Your Professional Welded Pipe Supplier
As the subsidiary company of Rizhao Azure-B Supply Chain Co.,Ltd, Hainan Yuan Steel Pipe Supply Chain Co.,Ltd is the top steel pipe stockist and distributor in China. As a first-tier agency of several major steel companies in China including TPCO, Baosteel and so on, We are committed to offering an easier way to international trade, leaving clients rest easy.
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ASTM A512 Mechanical TubeGrades:MT1010-1115read more
OD sizes: ranging from 1/4 inch to 3-1/2 inch.
WT size:ranging from 0.035 to 0.500 in.
Applications: axles, truck and railroad parts, and many more where... -
Mechanical TubeMechanical tubes are fundamental components that play a vital role in various industries, from manufacturing and construction to automotive and aerospace engineering. These versatile structures,...read more
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KS D3566 Structural Tube QuotationOutside Diameter: 21.7-609.6mmread more
Wall Thickness: 2-22mm
Material: SPS 290/SPS 400/SPS 500/SPS490/SPS400 -
ASTM A671 EFW Welded Carbon Steel PipePlain Carbon steel grades:CA 55, CB 60,CB 65,CB 70 CC 60,CC 65,CC 70read more
Nickel steel grades: CF 65,CF 70,CF 65,CF 70
Alloy steel grades:CJA 115, CJB 115,CJE 115,CJF 115,CJH 115,CJP... -
EN 10217 Welded Steel Pipe for Pressure PurposeEN 10217-1 Non-alloy steel tubes with specified room temperature propertiesread more
EN 10217-2 Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties... -
EN 10210-3 Structural Hollow SectionsEN 10210-3 Structural Hollow Sections mainly cover high-strength and weather-resistant steels for structural purposes. High-strength steel has proven successful in heavy equipment and vehicles,...read more
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EN 10210-1 Structural Hollow SectionsWe provide EN 10210-1 Structural Hollow Sections in grades such as P235GH, P355N, 1.4301, and others. Our products utilize advanced welding and heat treatment technologies, achieving a test pass...read more
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EN 10219-1 Structural Hollow SectionsStructural Hollow Sections are manufactured by continuously forming a steel strip at room temperature. The strip passes through forming stands that gradually bend it into a circular shape.read more
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ASTM A135 ERW Welded Steel Pipe Grade A BASTM A135 ERW Welded Steel Pipe is intended for conveying gas,vapor,water or other liquid, especially suit for fire sprinkler pipe.read more
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ASTM A500 Square Steel TubeASTM A500,standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes. ASTM A500 is the most common specification for Hollow...read more
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KS D3568 Structural TubeForm:Round Tube,Square tubing,Rectangular steel tuberead more
Grades:SPSR 400,SPSR 490
Application: KS D3568 SPSR400, SPSR490 is used for civil engineering architecture and other... -
ASTM A252 Steel Pipe PilesASTM A252 covers nominal (average) wall steel pipe piles of cylindrical shape and applies to pipe piles in which the steel cylinder acts as a permanent load-carrying member, or as a shell to form...read more
Why choose us
We are committed to offering an easier way to international trade, leaving clients rest easy.
We hold steel pipe stock of at least 15000 tons per months with a sales about 30000 tons per month.
In view of the special steel trade system in China, we are a major player in Chinese Steel market.
Hainan Yuan Steel Pipe Supply Chain Co.,Ltd is the top steel pipe stockist and distributor in China.
Seamless tube is tubing that has no weld seam as it is produced from a solid round billet. The billet is produced to a required chemistry in either steel making process and is heated and then pierced and rolled or spun to produce a shell or mother tube. The mother tube is then worked by further hot finishing and cold finishing processes to produce the desired shape, dimensions, and properties. It is also tested to assure proper that the final material meets the required specifications. Inherent in this product is the capability to provide thicker walls than other tube, and with higher strengths and a more uniform structure.

