HUYI METAL is the world's premier inventor, developer and producer of nickel and cobalt alloys, with a product portfolio of more than 100 alloy components, forging products and welding consumables, more than 80 percent of which were invented in our own laboratories. All of our alloys are designed to help redefine what is possible in the energy and industrial sectors.

Steel Pipes for Machinery Manufacturing

Creating the World's High-Performance Alloys.
HUYI METAL is the world leader in the invention, production and supply of high-nickel alloys for critical engineering.

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Description
Characteristics
Machining Data

Steel Grades

Standard OrganizationStandard ReferenceCommon Steel GradesApplication Notes
ASTM (American Society for Testing and Materials)ASTM A5191010, 1020, 4130, 4140Seamless carbon and alloy steel for mechanical tubing
ASTMASTM A5131010, 1020, MTX1020, 4130Electric-resistance-welded carbon and alloy steel mechanical tubing
AISI (American Iron and Steel Institute)-1010, 1020, 4130, 4140Alloy steels and carbon steels for mechanical parts
GB (Chinese National Standards)GB/T 816220#, 35#, 45#, Q345BSeamless steel tubes for structural purposes
JIS (Japanese Industrial Standards)JIS G3445STKM 11A, STKM 12B, STKM 13CCarbon steel tubes for machine structural purposes
DIN (Deutsches Institut für Normung)DIN 1629St37.0, St44.0, St52.0Seamless circular tubes of non-alloy steels with special quality requirements
DINDIN 2391St35, St45, St52Seamless precision steel tubes
EN (European Standards)EN 10297E235, E275, E315, E355Seamless circular steel tubes for mechanical and general engineering purposes
ENEN 10305E215, E235, E255, E355Steel tubes for precision applications, seamless cold drawn tubes

(Please contact us for standards and steel grades not mentioned)


Advantages as a Steel Supplier

Wide Product Range:Offering a comprehensive range of steel products, from structural steels, tool steels, stainless steels, to specialty grades, ensuring customers find what they need.

Quality Assurance:Implementing rigorous quality control processes and adhering to international standards to ensure the steel supplied is of the highest quality.

Competitive Pricing:Leveraging economies of scale, efficient processes, and strategic partnerships to provide competitive pricing to customers.

Experienced Staff:Possessing a knowledgeable and experienced team capable of providing expert advice, technical support, and solutions tailored to the client's requirements.

Fast Delivery: Having a well-stocked inventory and efficient logistics capabilities to ensure timely delivery, even for bulk or urgent orders.

Customization Capabilities:Offering services like cutting, bending, welding, or other fabrication processes tailored to customers' specific needs.

Sustainability:Adopting eco-friendly practices and ensuring that steel production and supply align with sustainability goals, reducing environmental impact.

Strong Supplier Relationships:Maintaining robust relationships with leading steel mills and manufacturers, ensuring consistent supply and access to the latest innovations in steel.

Technology Integration:Utilizing modern technology for inventory management, order processing, and customer communication to streamline operations and enhance the customer experience.

Global Reach: Having the infrastructure and network to supply steel products to customers across different regions or even internationally.

After-sales Support:Providing excellent after-sales service, addressing any concerns, and ensuring customer satisfaction long after the initial purchase.

Research & Development: Continually investing in R&D to understand market trends, new steel applications, and emerging technologies in the steel industry.

Training & Development:Regularly training staff to stay updated with the latest industry standards, technologies, and best practices.

Transparency: Keeping customers informed about pricing, product availability, delivery times, and any other factors that might affect their purchase decisions.

Safety Focus: Ensuring all operations prioritize safety, reducing risks for both employees and customers.



Application Areas

Automotive Industry: Used in the manufacture of axles, drive shafts, and steering columns.

Construction Machinery: For hydraulic systems, rollers, and structural components.

Agricultural Machinery: In the construction of tractors, combine harvesters, and irrigation systems.

Mining Equipment: For drilling rods, hydraulic supports, and transport tubes in mining operations.

General Machinery: Such as gears, bearings, and bushings in various machines.

