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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.
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.
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.
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.
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.
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 |