Alloy Steel Pipe

Alloy Steel Pipes Introduction

As core adaptive piping for high-end equipment manufacturing and harsh working conditions, our alloy steel pipes are produced from premium raw materials and advanced rolling technologies. Integrating multiple advantages including high strength, resistance to extreme temperatures, and corrosion resistance, we provide customized pipe solutions for the chemical, energy, machinery, and high-end equipment industries. Balancing durability and working condition adaptability, our products help customers enhance the operational stability of their end equipment.

Core Product Categories & Specifications

We mainly cover core categories such as chromium-molybdenum alloy pipes, manganese-vanadium alloy pipes, and stainless alloy pipes, precisely matching the performance requirements of different application scenarios.

Our product range centers on precision seamless alloy steel pipes, with customized welded alloy steel pipes also available. We offer full coverage of outer diameter and wall thickness specifications, with thickness adjustable according to requirements. Surface treatment options include pickling, passivation, and anti-corrosion coating. We also provide value-added deep processing services such as cutting, chamfering, pipe bending, and flaw detection, fully complying with customers’ assembly and application standards.

We provide customized post-processing services for pipes, fulfilling customers’ diverse and exclusive needs with a one-stop solution.

Core Product Advantages

Superior Forming Precision: Leveraging high-quality alloy raw materials, advanced rolling mills, and automated production lines, our pipes feature uniform wall thickness and precise inner diameter. Dimensional tolerances strictly adhere to international standards, free from defects such as blowholes, cracks, and laminations, with forming precision far exceeding that of ordinary steel pipes.

Outstanding Mechanical Properties: Scientifically optimized alloy element ratios endow the pipes with excellent mechanical performance, including high tensile strength, yield strength, and impact resistance, enabling them to withstand complex working conditions such as high pressure, high temperature, and low temperature.

Comprehensive Resistance Performance: Combining corrosion resistance, oxidation resistance, and wear resistance, the pipes can effectively resist acid-alkali media, high-temperature oxidation, and mechanical abrasion, significantly extending service life.

Excellent Processing & Welding Compatibility: The pipes can seamlessly integrate with subsequent assembly processes, reducing customers’ processing losses and costs.

Main Application Fields

Our products are widely suitable for high-demand industrial scenarios:

Chemical Industry: High-temperature and high-pressure reactor pipelines, acid-alkali medium transmission pipes

New Energy Industry: Hydraulic pipes for wind power equipment, high-temperature pipe fittings for energy storage power stations

Mechanical Equipment Industry: Transmission pipes for precision machine tools, high-pressure oil pipes for engineering machinery

Oil & Gas Industry: High-pressure pipes for oil and gas transmission, corrosion-resistant pipe fittings for exploration equipment

Automotive Industry: High-end engine exhaust pipes, gearbox oil pipes

Aerospace Supporting Industry: Lightweight and high-strength structural pipe fittings

Rigorous Quality Assurance

We have established a closed-loop full-process quality control system:

Raw Material Inspection: Strict spectral analysis of chemical composition and mechanical property testing are conducted upon raw material arrival to ensure compliance with alloy composition standards.

In-process Monitoring: Real-time monitoring of key parameters such as rolling temperature, pressure, and speed is carried out during production, with simultaneous online flaw detection and wall thickness measurement to promptly correct process deviations.

Finished Product Testing: Comprehensive tests and dimensional accuracy rechecks are performed on finished products, with each batch accompanied by a complete inspection report.

Protective Packaging: Collision and corrosion-resistant packaging is adopted to prevent damage and rust during transportation, ensuring stable and reliable delivery quality.

We offer customized solutions for specifications, surface treatment, and deep processing, providing integrated services from raw material selection, process design, and prototype trial production to mass production. Relying on convenient port and logistics advantages, we achieve fast delivery of global orders. With technology as support and quality as the foundation, we sincerely invite customers from all industries to cooperate with us and build an efficient and durable alloy steel pipe application system.

