Small Calibers Seamless steel tubes for high(low and medium) pressure boilers and petrochemical industry
Standards:
GB3087 Chinese national standard
GB5310 Chinese national standard
ASME SA210 Boiler and pressure vessel code of ASME
ASME SA213 Boiler and pressure vessel code of ASME
DINl7175 Deutsches industrial standard~
Application:
Used as the pipes on the heated side of low and medium pressure boilers(normally with operating pressure not higher than 5.88Mpa and
operating temperature below 450 oc);as the pipes on the heated sides of high·pressure boilers,economizers,overheaters,reheaters and pipes
for petrochemical industry(with the operating pressure above 9.8Mpa and operating temperature ranging between 450~C~650~C1
Specifications of ma}or steel:
10,20,20G,20MnG,25MnG,15CrMoG,12Cr2MoG,12Cr1MoVG,12Cr2MoWVTiB,10Cr9Mo1VNb,SA210A1,SA210C,SA213 T11,SA213 T12,SA213 T22,SA213 T23,SA213 T91,SA213 T92,ST45.8/III,15Mo3,13CrMo44,10CrMo910etc.
Diamensional tolerances:
| Types of steel tubes |
Outer diameters |
Wall thickness |
| Cold-rolled tubes |
Tube sizes(mm) |
Tolerances(mm) |
Tube sizes (mm) |
Tolerances(mm) |
| >30~50 |
±0.3 |
>3~20 |
±10% |
Mechanical properties:
| Standard codes |
Models of steel tubes |
Tensite strength(MPa) |
Yield strength(MPa) |
Elongation(%) |
Hardness |
| GB3087 |
10 |
335~475 |
≥195 |
≥24 |
/ |
| 20 |
410~550 |
≥245 |
≥20 |
/ |
| GB5310 |
20G |
410~550 |
≥245 |
≥24 |
/ |
| 20MnG |
≥415 |
≥240 |
≥22 |
/ |
| 25MnG |
≥485 |
≥275 |
≥20 |
/ |
| 15CrMoG |
440~640 |
≥235 |
≥21 |
/ |
| 12Cr2MoG |
450~600 |
≥280 |
≥20 |
/ |
| 12Cr1MoVG |
470~640 |
≥255 |
≥21 |
/ |
| 12Cr2MoWVTiB |
540~735 |
≥345 |
≥18 |
/ |
| 10Cr9Mo1VNb |
≥585 |
≥415 |
≥20 |
/ |
| ASME SA210 |
SA210A-1 |
≥415 |
≥255 |
≥30 |
≤143HB |
| SA210C |
≥485 |
≥275 |
≥30 |
≤179HB |
| ASME SA213 |
SA213 T11 |
≥415 |
≥205 |
≥30 |
≤163HB |
| SA213 T12 |
≥415 |
≥220 |
≥30 |
≤163HB |
| SA213 T22 |
≥415 |
≥205 |
≥30 |
≤163HB |
| SA213 T23 |
≥510 |
≥400 |
≥20 |
≤220HB |
| SA213 T91 |
≥585 |
≥415 |
≥20 |
≤250HB |
| SA213 T92 |
≥620 |
≥440 |
≥20 |
≤250HB |
| DIN17175 |
ST45.8/III |
410~530 |
≥255 |
≥21 |
/ |
| 15Mo3 |
450~600 |
≥270 |
≥22 |
/ |
| 13CrMo44 |
440~590 |
≥290 |
≥22 |
/ |
| 10CrMo910 |
480~630 |
≥280 |
≥20 |
/ |
Chemical composition:
| Standard codes |
Models of steel tubes |
Chemical compositions(%) |
| C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
V |
Al |
W |
Ti |
Nb |
N |
| GB3087 |
10 |
0.07~0.13 |
0.17~0.37 |
0.38~0.65 |
≤0.030 |
≤0.030 |
0.3~0.65 |
