Supplier, Stockiest, Dealer, Trader, Distributors, etc



Key Manufacturing Regions

Hebei Province: Known for steel tube manufacturing, especially in cities like Tianjin and Cangzhou.
Jiangsu Province: A major production hub for stainless steel tubes, particularly in Wuxi and Suzhou.
Zhejiang Province: Specializes in seamless tubes and pipes, with a focus on high-quality stainless steel products.
Shandong Province: Known for carbon steel tube production, catering to both domestic and international markets.




Types of Tubes Manufactured

Seamless Tubes: Produced without a welded seam, often used in high-pressure applications.
Welded Tubes: Made by welding a strip of metal into a cylindrical shape, commonly used in lower-pressure applications.
ERW (Electric Resistance Welded) Tubes: Produced through a welding process that uses electric resistance, ideal for transportation of oil, gas, and water.
LSAW (Longitudinal Submerged Arc Welded) Tubes: Used for large-diameter pipelines, particularly in oil and gas transportation.
Spiral Welded Tubes: Made by winding the steel into a spiral shape and welding the edges, used in water pipes and structural applications.



Materials Used

Carbon Steel: Commonly used for general-purpose tubes, offering good strength and affordability.
Stainless Steel: Used for corrosion-resistant applications, available in various grades like 304, 316, and 321.
Alloy Steel: Provides additional strength and heat resistance, often used in power plants and refineries.
Nickel Alloys: Used in high-temperature and corrosive environments, such as chemical processing and nuclear power.
Titanium and Other Special Alloys: Used in aerospace, medical, and high-end industrial applications.



Standards and Certifications

ASTM (American Society for Testing and Materials): Standards commonly used in the US.
EN (European Norm): Standards used in the European Union.
DIN (Deutsches Institut für Normung): German standards.
JIS (Japanese Industrial Standards): Standards widely used in Japan.
ISO 9001: Quality management certification.
API 5L/5CT: Standards for pipes and tubes used in the oil and gas industry.
PED (Pressure Equipment Directive): Required for tubes used in the European Union.



Manufacturing Capabilities

Large-Scale Production: Chinese tube factories often have extensive facilities that can handle large orders and offer quick turnaround times.
Custom Manufacturing: Many factories provide custom tube solutions, including non-standard sizes, materials, and special coatings.
Advanced Machinery: Factories use CNC machines, cold drawing, extrusion, and heat treatment processes to ensure high precision and quality.
Quality Control: Strict quality control measures, including non-destructive testing (NDT), hydrostatic testing, and visual inspections.




Leading Manufacturers in China

Tianjin Pipe Corporation (TPCO): One of the largest manufacturers of seamless steel tubes in China, particularly for the oil and gas industry.
Wuxi Seamless Special Pipe Co., Ltd.: Specializes in seamless steel tubes, serving industries like petrochemical, power generation, and shipbuilding.
Zhejiang Jiuli Hi-Tech Metals Co., Ltd.: Focuses on high-quality stainless steel and alloy tubes, particularly for heat exchangers and chemical processing.
Hengyang Valin Steel Tube Co., Ltd.: A major producer of seamless steel tubes, particularly for high-pressure applications.
Baosteel Group: One of China's largest steel producers, offering a wide range of tubes and pipes for various industries.


Specification Details
Tube Types Seamless, Welded, ERW, LSAW, Spiral Welded, Precision, Heat Exchanger
Materials Carbon Steel, Stainless Steel (304, 316, 321, etc.), Alloy Steel, Nickel Alloys, Titanium
Standards ASTM, EN, DIN, JIS, API 5L/5CT, ISO 9001, PED
Sizes Outer Diameter (OD): 1/8" to 48" (3.18mm to 1200mm)
Wall Thickness 0.5mm to 80mm
Length Up to 12 meters or customized
Surface Treatment Galvanized, Pickled, Polished, Black Paint, Anti-rust Oil
Production Process Cold Drawn, Hot Rolled, Cold Rolled, Extruded
Applications Oil & Gas, Petrochemical, Automotive, Power Generation, Construction, Medical
Certifications ISO 9001, API 5L/5CT, PED, CE
Testing Methods NDT, Hydrostatic Testing, Visual Inspection, Ultrasonic Testing
Packaging Bundles, Wooden Cases, Pallets, Plastic Wrapping, Custom Packaging



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