Cold Drawn Precision Carbon Steel Seamless Conveying Tube Smooth Inner Wall Small Bore Fluid Transport Pipe

Cold Drawn Precision Carbon Steel Seamless Conveying Tube Smooth Inner Wall Small Bore Fluid Transport Pipe

Production Descripition:

Adopting advanced cold drawn finishing technology, this carbon steel seamless conveying tube achieves tight dimensional tolerance and mirror-smooth inner and outer surfaces. The smooth inner wall effectively reduces fluid flow loss and dirt adhesion, ideal for small-bore precision equipment internal medium delivery, instrument pipeline and small circulation pipeline systems. Custom small batch sizes and special length processing services are acceptable.

Parameters:

Material Overview

E355B steel is a non-alloy structural grade designed for applications requiring high yield strength, good machinability, and excellent weldability. It provides consistent performance under dynamic and heavy-load conditions, making it ideal for conveyor pipe systems that demand both toughness and dimensional accuracy.

Standard: EN 10305-1 / EN 10297-1

Grade designation: E355B (1.0580)

Delivery condition: +C (cold drawn), +SR (stress relieved), or +N (normalized)

Chemical Composition

• ElementContent (%)
• Carbon (C)≤ 0.22
• Manganese (Mn)0.50 – 1.60
• Silicon (Si)≤ 0.55
• Phosphorus (P)≤ 0.025
• Sulfur (S)≤ 0.025

This balanced chemical structure ensures excellent strength, weldability, and machinability while maintaining impact resistance and fatigue endurance—essential for continuous conveyor operation.

Mechanical Properties

• Yield strength: ≥ 355 MPa
• Tensile strength: 490 – 630 MPa
• Elongation: ≥ 22%
• Impact energy (Charpy V-notch, 20°C): ≥ 27 J

These properties make E355B Conveyor Pipe suitable for high-load and vibration-intensive conveying systems, ensuring long service life and

operational stability.

Advantages :

• High Strength & Toughness: Capable of withstanding continuous mechanical stress and dynamic load in conveyor operations.
• Excellent Weldability: Low carbon equivalent enables easy welding by arc, MIG, or TIG methods without preheating.
• Smooth Internal Surface: Reduces friction during material transport, improving conveying efficiency.
• Good Dimensional Accuracy: Tight tolerance and consistent wall thickness ensure stable mechanical performance and assembly precision.
• Corrosion-Resistant Options: Can be supplied with anti-corrosion coatings such as hot-dip galvanizing, epoxy painting, or powder coating for enhanced durability.

Application:

• Bulk material conveyor systems in mining, cement, and chemical industries
• Roller conveyor structures and support frameworks
• Industrial mechanical parts, such as shafts and axles
• Hydraulic and pneumatic cylinders
• Transport pipelines for powder, ore, or coal 
• ​Its combination of strength and flexibility allows reliable performance in both stationary and mobile conveyor

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Pictures:

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.

Certification:

Packaging and Transportation: