Pipe Line Welding Spiral Seam Steel Pipes
At Cangzhou Spiral Steel Pipe Group Co., Ltd.,Our spiral seam pipes are high quality products that meet the highest industry standards. Our pipes are designed for a variety of applications and are known for their durability, strength and corrosion resistance.
Carbon is the most basic element in steel and the basis for distinguishing steel from iron. Our spiral seam pipes are made from high quality carbon steel ensuring maximum strength and durability. With their superior carbon content, our pipes are suitable for a wide range of industrial applications.
Mechanical Property
|
steel grade |
minimum yield strength |
Tensile strength |
Minimum elongation |
Minimum impact energy |
||||
|
Specified thickness |
Specified thickness |
Specified thickness |
at test temperature of |
|||||
|
＜16 |
＞16≤40 |
＜3 |
≥3≤40 |
≤40 |
-20℃ |
0℃ |
20℃ |
|
| S235JRH |
235 |
225 |
360-510 |
360-510 |
24 |
- |
- |
27 |
| S275J0H |
275 |
265 |
430-580 |
410-560 |
20 |
- |
27 |
- |
| S275J2H |
27 |
- |
- |
|||||
| S355J0H |
365 |
345 |
510-680 |
470-630 |
20 |
- |
27 |
- |
| S355J2H |
27 |
- |
- |
|||||
| S355K2H |
40 |
- |
- |
|||||
In addition to carbon, our spiral seam tubes contain other key elements such as nickel and chromium. Nickel is a ferromagnetic metal that adds to the overall strength and polishability of the pipe. Additionally, it resists corrosion and ensures a longer service life for our pipes. Chromium, on the other hand, is an important element in stainless steel and has excellent corrosion resistance. The inclusion of chromium in our spiral seam pipes further increases their longevity and reliability.
One of the main advantages of our spiral seam pipes is their seamless design, which is achieved through advanced welding technology. Our state-of-the-art SAWH (Submerged Arc Spiral Welding) welding technology ensures a strong and long-lasting bond between pipe steel plates. This welding technology not only enhances the mechanical properties of the pipe, but also ensures a smooth inner surface, which is conducive to the effective flow of various fluids or gases.
Our spiral seam pipes are widely used in many industries, including oil and gas, water transportation, construction and infrastructure development. It can be implemented in onshore and offshore projects and in pipeline systems for different purposes. With its excellent corrosion resistance and high tensile strength, our pipes are the first choice for pipe welding in harsh environments.
Chemical Composition
|
Steel grade |
Type of de-oxidation a |
% by mass, maximum |
||||||
|
Steel name |
Steel number |
C |
C |
Si |
Mn |
P |
S |
Nb |
|
S235JRH |
1.0039 |
FF |
0,17 |
— |
1,40 |
0,040 |
0,040 |
0.009 |
|
S275J0H |
1.0149 |
FF |
0,20 |
— |
1,50 |
0,035 |
0,035 |
0,009 |
|
S275J2H |
1.0138 |
FF |
0,20 |
— |
1,50 |
0,030 |
0,030 |
— |
|
S355J0H |
1.0547 |
FF |
0,22 |
0,55 |
1,60 |
0,035 |
0,035 |
0,009 |
|
S355J2H |
1.0576 |
FF |
0,22 |
0,55 |
1,60 |
0,030 |
0,030 |
— |
|
S355K2H |
1.0512 |
FF |
0,22 |
0,55 |
1,60 |
0,030 |
0,030 |
— |
|
a. The deoxidation method is designated as follows: FF: Fully killed steel containing nitrogen binding elements in amounts sufficient to bind available nitrogen (e.g. min. 0,020 % total Al or 0,015 % soluble Al). b. The maximum value for nitrogen does not apply if the chemical composition shows a minimum total Al content of 0,020 % with a minimum Al/N ratio of 2:1, or if sufficient other N-binding elements are present. The N-binding elements shall be recorded in the Inspection Document. |
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At Cangzhou Spiral Steel Pipe Group Co., Ltd., we put quality and customer satisfaction first. Our dedicated team of professionals ensures that each spiral seam pipe undergoes strict quality control processes to meet international standards. In addition, we offer a comprehensive range of coating options for pipes, including epoxy, polyetlene and cement mortar, to further enhance the pipe’s corrosion resistance and extend its service life.
In summary
Cangzhou Spiral Steel Pipe Group Co., Ltd. is proud to provide high-quality spiral seam pipes for a variety of applications. We focus on precision manufacturing, advanced welding technology and quality materials to provide customers with reliable, efficient solutions for their piping needs. Trust us to meet all your requirements and experience first-hand the reliability and resilience of our spiral seam pipes.
