Spiral Seam Steel Pipe For Underground Water Pipelines

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Introducing our spiral seam pipe for underground water pipes. The infrastructure of this innovation is a spiral seam pipe, professionally welded using the highest quality metal pipe welding technology on the market.

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The underground water pipe is a spiral steel pipe made by automatic double-wire double-sided submerged arc welding process. The pipe is made from strip steel coils and is extruded at a constant temperature to ensure its durability and longevity.

Main Physical and Chemical Properties of Steel Pipes (GB/T3091-2008, GB/T9711-2011 and API Spec 5L)
Standard	Steel Grade	Chemical Constituents (%)						Tensile Property						Charpy(V notch)Impact Test
		c	Mn	p	s	Si	Other	Yield Strength（Mpa）		Tensile Strength（Mpa）		（L0=5.65 √ S0 ）min Stretch Rate （%）
		max	max	max	max	max	Other	min	max	min	max	D ≤ 168.33mm	D ＞ 168.3mm
GB/T3091 -2008	Q215A	≤ 0.15	0.25 ＜ 1.20	0.045	0.050	0.35	Adding Nb\V\Ti in accordance with GB/T1591-94	215		335		15	> 31
	Q215B	≤ 0.15	0.25-0.55	0.045	0.045	0.035		215		335		15	> 31
	Q235A	≤ 0.22	0.30 ＜ 0.65	0.045	0.050	0.035		235		375		15	>26
	Q235B	≤ 0.20	0.30 ≤ 1.80	0.045	0.045	0.035		235		375		15	>26
	Q295A	0.16	0.80-1.50	0.045	0.045	0.55		295		390		13	>23
	Q295B	0.16	0.80-1.50	0.045	0.040	0.55		295		390		13	>23
	Q345A	0.20	1.00-1.60	0.045	0.045	0.55		345		510		13	>21
	Q345B	0.20	1.00-1.60	0.045	0.040	0.55		345		510		13	>21
GB/T9711-2011（PSL1）	L175	0.21	0.60	0.030	0.030		Optional adding one of Nb\V\Ti elements or any combination of them	175		310		27		One or two of the toughness index of impact energy and shearing area may be chosen. For L555, see the standard.
	L210	0.22	0.90	0.030	0.030			210		335		25
	L245	0.26	1.20	0.030	0.030			245		415		21
	L290	0.26	1.30	0.030	0.030			290		415		21
	L320	0.26	1.40	0.030	0.030			320		435		20
	L360	0.26	1.40	0.030	0.030			360		460		19
	L390	0.26	1.40	0.030	0.030			390		390		18
	L415	0.26	1.40	0.030	0.030			415		520		17
	L450	0.26	1.45	0.030	0.030			450		535		17
	L485	0.26	1.65	0.030	0.030			485		570		16
API 5L （PSL 1）	A25	0.21	0.60	0.030	0.030		For grade B steel,Nb+V ≤ 0.03%;for steel ≥ grade B,optional adding Nb or V or their combination, and Nb+V+Ti ≤ 0.15%	172		310		（L0=50.8mm）to be calculated according to the following formula:e=1944·A0 .2/U0 .0 A:Area of sample in mm2 U: Minimal specified tensile strength in Mpa		None or any or both of the impact energy and the shearing area is required as toughness criterion.
	A	0.22	0.90	0.030	0.030			207		331
	B	0.26	1.20	0.030	0.030			241		414
	X42	0.26	1.30	0.030	0.030			290		414
	X46	0.26	1.40	0.030	0.030			317		434
	X52	0.26	1.40	0.030	0.030			359		455
	X56	0.26	1.40	0.030	0.030			386		490
	X60	0.26	1.40	0.030	0.030			414		517
	X65	0.26	1.45	0.030	0.030			448		531
	X70	0.26	1.65	0.030	0.030			483		565

The pipe’s spiral-jointed construction ensures it is very strong and pressure-resistant, making it a perfect choice for underground water systems.

In addition to strength and durability, underground water pipes are designed for ease of installation. Spiral seam construction is flexible and adaptable, allowing for easy maneuvering and positioning in even the most challenging terrain. This means you can lay pipes quickly and efficiently, saving time and labor costs.

In addition, the use of high-quality materials and advanced welding technology ensures that underground water pipes are highly resistant to corrosion and rust. This means it will maintain its integrity and functionality for years, even in harsh underground conditions.

Our underground water pipes are available in a variety of sizes to meet the specific needs of your project. Whether you are laying a small domestic water supply or a large industrial system, we have the perfect pipe for you. Our expert team can also provide tailored advice and support to help you choose the pipes that best suit your requirements.

When it comes to underground water systems, you need a pipe you can trust. With advanced spiral joint construction, quality materials and expert welding, our underground water pipes are ideal for any water supply network. Durable, reliable and easy to install, this pipe will stand the test of time, giving you peace of mind and superior performance.

All in all, spiral seam pipes are an excellent choice for anyone who needs a high-quality, reliable, and durable water distribution solution. With its advanced spiral seam construction and professional metal pipe welding, the pipe offers unparalleled strength, flexibility and corrosion resistance. Don’t compromise on the quality of your groundwater system – choose underground water pipes as a solution you can trust.

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