GB/T 34204 CT55 Coiled Tubing Seamless Low Carbon Alloy Steel Tube For Petroleum
GB/T 34204 CT55; CT60; CT70; CT80; CT90 Coiled Tubing Seamless Low Carbon Alloy Steel Tube For Petroleum
Material
The GB/T 34204 standard specifies the requirements for seamless low carbon alloy steel tubes used in coiled tubing applications in the petroleum industry. These tubes are designed to withstand high pressures and temperatures, making them suitable for various oil and gas extraction processes.
Specification
The standard outlines the specifications for different grades of coiled tubing, including CT55, CT60, CT70, CT80, and CT90. Each grade has specific mechanical properties and chemical compositions tailored for various operational requirements.
Chemical Composition
The chemical composition of the low carbon alloy steel tubes is critical for ensuring their performance in demanding environments. Below is a table summarizing the chemical composition for each grade:
| Grade | C (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|
| CT55 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT60 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT70 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT80 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT90 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
Mechanical Properties
The mechanical properties of the coiled tubing are essential for ensuring their durability and performance under operational conditions. The following table presents the mechanical properties for each grade:
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| CT55 | ≥ 380 | 450-550 | ≥ 20 | ≤ 200 |
| CT60 | ≥ 450 | 500-600 | ≥ 18 | ≤ 210 |
| CT70 | ≥ 500 | 550-650 | ≥ 16 | ≤ 220 |
| CT80 | ≥ 550 | 600-700 | ≥ 14 | ≤ 230 |
| CT90 | ≥ 600 | 650-750 | ≥ 12 | ≤ 240 |
Application
The seamless low carbon alloy steel tubes specified in GB/T 34204 are primarily used in the petroleum industry for various applications, including:
- Coiled Tubing Operations: Used for drilling, completion, and workover operations in oil and gas wells.
- Well Intervention: Facilitating the repair and maintenance of existing wells.
- Hydraulic Fracturing: Serving as a conduit for injecting fluids into the wellbore to enhance oil and gas recovery.
- Production Tubing: Used in the production phase to transport hydrocarbons from the reservoir to the surface.
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.