/ |
≤0.25 |
≤0.30 |
/ |
/ |
|
|
|
|
| 20 |
0.17~0.23 |
0.17~0.37 |
0.38~0.65 |
≤0.030 |
≤0.030 |
0.3~0.65 |
/ |
≤0.25 |
≤0.30 |
/ |
/ |
|
|
|
|
| GB5310 |
20G |
0.17~0.24 |
0.17~0.37 |
0.35~0.65 |
≤0.030 |
≤0.030 |
≤0.25 |
≤0.15 |
≤0.20 |
≤0.25 |
≤0.08 |
|
|
|
|
|
| 20MnG |
0.17~0.24 |
0.17~0.37 |
0.70~1.00 |
≤0.030 |
≤0.030 |
≤0.25 |
≤0.15 |
≤0.20 |
≤0.25 |
≤0.08 |
|
|
|
|
|
| 25MnG |
0.18~0.24 |
0.17~0.37 |
0.80~1.10 |
≤0.030 |
≤0.030 |
≤0.25 |
≤0.15 |
≤0.20 |
≤0.25 |
≤0.08 |
|
|
|
|
|
| 15CrMo |
0.12~0.18 |
0.17~0.37 |
0.40~0.70 |
≤0.030 |
≤0.030 |
0.80~1.10 |
0.40~0.55 |
≤0.20 |
≤0.30 |
|
|
|
|
|
|
| 12Cr2MoG |
0.08~0.15 |
≤0.50 |
0.40~0.70 |
≤0.030 |
≤0.030 |
2.00~2.50 |
0.90~1.20 |
≤0.20 |
≤0.30 |
|
|
|
|
|
|
| 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 |
≤0.20 |
≤0.30 |
0.15~0.30 |
|
|
|
|
|
| 12Cr2MoWVTiB |
0.08~0.15 |
0.45~0.75 |
0.45~0.65 |
≤0.030 |
≤0.030 |
1.60~2.10 |
0.50~0.65 |
≤0.20 |
≤0.30 |
0.28~0.42 |
|
0.30~0.55 |
0.08~0.15 |
B 0.002~0.008 |
|
| 10Cr9Mo1VNb |
0.08~0.12 |
0.20~0.50 |
0.30~0.60 |
≤0.020 |
≤0.010 |
8.00~9.50 |
0.85~1.05 |
≤0.20 |
≤0.40 |
0.18~0.25 |
≤0.015 |
|
|
0.06~0.10 |
0.03~0.07 |
| ASME SA210 |
SA210A-1 |
0.13~0.19 |
≥0.1 |
0.45~0.65 |
≤0.030 |
≤0.030 |
|
|
|
|
|
|
|
|
|
|
| SA210C |
0.18~0.24 |
≥0.1 |
0.80~1.10 |
≤0.030 |
≤0.030 |
|
|
|
|
|
|
|
|
|
|
| ASME SA213 |
SA213 T11 |
0.05~0.15 |
0.50~1.0 |
0.30~0.60 |
≤0.030 |
≤0.030 |
1.00~1.50 |
0.50~1.00 |
|
|
|
|
|
|
|
|
| SA213 T12 |
0.05~0.15 |
≤0.50 |
0.30~0.61 |
≤0.030 |
≤0.030 |
0.80~1.25 |
0.44~0.65 |
|
|
|
|
|
|
|
|
| SA213 T22 |
0.05~0.15 |
≤0.50 |
0.30~0.60 |
≤0.030 |
≤0.010 |
1.90~2.60 |
0.87~1.13 |
|
|
|
|
|
|
|
|
| SA213 T23 |
0.04~0.10 |
≤0.50 |
0.10~0.60 |
≤0.030 |
≤0.030 |
1.90~2.60 |
0.05~0.30 |
|
|
|
≤0.030 |
1.45~1.75 |
B0.0005~0.006 |
0.02~0.08 |
≤0.040 |
| SA213 T91 |
0.08~0.12 |
0.20~0.50 |
0.30~0.60 |
≤0.020 |
≤0.010 |
8.00~9.50 |
0.85~1.05 |
|
≤0.40 |
0.18~0.25 |
≤0.015 |
|
|
0.06~0.10 |
0.03~0.07 |
| SA213 T92 |
0.07~0.13 |
≤0.50 |
0.30~0.60 |
≤0.020 |
≤0.010 |
8.50~9.50 |
0.30~0.60 |
|
≤0.40 |
0.15~0.25 |
≤0.015 |
1.50~2.00 |
B 0.001~0.006 |
0.04~0.09 |
0.03~0.07 |
| DIN 17175 |
ST45.8/III |
≤0.21 |
0.10~0.35 |
0.40~1.20 |
≤0.040 |
≤0.040 |
|
|
|
|
|
|
|
|
|
|
| 15Mo3 |
0.12~0.20 |
0.10~0.35 |
0.40~0.80 |
≤0.035 |
≤0.035 |
|
0.25~0.35 |
|
|
|
|
|
|
|
|
| 13CrMo44 |
0.10~0.18 |
0.10~0.35 |
0.40~0.70 |
≤0.035 |
≤0.035 |
0.70~1.10 |
0.45~0.65 |
|
|
|
|
|
|
|
|
| 10CrMo910 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
