SEAMLESS TUBES FOR BOILER AND HIGH TEMPERATURE SERVICE
1. Standards
DIN 17175, EN 10216-2, ASTM A 106, ASTM A179, NF A 49-211, ASTM A210, ASTM A213, ASTM A335;
2. Used for
Construction for: boiler, pipe lines, pressure vessels, equipment for high temperature and pressure, equipment for heat-exchanger and condenser.
3. Dimensions
4. 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%
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– |
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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 |
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|
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%
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| 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% |
5. 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 |
6. 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 | – | |
7. Lengths
8. Protection
- Unprotected;
- External varnished with black or clear lacquer;
- If required, the tubes can be delivered with plastic caps at both ends.
9. Marking
- According to standard or per customer request.
10. Delivery
Bundles up to:
- 2000 kg (4400 lbs) – cold drawn tubes;
- 4000 kg (8800 lbs) – hot rolled tubes.
Quantity tolerances: ±5% per size or / and per total.
The bundles will have one tag applied at each end, marked according to standard or at customer’s request.
11. Mill test report
- Mill test reports are issued to customer requirements. Usually they comply with DIN 50049, EN 10204.
12. Quality certified
- TUV-PED, AD.