Description
| 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 |
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.
Specification
| 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 | – |
Standard
| 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 |
Process
