Advantages Of Using Spiral Submerged Arc Welded Steel Pipes For Underground Water Pipelines

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When laying underground water lines, it is important to choose the correct pipe type to ensure durability and longevity. A popular choice for underground water lines is spiral welded pipe, also known as SSAW steel pipe.

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SSAW steel pipe is a type of spiral submerged arc welded pipe commonly used in a variety of applications, including groundwater lines. Its unique spiral welding process produces large-diameter pipes with consistent wall thickness, making it ideal for underground water transportation.

Mechanical Property

steel grade	minimum yield strength Mpa		Tensile strength		Minimum elongation %	Minimum impact energy J
steel grade	Specified thickness mm		Specified thickness mm		Specified thickness mm	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	275	265	430-580	410-560	20	27	-	-
S355J0H	365	345	510-680	470-630	20	-	27	-
S355J2H						27	-	-
S355K2H						40	-	-

One of the main advantages of using spiral submerged arc welded steel pipe for groundwater lines is its high strength and durability. The spiral welding process creates a strong and reliable pipe that can withstand the pressure and weight of being buried underground. This strength is critical to preventing leaks and ensuring the long-term integrity of water pipes.

Additionally, SSAW steel pipe is resistant to corrosion, making it an excellent choice for underground applications where pipes are exposed to moisture and other environmental factors. This corrosion resistance helps extend the life of your pipes and reduces the need for frequent maintenance and repairs.

Another benefit of using spiral submerged arc welded steel pipe for groundwater lines is its flexibility and adaptability. The spiral welding process can produce pipes of different diameters, making it suitable for a variety of water pipe applications. Additionally, the flexibility of SSAW steel pipe makes it easy to install and operate, especially in areas with challenging terrain or obstacles.

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.

In addition to strength, durability, and flexibility, spiral submerged arc welded steel pipe is cost-effective compared to other types of pipe. The spiral welding process reduces production costs, making it a more economical option for large water pipe projects. The long-term durability and low maintenance requirements of SSAW steel pipe also contribute to overall cost savings over the life of the water line.

Overall, there are many advantages to using spiral submerged arc welded steel pipe for groundwater lines, including high strength, durability, corrosion resistance, flexibility, and cost-effectiveness. These qualities make it a reliable and practical option for underground water transportation, whether for municipal infrastructure, industrial applications, or agricultural purposes.

In summary, when it comes to choosing the best pipe for underground water lines, spiral submerged arc welded steel pipe is the best choice. Its spiral-welded construction provides the strength, durability and corrosion resistance needed for long-term performance, while its flexibility and cost-effectiveness make it an attractive option for water pipe projects of all sizes. By choosing spiral submerged arc welded steel pipe, you can ensure the reliability and longevity of your underground water lines, giving you peace of mind and confidence in your water system.

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