Produse – Țevi pentru cazane și temperaturi înalte

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

According EN 10216-2 or ASME B36.10M in dimensional range corresponding to the workshop CPE (Tab.1 and Tab.2) or ASSEL (Tab.3) or Cold rolling and drawing (Tab.4)

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%

 

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%

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

Random lengths or fixed lengths in length range correspond-ing to the -workshop CPE (Tab.1 and Tab.2) or ASSEL (Tab.3) or Cold rolling and drawing (Tab.4).

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.