Customizable Materials by Standards

National Standard (GB)

Low Alloy Steel: 16Mn, Q345 Series, Q355B, Q355C, Q355D, Q355E, Q420, Q460

High Alloy Steel: 20Cr, 40Cr, 15CrMo, 20CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrNiMo, 40CrNiMo, 20CrMoTi, 20Mn2, 40Mn2, 35MnB, 40MnB, 35Mn, 15CrMn, 20CrMn, 20CrMnMo

German Standard (DIN) & European Standard (EN)

Low Alloy Steel: E355, St52, S355JR (1.0045), S355JO (1.0553), S355J2 (1.0577), S355NL (1.0546), S420N/S420NL, S460NL

High Alloy Steel: 20Cr4 (EN 10083-1), 41Cr4 (EN 10083-1), 13CrMo4-5 (EN 10028), 20CrMo4 (ISO 683-18), 25CrMo4 (EN 10083-3), 34CrMo4 (EN 10083-3), 42CrMo4 (EN 10083-3), 20NiCrMo2/20NiCrMoS2 (ISO 683-11), 34CrNiMo6 (EN 10083-3), 20MnCr5 (EN 10084), 22Mn6 (EN 10084), 42Mn6 (EN 10083/1), 42MnB4 (EN 10084), 34MnB5 (EN 10084), 37Mn5 (EN 10083-1), 16MnCr5 (EN 10084), 20MnCr5 (EN 10084), 20CrMo5 (EN 10083-1), 20Cr4 (DIN 17200), 41Cr4/42Cr4 1.17035/1.7045 (DIN 17200), 13CrMo4-4 (DIN 17175), 20CrMo4 (DIN 17210), 1.7220 (DIN 17200), 42CrMo4/1.7225 (DIN 17200), 21NiCrMo2/1.6523 (DIN 17210), 34CrNiMo6/1.6582 (DIN 17210), 20MnCr5/1.7147 (DIN 17210), P355GH (EN 10028), 42Mn6 (EN 10083/1), 42MnB4 (DIN 17210), 34MnB5 (DIN EN 10084), 37Mn5 (DIN EN 10083-1), 16MnCr5 (DIN 17210), 20MnCr5/1.7147 (DIN 17210), 20CrMo5 (DIN 17210)

Japanese Standard (JIS) - High Alloy Steel

SCr22 (JIS G4053), SCr440(H)/SCr440 (JIS G4053), SCM415 (JIS G4105), SCM420 (JIS G4053), SCM430 (JIS G4053), SCM435 (JIS G4053), SCM440 (JIS G4053), SNCM220 (JIS G4103), SNCM439 (JIS G4106), SMnC420H (JIS G4102), SMn420 (JIS G4053), SMn438 (JIS G4053), SMnC420H (JIS G4102)

American Standard (ASTM/SAE)

Low Alloy Steel: Gr50, Gr55, Gr65

High Alloy Steel: 5120, 5140, 4130 (ASTM A29), 4135 (ASTM A29), 4140 (ASTM A29), 8620 (ASTM A29), 4340 (ASTM A29), SAE 5120 (ASTM A29), 1524 (ASTM A29), 1340 (ASTM A29), 15B41 (ASTM A29), SAE 5115 (ASTM A29), SAE 5120 (ASTM A29), SCM23 (JIS G4105)

Product Features

Customizable Pipes: All pipes can be customized to meet diverse customer requirements.

One-stop Deep Processing Service: We provide customized post-processing services for pipes, fulfilling customers’ diverse and exclusive needs in one stop.

Sound Supply Chain: With abundant resources and stable product performance, we help customers reduce procurement costs and improve overall operational efficiency.

High Precision: Pipe dimensional tolerance can be controlled within ±0.05mm, and straightness within 0.5mm/m.

Non-destructive Testing: Ultrasonic eddy current flaw detection is performed according to customer requirements to ensure the quality of each single pipe.

Key Strengths

Complete product supply, one-stop service, customizable solutions, reliable product quality, professional service team