5140 Precision Seamless Steel Tubes

Product description:

Precision seamless pipe is a type of steel pipe formed by punching through round steel, with no welds on the surface. According to the production method, seamless steel pipes are divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, and hot-expanded seamless steel pipes. Seamless steel pipes are classified into two types based on their cross-sectional shape: circular and special-shaped.

5140 precision seamless steel tubes is a high-quality alloy steel tube made from AISI 5140 (Chromium Steel) through advanced cold drawing or cold rolling processes. Known for its high strength, excellent toughness, and superior wear resistance, this precision tube is widely used in mechanical engineering, automotive, hydraulic, and industrial machinery applications where precision and reliability are essential.

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Material Overview

AISI 5140 steel, also referred to as 41Cr4 or SCM440, is a medium carbon chromium alloy steel containing approximately 0.40% carbon and 0.9–1.2% chromium. The chromium element enhances hardenability, wear resistance, and strength, while maintaining good toughness and impact resistance. After proper heat treatment, 5140 steel exhibits outstanding mechanical performance, making it ideal for manufacturing precision mechanical parts, shafts, and structural components.

Manufacturing Process

• Cold drawing or cold rolling: Reduces diameter and wall thickness with high precision.
• Heat treatment: Normalizing or annealing to relieve internal stress and enhance ductility.
• Straightening and sizing: Ensures roundness, concentricity, and uniform wall thickness.
• Surface finishing: Produces bright, polished, or phosphated finishes for improved corrosion resistance.
• The result is a precision seamless steel tube with tight dimensional tolerances, superior strength, and a smooth inner and outer surface.

Features

• High dimensional accuracy: OD tolerance as small as ±0.05 mm.
• Superior mechanical properties: Excellent tensile and yield strength for heavy-duty applications.
• Good wear and fatigue resistance: Suitable for dynamic and high-load conditions.
• Excellent machinability: Easy to cut, drill, and thread after heat treatment.
• Smooth surface finish: Ideal for hydraulic and pneumatic systems.
• Customizable specifications: Available in multiple sizes, lengths, and surface finishes.

Application

• Automotive industry: Axles, drive shafts, steering systems, and transmission components.
• Mechanical engineering: Machine tool spindles, gears, rollers, and precision shafts.
• Hydraulic systems: hydraulic cylinders, pressure lines, and mechanical actuators.
• Construction and mining machinery: Structural tubes, lifting arms, and mechanical joints.
• Energy and industrial equipment: Power transmission components and support structures.

Why us?

We focus on the research, development, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders. We have a complete production chain and an advanced equipment system, including piercing machines, cold drawing machines, hot rolling machines, high-precision flaw detection and testing equipment. The company has passed multiple authoritative certifications such as ISO9001, API, SGS, CCS, DNV, ABS, CE, RoHS, etc., ensuring that each product complies with international standards. We are committed to providing customers with high-quality, customizable solutions to meet diverse application needs.

Relying on our own built processing base and modern workshops, combined with multiple branches and storage centers across the country, we have achieved sufficient inventory and efficient logistics coordination, significantly shortening the delivery cycle and ensuring the rapid delivery of orders.

We have established a complete service and support system. After the order is signed, the professional after-sales team can provide timely and safe on-site guidance and technical support to ensure that customers are at ease throughout the process from procurement to use.

FAQ:

1. Do you support customized design and production?

Sure. We have a professional engineering team that can conduct customized design and production with special sizes, control systems or OEM according to your requirements.

2. How fast can you deliver?

In stock sizes, it takes 3-5 days. For customized sizes, it takes 30-35 days.

3. What payment methods do you support?

We support TT payment. Generally, 30% to 50% of the payment is made in advance, and the remaining amount is paid before shipment.

4. Can you provide material certification (MTC)?

Yes, we will provide MTC to you after production is completed to ensure that the material quality meets the standards.

5. What is the minimum order quantity?

Generally, we accept trial orders. The minimum order quantity is 1-3 tons, which can be determined according to different products.

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