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We offer steel and steel fabrication services

We are a first-class steel service center with industry-leading technology, offering a wide range of steel and processing services to our customers.

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Beichen District, Tianjin City, China [email protected] +86 18454487887 8:30am to 6pm

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Spiral Steel Pipe

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spiral steel pipe

The outer diameter of the spiral tube is about 30 nanometers, the inner diameter is about 10 nanometers, and the pitch between adjacent spirals is about 11 nanometers. Every week of the helical tube is surrounded by 6 nucleosomes, and the H1 histone is located on the inner surface of the helical tube lumen, which plays an important role in maintaining the structure of the helical tube. Helicalization of 10 nm fibers composed of nucleosomes to form 30 nm thick fibers further compresses the DNA length by a factor of 6.

industrial pipe，Spiral pipes are mainly used for oil and natural gas pipelines, and their specifications are expressed by outer diameter * wall thickness. There are single-side welded and double-sided welded spiral pipes, and the welded pipes should ensure that the hydraulic test, the tensile strength of the weld and the cold bending performance meet the regulations.


spiral steel pipe specification

carbon spiral pipe welded pipe

Outside Diameter OD219mm-3500mm
Wall Thickness1.5mm-25mm
Length3-18M
SurfaceBare, Lightly Oiling, Black Painting, Anti-corrosion Coating (FBE / 2PE / 3PE)
PackingIn Bulk, Ends Protector on Both Sides, Waterproof Materials Wrapped
Applicationwater pipe, steel piling, oil and gas pipes, steel pipelines , etc.

Product specifications

ClassficationStandardMain Products
Steel Pipe for Fluid ServiceGB/T 14291Welded pipe for mine fluid sevice
GB/T 3091Welded pipe for low pressure fluid service
SY/T 5037Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service
ASTM A53Black and hot-hipped galvanized welded and seamless steel pipe
BS EN10217-2Welded steel tybes for pressure purposes - delivery technical conditions - part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties
BS EN10217-5Welded steel tybes for pressure purposes - delivery technical conditions - part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties
Steel Pipe for Ordinary StructureGB/T 13793Longitudinally electric resistance welded steel pipe
SY/T 5040Spirally submerged arc welded steel pipe piles
ASTM A252Welded and seamless steel pipe piles
BS EN10219-1Cold formed welded structural hollow sections of non-alloy and fine grain steels - part1: Technical delivert conditions
BS EN10219-2Cold formed welded structural hollow sections of non-alloy and fine grain steels - part2: tolerances dimmsions and sectional properties
Line PipeGB/T 9711.1Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
GB/T 9711.2Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe)
API 5L PSL1/2Line pipe
CasingAPI 5CT/ ISO 11960 PSL1Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries

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spiral steel pipe spiral steel pipe specification

Industries We Proudly Service

Industries We Proudly Service

Building Construction
Specific requests for on-site construction are generally required and we will work with our clients to meet their needs.
Oil & Gas
We supply high strength steel to the oil and gas industry and our equipment is customized to cut advanced high strength steel for the oil and gas industry.
Medica Equipment
TISCO supplies hospital beds and related furniture applications that require low micro surface finishes for plating applications.
Spaceflight
Our high-quality steels and aircraft-grade metals also play an important role in specialty aerospace parts.
Agriculture
TISCO has been a proud supplier of steel to the agriculture and farming industry, and we understand the ups and downs that the industry has experienced.
Heavy Equipment
We also supply several exercise equipment manufacturers with special high surface quality and high strength applications.

Can I go to your factory to visit?

Of course, we welcome customers from all over the world to visit our factory.
Q : How long is your delivery time?
A : Our daily inventory is more than 6000 tons, so for common product size, just need 5-7 work days from stocks, ifthe special size from new production, delivery 15-21 days.
Q : Does the product have quality inspection before loading?
A : Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept third party inspection.
Q : Can you accept customization?
A : Yes. Can be customized according to customer requirements
Q : How do we trust your company?
A : We specialise in steel business for years as golden supplier on Alibaba, headquarter locates in Jinan, Shandong province, you are welcome to investigate in any ways, by all means, we have CE and ISO9001 certificate, quality can be guaranteed, the most important point is that we ship enough weight as per the order.
Q : What's your supported standard of products?
A : We can supply BG/T, ASTM;, EN/DIN,; JlS and other common standards products. Customers can name their requests and we can supply accordingly.

Steel Service Center

We are the leader of China's steel industry，Providing you with the best steel and service

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Beichen District, Tianjin City, China Mail us:
[email protected] Call us now:
+86 18454487887
Tianjin TISCO International Trade Co., Ltd.

Tianjin TIsco has extensive industry experience, an expert staff, and state-of-the-art equipment.

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