20 # Grade 20 Hot Rolled 2B Petrochemical Seamless Steel Pipe
20 #(Grade 20) seamless steel pipe
product introduction
20 # seamless steel pipe is widely used in petrochemical and other industries for its excellent performance and suitable price. 20 #. There are national standards such as seamless steel tubes for fluid transportation (GB / t8163-2008), seamless steel tubes for low and medium pressure boilers (gb3087-2008), seamless steel tubes for petroleum cracking (gb9948-2013) and seamless steel tubes for high pressure fertilizer equipment (gb6479-2013).
There are great differences in price and effect of 20 # seamless steel pipes of different standards. At present, the price of 20 # seamless steel pipes manufactured according to GB 6479-2013 is about 1000 yuan / ton higher than that manufactured according to GB / T 8163-2008.
standards for 20 # seamless steel pipes
(1) GB / t8163-2008 seamless steel pipe for fluid transportation
(2) gb3087-2008 seamless steel tubes for low and medium pressure boilers
(3) seamless steel tubes for petroleum cracking (GB / T 9948-2013)
(4) seamless pipe for high pressure fertilizer equipment (GB / T 6479-2013)
(5) GB / T 5310-2017 seamless steel tubes for high pressure boilers (in the standard, the steel number is 20g; G refers to boiler steel tubes)
20 # chemical composition
Chemical Composition of 20 # Seamless Steel Pipe
| Standard | Chemical composition | |||||||||
| C | Si | Mn | Cr | Mo | Ni | Cu | V | P | S | |
| ≤ | ||||||||||
| GB/T8163 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.25 | -- | 0.30 | 0.25 | -- | 0.035 | 0.035 |
| GB/T 9948 | 0.15 | 0.25 | 0.20 | 0.08 | 0.025 | 0.015 | ||||
| GB/T 6479 | ||||||||||
The content of main elements (such as C, Si, Mn) in the chemical composition of 20 × seamless steel pipe in each material standard is the same. The content of residual elements (such as Ni, CI, Cu, Mo, V) in steel in gb9948-2013 and GB 6479-2013 are the same, but there are slight differences between GB / T 8163-2008 and the above two standards. The main difference of chemical composition lies in the content of P and s.
mechanical properties (mechanical properties)
| Standard | Mechanical Properties | |||||||
| Tensile strength/MPa | Yield strength/MPa | Elongation | KV2/J | |||||
| S≤16mm | 16-30mm | ＞30mm | Portrait | Transverse | Portrait | Transverse | ||
| ≥ | Test temperature/℃ 0℃ | |||||||
| GB/T8163 | 410-530 | 245 | 235 | 225 | 20 | --- | ||
| GB/T 9948 | 410-550 | 245 | 24 | 22 | ≥40 | ≥27 | ||
| GB/T 6479 | 410-550 | 245 | 16-40mm | ＞40mm | 24 | 22 | ≥40 | ≥27 |
| 235 | 225 |
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Q & A
Q1: How can we get the sample?
A1: Free samples are available for your checking and testing.But you need to pay for the frieght cost.
Q2: Can you provide Mill Test Certificate?
A2: Yes! The Mill Test Certificate will be issued with the product.
Q3:Packing details?
A3:Packaged 25 Tons per 20 GP wooden case container.
20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC: 12032mm(Lengh)x2352mm(Width)x2698mm(High)
Q4:What is your terms of payment?
A4: 100% T/T advance.
30% T/T and balance against copy of documents.
30% T/T advance, balance L/C at sight.
Q5:Can we visit your factory?
A5: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.