35CrMo Seamless Steel Pipes

High-strength Alloy Tubes For Mechanical And Industrial Applications

35crmo seamless steel pipes, compliant with gb/t 8162 and gb/t 18248 standards, are high-strength alloy steel tubes designed for high-load mechanical and industrial applications, offering excellent toughness and creep strength up to 500°c.

35CrMo Seamless Steel Pipe 35CrMo Alloy Steel Tube High-Pressure Seamless Pipe 35CrMo Structural Steel Pipe +2 More

35CrMo Seamless Steel Pipes

High-strength Alloy Tubes For Mechanical And Industrial Applications

35CrMo Seamless Steel Pipe 35CrMo Alloy Steel Tube High-Pressure Seamless Pipe 35CrMo Structural Steel Pipe +2 More

35CrMo seamless steel pipes are high-quality alloy steel tubes designed for demanding mechanical and industrial applications, compliant with standards such as GB/T 8162 (for structural use) and GB/T 18248 (for gas cylinders). These pipes are made from 35CrMo, a low-alloy steel containing chromium and molybdenum, offering superior static strength, impact toughness, and high fatigue limit. With a carbon content of approximately 0.32–0.40%, 35CrMo provides excellent hardenability, creep strength, and long-term performance at temperatures up to 500°C, making it ideal for high-pressure and high-load environments.

Manufactured through hot-rolling or cold-drawing processes, 35CrMo seamless pipes are available in outer diameters from 50 mm to 457 mm and wall thicknesses from 0.5 mm to 55 mm, with customizable lengths (e.g., 5.8 m or 12 m for container shipping). Common surface treatments include black painting, galvanizing, or anti-corrosion coatings to enhance durability. These pipes undergo rigorous testing, including tensile, impact, hardness, and non-destructive tests (e.g., ultrasonic, hydrostatic), to ensure quality and reliability in critical applications

The 35CrMo grade is widely used in industries such as petroleum, chemical, power, and automotive for manufacturing high-load components like crankshafts, gears, transmission shafts, and gas cylinders. Its international equivalents include 34CrMo4 (EN 10297-1), SCM435 (JIS), and similar grades, offering comparable high-strength properties. Compared to 40Cr, 35CrMo has higher hardenability and better performance under high-temperature and high-pressure conditions, though its welding performance is relatively poor, requiring preheating and post-weld heat treatment

35CrMo seamless steel pipes are a cost-effective, durable solution for applications requiring high strength, wear resistance, and toughness. They are widely produced in China and exported globally, supported by a robust supply chain and strict quality control, making them a preferred choice for engineers and manufacturers in high-demand sectors.

Key Benefits

High Strength

Tensile strength ≥985 MPa for demanding applications.

Impact Toughness

Excellent toughness at low temperatures (-20°C).

High-Temperature Resistance

Operates reliably up to 500°C.

Hardenability

Superior hardenability compared to 40Cr.

Seamless Design

Uniform strength and leak-proof performance.

Cost-Effective

Wide availability and durable design reduce costs.

Technical Specifications

Chemical Composition of 35CrMo Seamless Steel Pipes
Element	Composition (%)
Carbon (C)	0.32–0.40
Silicon (Si)	0.17–0.37
Manganese (Mn)	0.40–0.70
Phosphorus (P)	≤0.030
Sulfur (S)	≤0.030
Chromium (Cr)	0.80–1.10
Molybdenum (Mo)	0.15–0.25

Mechanical Properties of 35CrMo Seamless Steel Pipes
Property	Value
Tensile Strength (MPa)	≥985
Yield Strength (MPa)	≥835
Elongation, min (%)	≥12
Hardness (HBW, annealed)	≤229
Impact Energy (J, -20°C)	≥35

Comparison of 35CrMo with Other Grades
Feature	35CrMo (GB/T 8162)	40Cr (GB/T 8162)	34CrMo4 (EN 10297-1)
Material Type	Low-Alloy Steel	Low-Alloy Steel	Cr-Mo Alloy Steel
Temperature Range	Up to 500°C	Up to 450°C	Up to 500°C
Tensile Strength (MPa)	≥985	≥980	≥1000
Yield Strength (MPa)	≥835	≥785	≥800
Hardenability	High	Moderate	High
Applications	Gears, crankshafts, gas cylinders	Shafts, gears	Gas cylinders, structural parts
Key Advantage	High creep strength	Good machinability	High toughness at low temp

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A curated list of long-tail keywords for 35CrMo seamless steel pipes, covering specifications, applications, and material properties, presented in a multi-column layout.

Standards and Specifications

• 35CrMo seamless steel pipe specifications
• GB/T 8162 35CrMo alloy pipe standards
• 35CrMo high-pressure pipe tolerances

Applications

• 35CrMo seamless pipes for gas cylinders
• 35CrMo alloy tubes for crankshafts
• 35CrMo pipes for high-load gears

Material and Grades

• 35CrMo alloy steel properties
• 35CrMo SCM435 equivalent material
• 35CrMo high-strength alloy pipe

Manufacturing and Testing

• 35CrMo seamless pipe manufacturing process
• 35CrMo alloy pipe quality testing
• 35CrMo non-destructive testing

Procurement and Suppliers

• 35CrMo seamless steel pipe suppliers
• 35CrMo alloy pipe distributors
• 35CrMo seamless pipe price

Dimensions and Customization

• 35CrMo seamless pipe dimensions
• 35CrMo alloy pipe tolerances
• 35CrMo custom seamless pipes

Note: 35CrMo seamless steel pipes comply with GB/T 8162 and GB/T 18248 standards. For detailed specifications, refer to the relevant standards or contact a certified supplier.

35CrMo seamless steel pipe is a high-strength, low-alloy steel tube containing chromium and molybdenum, designed for high-load mechanical and industrial applications, compliant with GB/T 8162 and GB/T 18248 standards.

35CrMo pipes offer high tensile strength (≥985 MPa), yield strength (≥835 MPa), impact toughness (≥35 J at -20°C), and creep strength up to 500°C, with excellent hardenability but poor weldability.

Used in gas cylinders, crankshafts, gears, transmission shafts, boiler components, petrochemical pipelines, and automotive axles due to their high strength and toughness.

35CrMo has higher hardenability, creep strength, and temperature resistance (up to 500°C) than 40Cr, which is better suited for moderate loads and has better machinability.

35CrMo pipes are produced via hot-rolling or cold-drawing, often annealed or tempered, with surface treatments like black painting or galvanizing, and undergo tensile, impact, and non-destructive testing.

Common equivalents include 34CrMo4 (EN 10297-1), SCM435 (JIS), and 35CrMo4 (Italy), offering similar high-strength and toughness properties.

Tests include tensile, impact, hardness, ultrasonic, and hydrostatic tests to ensure compliance with GB/T 8162 and GB/T 18248 standards for high-pressure applications.

Industrial Applications

35CrMo seamless steel pipes are critical for high-load mechanical components, gas cylinders, and high-pressure systems, offering superior strength and durability.

Gas Cylinders

Used in manufacturing CNG and high-pressure gas cylinders.

Crankshafts and Gears

Ideal for high-load mechanical components.

Transmission Shafts

Supports high-torque engine components.

Boiler Components

Used in high-pressure boiler screws and nuts.

Petrochemical Pipelines

Handles high-pressure, non-corrosive media.

Automotive Axles

Supports high-load vehicle components.

35CrMo Seamless Steel Pipes

35CrMo Seamless Steel Pipes