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Material |
Carbon steel |
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Color |
Black surface,color paiting,varnish,galvanized coat |
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Standard |
GB/T6725 GB/T6728 EN10210,EN10219,ASTM A500,ASTM A36,AS/NZS1163,JIS,EN,DIN17175 |
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Grade |
Q195、Q235(A、B、C、D)、Q345(A、B、C、D)、ASTM A500、S235JR、S235JOH、S355JR、S355JOH、C250LO、C350LO、SS400 |
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Delivery&Shipment |
1) By Container(1-5.8 meter suitable to load 20ft container,6-12 meter length suitable to load 40 ft container) 2) Bulk shipment |
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Size |
15X15MM-400X400MM 40X20MM-600X400MM |
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Test & Inspection |
With Hydraulic Test, Eddy Current , Infrared Test,The third party inspection |
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Used |
Used For irrigation,Structure, Accessorize And Construction |
advantage




Cost-Effectiveness: Welded steel pipes are generally less expensive to produce than seamless pipes, as they can be manufactured in larger quantities and with less material waste.
Versatility: They can be produced in a wide range of sizes and thicknesses, accommodating diverse applications, from construction to oil and gas transport.
Strength and Durability: Welded steel pipes maintain high strength and durability, making them suitable for high-pressure applications. The welding process can also enhance the material's overall structural integrity.
Uniformity: The manufacturing process allows for consistent wall thickness and diameter, which can lead to improved performance in applications requiring precise specifications.
Ease of Fabrication: They can be easily cut, shaped, and joined with other materials, facilitating complex designs and reducing installation time.
Resistance to Corrosion: When treated with protective coatings or materials, welded steel pipes can offer good resistance to corrosion, extending their lifespan in various environments.
Availability: Welded steel pipes are widely available and can be sourced from many manufacturers, ensuring a steady supply for projects.
Recyclability: Steel is a recyclable material, making welded steel pipes an environmentally friendly choice when considering life cycle impacts.
Customizability: They can be manufactured to meet specific requirements, including unique dimensions, grades, and finishes.
Application
Oil and Gas Industry
In the oil and gas industry, welded pipes are extensively used for transporting crude oil, natural gas, and refined petroleum products. The pipes' ability to withstand high pressures and corrosive substances makes them indispensable for offshore and onshore pipelines.
Construction and Infrastructure Projects
Welded pipes play a critical role in construction and infrastructure projects, where they are used for structural support, underground utility systems, and water supply networks. The pipes' strength and durability ensure the integrity and safety of buildings and infrastructures.
Water Supply and Sewage Systems
Welded pipes are widely employed in water supply and sewage systems due to their corrosion resistance and leak-proof joints. They ensure the efficient flow of water and wastewater, contributing to the overall public health and environmental well-being.
Power Generation Plants
Power generation plants, whether thermal, nuclear, or renewable, often rely on welded pipes for their cooling systems and steam distribution. The pipes' ability to withstand high temperatures and pressures is crucial for the reliable operation of power plants.
Automotive and Transportation Sector
In the automotive and transportation sector, welded pipes find applications in exhaust systems, chassis components, and fuel delivery systems. The pipes' versatility and customizability cater to the diverse needs of this industry.
FAQ
We're professional welded pipe suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy bulk welded pipe made in China here and get quotation from our company. For price consultation, contact us.
JIS G3454 Carbon Steel Pipe-
Seamless Steel Tube for Automotive StructuresWe trade a wide range of seamless steel pipes, especially high-strength steel pipes. They are widely used in the...read more
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ASTM A335 Alloy Steel PipeStandard: ASTM A335read more
Grade:P1,P2,P5,P9,P11,P91,P92
OD:10.3-660mm
WT:1.6-60mm... -
ASTM A512 Mechanical TubeGrades:MT1010-1115read more
OD sizes: ranging from 1/4 inch to 3-1/2 inch.
WT size:ranging from 0.035 to 0.500... -
ASTM A312 Stainless Steel PipeOD: NPS 1/8" to 30"read more
WT: SCH 5S, 10S, 40S, 80S
Grade: TP304, TP304L, TP316, TP316L -
Mechanical TubeMechanical tubes are fundamental components that play a vital role in various industries, from manufacturing and...read more
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Steel Tube For Automotive Structures**Steel Tube for Automotive Structures Steel tubes have become an indispensable component in the automotive...read more
