S35 Hexagonal Pipe

The S35 hexagonal pipe is a high-quality carbon steel pipe with a distinctive six-sided cross-sectional shape, designed for applications requiring strength, precision, and aesthetic geometry. Made from S35 structural steel, it combines high tensile strength, excellent machinability, and uniform hardness—making it ideal for use in mechanical structures, automotive components, hydraulic systems, and precision machinery.

Unlike conventional round pipes, hexagonal pipes provide improved torque resistance, easy gripping surfaces, and aesthetic symmetry, which make them highly functional in both industrial and architectural applications.

Hexagonal tubes are also known as Hexagonal steel pipes. They are Special-shaped steel pipes with a hexagonal cross-section, made from steel. They are mainly divided into welded type and seamless type. The materials include carbon steel and stainless steel models such as 304. They belong to the branch of special-shaped steel pipes and the series of products include octagonal pipes, rhombic pipes, elliptical pipes, etc., totaling over ten types of cross-sectional shapes. This pipe material is widely used in mechanical parts, building structures, automobile and ship manufacturing, etc., covering specifications ranging from 12.7 to 400mm in cross-sectional size and 0.6 to 20mm in wall thickness.

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Material Overview: S35 Steel

The S35 steel grade, classified as a medium carbon structural steel, is known for its good balance of strength, ductility, and weldability. The typical chemical composition includes:

• Carbon (C): 0.32–0.38%
• Manganese (Mn): 0.60–0.90%
• Silicon (Si): 0.15–0.35%
• Sulfur (S) & Phosphorus (P): ≤ 0.035%

This composition provides excellent mechanical properties after heat treatment, such as high tensile strength (≥600 MPa) and good toughness, making it suitable for demanding mechanical environments.

Manufacturing Process

The production of S35 hexagonal pipe involves advanced forming and heat-treatment processes to ensure dimensional precision and structural integrity:

• Raw Material Selection: High-quality S35 carbon steel billets or seamless tubes.
• Hot Rolling or Cold Drawing: Forms the basic pipe structure with uniform wall thickness.
• Hexagonal Shaping: Pipes are precisely shaped through rolling, extrusion, or drawing dies to achieve accurate hexagonal dimensions.
• Heat Treatment: Normalizing or annealing to relieve stress and enhance toughness.
• Surface Finishing: Pickling, polishing, or black oxide coating to improve appearance and corrosion resistance.
• Dimensional Inspection: Ensures accurate side width, corner angle, and straightness.

Key Features and Advantages

• High Strength: Medium carbon steel composition ensures strong load-bearing capacity.
• Excellent Machinability: Easy to cut, drill, and thread for custom applications.
• Uniform Hexagonal Shape: Provides consistent size for precise mechanical assembly.
• Good Weldability: Can be joined by standard welding methods.
• Corrosion and Wear Resistance: Optional coatings enhance performance in harsh environments.
• High Dimensional Precision: Cold-drawn or cold-finished versions meet tight tolerance requirements.
• Aesthetic Appearance: Ideal for both functional and architectural uses.

Applications:

The S35 hexagonal pipe is used in a wide variety of industries due to its combination of strength, precision, and versatility. Common applications include:

• Mechanical Engineering: Shafts, sleeves, spacers, fasteners, and couplings.
• Automotive Industry: Drive components, steering rods, and transmission shafts.
• Hydraulic and Pneumatic Systems: Tubing for oil, air, and fluid transfer requiring torque resistance.
• Construction and Architecture: Structural frames, decorative columns, and railings.
• Machinery and Equipment: Hexagonal connectors, supports, and tools.
• Precision Parts: Used in manufacturing of nuts, bolts, and custom-shaped fittings.
• Its six-sided design makes it ideal for rotational motion transmission, mechanical fastening, and structural reinforcement in compact assemblies.

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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.