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 Seamless Steel Pipe for Low and Medium Pressure Boiler
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● Standards:GB3087-1999, ISO 9329-1, ASTM A106, DIN 17175,JIS G 345, BS 3059
● Function ：
Mainly applied in manufacturing low-vapor-pressure （ P≦6Mpa ） superheating steam tube, boiling water tube, big and small fire tube and arch tube of low and medium pressure boiler, locomotive boiler, ordinary industrial boiler and commercial boiler.
● Spec.:
OD |
Wall Thickness |
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Unit(mm) |
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2.0 |
2.5 |
3.0 |
3.5 |
4.0 |
4.5 |
5.0 |
5.5 |
6.0 |
7.0-8.0 |
9.0-10.0 |
11.0-12.0 |
Φ17-Φ18 |
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Φ19 |
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Φ20-Φ21 |
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Φ22 |
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Φ25 |
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Φ27-Φ28 |
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Φ32 |
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Φ38 |
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Φ42-Φ45 |
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Φ48-Φ51 |
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Φ57 |
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Φ60-Φ73 |
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Φ76-Φ89 |
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Φ102 |
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Φ108 |
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● Tolerance of size Tolerance of size
Permissible tolerance of wall thickness:
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Standard |
Outside diameter |
Wall thickness |
Permissible tolerance of wall thickness |
DIN17175 |
≤130 |
S≤2·Sn |
+15%,-10% |
2·Sn<S≤4·Sn |
+12.5%,-10% |
S>4·Sn |
±9% |
>130 |
S≤0.05da |
+15%，-10% |
0.05da<S≤0.11da |
±12.5% |
S>0.11da |
±10% |
GB 3087 |
-- |
3-20 |
+12.5%,-12.5% |
>20 |
±10% |
ASME SA450 |
-- |
2.4-3.8 |
+35%,-0% |
>3.8-4.6 |
+35%,-0% |
>4.6 |
+23%,-0% |
ASME SA530 |
-- |
-- |
±12.5% |
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● Permissible tolerance of outside diameter |
Standard |
Outside diameter |
Permissible tolerance of outside diameter |
DIN17175 |
≤100 |
±0.75% (min=0.5mm) |
>100 |
±0.90% |
GB3087 |
≤159 |
+1.25% -1.0% |
ASME SA450 |
≤101.6 |
+0.4 -0.8 (mm) |
>101.6-190.5 |
+0.4 -1.2 (mm) |
ASME SA530 |
≤48.3 |
+0.4 -0.8 (mm) |
>48.3-114.3 |
±0.8 (mm) |
>114.3 |
+1.6 -0.8 (mm) |
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● Mechanical Properties: |
Steel grade
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Tensile strength
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Yield point of following steel tube is no less than |
Extensibility
δ5% no less than
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ballistic work (vertical)
No less than
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Hardness no more than
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Standard
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Rockwell hardness |
Brinell hardness |
Wall thickness
＜5.1mm |
Wall thickness
≥5.1mm |
＜15mm |
≥15mm |
St35.8 |
360-480 |
235 |
225 |
25 |
- |
- |
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DIN17175 |
Sr45.8 |
410-530 |
255 |
245 |
21 |
- |
- |
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15Mo3 |
450-600 |
270 |
22 |
- |
- |
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13CrMo44 |
440-590 |
290 |
22 |
- |
- |
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10CrMo910 |
450-600 |
280 |
20 |
- |
- |
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14MoV63 |
460-610 |
320 |
20 |
55 |
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- |
12Cr1MoV |
470-640 |
255 |
245 |
21 |
41 |
- |
- |
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＜15mm |
≥15mm |
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SA192 |
≥325 |
180 |
35 |
- |
77HRB |
137HB |
ASMESA192 |
SA106-B |
≥415 |
240 |
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- |
- |
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ASMESA106 |
SA106-C |
≥485 |
275 |
- |
- |
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SA556-C2 |
≥480 |
280 |
- |
- |
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ASMESA556 |
SA210-A1 |
≥415 |
255 |
- |
79HRB（143HB） |
ASMESA210 |
SA210-C |
≥485 |
275 |
- |
89HRB(179HB) |
SA209-T1a |
≥415 |
220 |
- |
81HRB |
153HB |
ASMESA209 |
SA213-T12 |
≥415 |
205 |
- |
163HB(85HRB) |
ASMESA213 |
SA213-T22 |
≥415 |
205 |
- |
163HB(85HRB) |
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● Composition(%): |
Standard |
Trademark
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C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
V |
GB 3087 |
10 |
0.07-0.14 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
≤0.15 |
- |
- |
20 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
≤0.25 |
- |
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DIN 17175 |
St35.8 |
≤0.17 |
0.10-0.35 |
0.40-0.80 |
0.030 |
0.030 |
- |
- |
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St45.8 |
≤0.21 |
0.10-0.35 |
0.40-1.20 |
0.030 |
0.030 |
- |
- |
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15Mo3 |
0.12-0.20 |
0.10-0.35 |
0.40-0.80 |
0.030 |
0.030 |
- |
0.25-0.35 |
- |
13CrMo44 |
0.10-0.18 |
0.10-0.35 |
0.40-0.70 |
0.030 |
0.030 |
0.70-1.10 |
0.45-0.65 |
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10CrMo910 |
0.08-0.15 |
≤0.50 |
0.40-0.70 |
0.030 |
0.030 |
2.00-2.50 |
0.90-1.20 |
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14MoV63 |
0.10-0.18 |
0.10-0.35 |
0.40-0.70 |
0.030 |
0.030 |
0.30-0.60 |
0.50-0.70 |
0.22-0.32 |
12Cr1MoV |
0.08-0.15 |
0.17-0.37 |
0.40-0.70 |
0.030 |
0.030 |
0.90-1.20 |
0.25-0.35 |
0.15-0.30 |
ASME |
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0.08-0.15 |
0.45-0.75 |
0.45-0.65 |
0.030 |
0.030 |
1.60-2.10 |
0.50-0.65 |
0.28-0.42 |
ASME SA192 |
SA192 |
0.06-0.18 |
≤0.25 |
0.27-0.63 |
0.035 |
0.035 |
- |
- |
- |
ASME SA106 |
SA106-B |
≤0.30 |
≥0.10 |
0.29-1.06 |
0.035 |
0.035 |
- |
- |
- |
SA106-C |
≤0.35 |
≥0.10 |
0.29-1.06 |
0.035 |
0.035 |
- |
- |
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ASME SA556 |
SA556-C2 |
≤0.30 |
≥0.10 |
0.29-1.06 |
0.035 |
0.035 |
- |
- |
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ASME SA209 |
SA209-T1a |
0.15-0.25 |
0.10-0.50 |
0.30-0.80 |
0.025 |
0.025 |
- |
0.44-0.65 |
- |
ASME SA210 |
SA210-A1 |
≤0.27 |
≥0.10 |
≤0.93 |
0.035 |
0.035 |
- |
- |
- |
SA210-C2 |
≤0.35 |
≥0.10 |
0.29-1.06 |
0.035 |
0.035 |
- |
- |
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ASME SA213 |
SA213-T12 |
0.05-0.15 |
≤0.50 |
0.30-0.61 |
0.025 |
0.025 |
0.80-1.25 |
0.44-0.65 |
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SA213-T22 |
0.05-0.15 |
≤0.50 |
0.30-0.60 |
0.025 |
0.025 |
1.90-2.60 |
0.87-1.13 |
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 Product |
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Structural Steel Pipe