Energy Sector: In wind turbines, transmission shafts, and other renewable energy equipment.

Machine Tools: For precision rollers, spindles, and components requiring high strength.

Material Handling Equipment: Including conveyor shafts, forklift arms, and telescopic handlers.


Common Dimensions

Outer Diameter (OD): Ranging from very small (a few millimeters) to several inches or more.

Wall Thickness: Can vary widely from thin-walled to several inches thick, depending on the application's load-bearing requirements.

Length: Standard lengths may vary, but custom lengths are often produced to meet specific project requirements.

Steel pipes can be further processed to meet exact size specifications and tolerances, which are particularly tight in machinery applications where precision is crucial.


Processing Technology

Steel Making: High-quality steel is melted and cast into billets or blooms.

Hot Rolling or Cold Drawing: The billets or blooms are then hot-rolled or cold-drawn to produce the desired shape and size of the pipe.

Heat Treatment: To achieve desired mechanical properties, such as increased hardness or strength, the pipes are often heat-treated.

Surface Finishing: This may include processes such as turning, grinding, or polishing to achieve the required surface smoothness or dimensional accuracy.

Cutting and Shaping: Pipes are cut to the required length and may undergo further machining to create threads, grooves, or other features.

Coating: Some applications may require the pipes to be coated for corrosion resistance or reduced friction.

Testing and Quality Control: This includes dimensional checks, non-destructive testing (NDT) like ultrasonic testing, and mechanical property testing to ensure the pipes meet all specifications.


Physical Properties

Physical PropertyUnitTypical Range or ValueNotes
Yield StrengthMPa (psi)300 - 900 (43,500 - 130,500)The stress at which a material begins to deform plastically.
Tensile StrengthMPa (psi)400 - 1000 (58,000 - 145,000)The maximum stress a material can withstand while being stretched.
Elongation%10 - 25The degree to which a material can be deformed before fracture.
Modulus of ElasticityGPa (ksi)190 - 210 (27,557 - 30,457)The ratio of stress to strain in the elastic deformation phase.
HardnessHB, HRC, HVVaries (e.g., 120-280 HB for carbon steels)The resistance of a material to deformation, indentation, or scratching.
Impact ToughnessJ (ft·lbf)Varies (e.g., 27 J (20 ft·lbf) at -29°C (-20°F) for some alloys)The material's ability to resist fracture under sudden impact.
Fatigue StrengthMPa (psi)Varies with steel grade and heat treatmentThe highest stress that a material can withstand for a given number of cycles without breaking.
Wear Resistance-Relative value, no specific rangeThe ability to resist abrasion or surface wear during use.
Thermal ConductivityW/m·K (BTU/hr·ft·F)20 - 60 (11.6 - 34.8)The ability to conduct heat, important for heat dissipation in machinery.
Coefficient of Thermal Expansionµm/m·K (in/in·F)9 - 14 (5 x 10^-6 - 7.8 x 10^-6)The rate at which the material expands with temperature increase.
Densitykg/m³ (lb/in³)7800 - 8050 (0.28 - 0.29)The mass per unit volume of steel.

 

Chemical Composition

ElementASTM A519 1010ASTM A519 1020ASTM A519 4130ASTM A519 4140EN 10297 E355JIS G3445 STKM13C
Carbon (C)0.08 - 0.130.18 - 0.230.28 - 0.330.38 - 0.43≤0.220.25 - 0.35
Manganese (Mn)0.30 - 0.600.30 - 0.600.40 - 0.600.75 - 1.00≤1.600.30 - 0.90
Phosphorus (P)≤0.04≤0.04≤0.035≤0.035≤0.025≤0.035
Sulfur (S)≤0.05≤0.05≤0.040≤0.040≤0.035≤0.035
Silicon (Si)0.10 - 0.300.10 - 0.300.15 - 0.350.15 - 0.35≤0.550.15 - 0.35
Chromium (Cr)--0.80 - 1.100.80 - 1.10--
Molybdenum (Mo)--0.15 - 0.250.15 - 0.25--
Nickel (Ni)------
Copper (Cu)------