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Help CenterSeamless Steel Tubes in Small Calibers for High(low and Medium) Pressure Boilers and Petro Chemical Industry
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Seamless steel tubes in small calibers for high(low and medium) Pressure boilers and petro chemical industry
Main Steel Pipe Model
10, 20, 20G, 20MnG, 25MnG, ST45.8/Ⅲ, 15Mo3 etc.
Standard Size
GB3087 ,GB5310,ASME SA210 ,DIN17175
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% |
|
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 450-650C1
Mechanical properties:
Standard codes |
steel |
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 |
/ |
|
ASME SA210 |
SA210A-1 |
≥415 |
≥255 |
≥30 |
≤143HB |
SA210C |
≥485 |
≥275 |
≥30 |
≤179HB |
|
DIN17175 |
ST45.8/Ⅲ |
410~530 |
≥255 |
≥21 |
/ |
15Mo3 |
450~600 |
≥270 |
≥22 |
/ |
Chemical composition:
Standard codes |
steel |
Chemical compositions (%) |
||||||
C |
Si |
Mn |
P |
S |
Cr |
Mo |
||
GB3087 |
10 |
0.07~0.13 |
0.17~0.37
|
0.38~0.65 |
≤0.030
|
≤0.030
|
|
|
20 |
/ |
|||||||
GB5310 |
20G |
0.17~0.24 |
0.35~0.65 |
|
||||
20MnG |
0.17~0.24 |
0.70~1.00 |
|
|||||
25MnG |
0.18~0.24 |
0.80~1.10 |
|
|||||
15CrMo |
0.12~0.18 |
0.40~0.70 |
0.80~1.10 |
0.40~0.55 |
||||
ASME SA210 |
SA210A-1 |
0.13~0.19 |
≥0.1 |
0.45~0.65 |
≤0.030 |
≤0.030 |
||
SA210C |
0.18~0.24 |
0.80~1.10 |
||||||
DIN 17175 |
ST45.8/Ⅲ |
≤0.21 |
0.10~0.35 |
0.40~1.20 |
≤0.040 |
≤0.040 |
||
15Mo3 |
0.12~0.20 |
0.40~0.80 |
≤0.035 |
≤0.035 |
0.25~0.35 |
|||
Manufacturer |
Hebei Province Gold Mysterious Pipe Co.,Ltd |
|
Product |
seamless steel tube |
|
Process |
Seamless, Cold drawn |
|
|
size |
Outer Diameter |
25.8,31.8,38,50.8mmetv |
Wall Thickness |
1.6-3.5mm |
|
Length |
max 12m |
|
Contact |
Elina Wong 86-0312-6721288 skype.....>jinaoguanye3 |
|
1. How long will it take to produce an order?
It is within 30days for the purchasing and production time with container order and 10days for the sample.
2. What is your minimum order?
Usually 5 ton for each size, please contact us when you are trying to purchase less than container load
3. What form of quotation do you offer?
FOB Tianjin, CIF and CNF Your destination
4. What is your payment term?
Payment is 30% deposit, 70% before shipment .
5. Does the sample for free or not?
The samples are free if they are common sizes, You need to pay for the freight .
6. How do you guarantee the quality of the products?
All of our procedures are strictly operated under the ISO 9001:2008, and there are as many as 6 times of test during the production of each product to ensure the quality.
7. How do you to package the product?
Wrapped with polywoven bags, we use steel belt to pack the outside, polywooden cases or wooden boxes for thin wall thickness can be offered if required
8.How about the Third Party Inspection ?
We have been working with DNV,TUV,SGS,BV,CO,Lloyd's etc;
Send Inquiry to This Supplier
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