40 20
10CrMo9-10 280 480÷630 22 40 20
ASTM A179 180 325 36 HRB = max 72
Grade A-1 255 415 30 HRB = max 79
T11 205 415 30 85HRB/250HBW/170HV
T22 205 415 30 85HRB/250HBW/170HV
P5 205 415 30
P11 205 415 30
P22 205 415 30

A179

Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes

A192

Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service

A210

Standard Specification for Seamless Medium-Carbon Steel Boiler and Super heater Tubes

A556

Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes

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Seamless boiler pipe, Heat exchanger tubes, Tubes for boiler and high temperature
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