The long-distance transportation of oil and natural gas mainly relies on pipelines, and straight seam steel pipes are widely used in this field due to their manufacturing process and performance characteristics.
The long-distance transportation of oil and natural gas mainly relies on pipelines, and straight seam steel pipes are widely used in this field due to their manufacturing process and performance characteristics. Here is some key information about straight seam steel pipes for oil and gas transportation:
Manufacturing process: Straight seam steel pipe (ERW) is a steel pipe formed by curling steel plates or steel strips and then welding them longitudinally. Its weld seam is parallel to the longitudinal direction of the steel pipe.
Technical requirements: Straight seam steel pipes need to meet specific technical requirements during the production process, including material selection, dimensional accuracy, mechanical properties and non-destructive testing.
Standards: Straight seam steel pipes for oil and gas transportation usually follow international and national standards such as API Spec 5L, ISO 3183, GB/T 9711, etc.
Application: Due to its good mechanical properties and high manufacturing efficiency, straight seam steel pipes are suitable for long-distance pipelines of oil and natural gas, especially in the construction of high-grade, large-diameter pipelines.
Advantages: Compared with other types of steel pipes, such as spiral seam submerged arc welded pipes (SSAW), straight seam steel pipes have certain advantages in weld quality and pipe mechanical properties, especially in high-pressure transportation systems.
Development trend: With the advancement of technology, the application of straight seam steel pipes in the field of oil and gas transportation continues to develop. For example, economic benefits can be enhanced by improving pipeline steel grades and transportation pressures.
Localization: China has promoted the localization of straight-seam steel pipes in major projects such as the "West-East Gas Pipeline" and improved the technical level and production capacity of the domestic pipe-making industry.
Quality control: When producing straight seam steel pipes, strict quality control is required, including ultrasonic inspection of welds, X-ray inspection, hydrostatic testing, etc., to ensure the safety and reliability of the pipeline.
Market prospects: Due to the growth of global oil and natural gas demand, the market prospects of straight seam steel pipes in the field of oil and gas transportation are promising, and it is expected to have sustained growth in the next few years.
Special requirements: For specific application environments, such as submarine pipelines or transportation pipelines under extreme climate conditions, straight seam steel pipes may need to meet additional technical requirements, such as corrosion resistance, low temperature toughness, etc.
In summary, due to its high efficiency and reliability in oil and gas transportation, straight seam steel pipe has become one of the preferred materials for pipeline construction in this field. With the development of technology and market demand, the application scope and technical level of straight seam steel pipes will continue to improve.
DIAMETER | PACKAGING | BS1387 | ASTM A53 | ||||||||||
INCH | DN | MM | LARGE | SMALL | O.D | W,T (MM) | W.T (MM)实做 | O.D | W.T (MM) | ||||
THEORETICALLY | ACTUALLY | PCS | MM | A | ACTUALLY | B | ACTUALLY | MM | SCH40 | ACTUALLY | |||
1/2” | 15 | 20 | 21.3 | 217 | 169 | 21.3 | 2.00 | 1.80 | 2.60 | 2.50 | 21.3 | 2.77 | 2.50 |
3/4” | 20 | 25 | 26.9 | 169 | 127 | 26.9 | 2.30 | 2.20 | 2.60 | 2.50 | 26.7 | 2.87 | 2.75 |
1” | 25 | 32 | 33.4 | 127 | 91 | 33.7 | 2.60 | 2.50 | 3.20 | 3.00 | 33.4 | 3.38 | 3.00 |
11/4” | 32 | 40 | 42.4 | 91 | 61 | 42.4 | 2.60 | 2.50 | 3.20 | 3.00 | 42.2 | 3.56 | 3.25 |
11/2” | 40 | 47 | 48.3 | 91 | 61 | 48.3 | 2.90 | 2.75 | 3.20 | 3.00 | 48.3 | 3.68 | 3.25 |
2” | 50 | 58 | 60.3 | 61 | 37 | 60.3 | 2.90 | 2.75 | 3.60 | 3.50 | 60.3 | 3.91 | 3.50 |
2 1/2” | 65 | 73 | 76.1 | 37 | 19 | 76.1 | 3.20 | 3.00 | 3.60 | 3.50 | 73 | 5.16 | 4.75 |
3” | 80 | 87 | 88.9 | 37 | 19 | 88.9 | 3.20 | 3.00 | 4.00 | 3.75 | 88.9 | 5.49 | 5.00 |
4” | 100 | 113 | 114.3 | 19 | 19 | 114.3 | 3.60 | 3.50 | 4.50 | 4.25 | 114.3 | 6.02 | 5.50 |
5” | 125 | 140 | 19 | 10 | 139.7 | - | - | 5.00 | 4.75 | 141.3 | 6.55 | 6.00 | |
6” | 150 | 165 | 19 | 7 | 165 | - | - | 5.00 | 4.75 | 168.3 | 7.11 | 6.50 | |
8” | 200 | 219 | 7 | 5 | 219.1 | - | - | - | - | 219.3 | 8.18 | 7.50 | |
10” | 250 | 273 | 5 | 3 | 273 | - | - | - | - | 273 | 9.27 | 8.50 | |
12” | 300 | 325 | 3 | 3 | 325 | - | - | - | - | 323.9 | 10.31 | 9.50 |
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