Iso-Cross Tube

Overview of Iso-Cross Tube​

Sikerui Iso-Cross Tube​ is an advanced composite tubular structure engineered with a proprietary geometric design​ featuring interlocking isosceles triangles arranged in a cross-grid pattern, optimized for high strength-to-weight ratios and exceptional multidirectional load distribution . Manufactured from composite materials such as carbon fiber-reinforced polymers (CFRP), fiberglass, or specialty alloys, this component achieves superior stiffness and durability while minimizing mass . Its open-web architecture reduces material usage by up to 40% compared to solid tubes, without compromising structural integrity, making it ideal for applications where weight savings and resistance to dynamic stresses are critical .

Designed to meet international standards including ISO 9001, ASME, and ASTM, Iso-Cross Tubes operate effectively across temperatures from -50°C to 200°C and withstand pressures up to 5,000 PSI, depending on material selection and wall thickness . Available in diameters from 10 mm to 600 mm, with custom sizes tailored for aerospace, automotive, and industrial systems, these tubes are compatible with bonding, mechanical fastening, or thermal fusion installation methods . Typical applications include lightweight trusses, robotic arms, energy absorption systems, and high-performance sporting goods, with a service life exceeding 20 years under standard conditions .

Key Features of Iso-Cross Tube​

1. High Strength-to-Weight Ratio​
   The triangular grid configuration​ maximizes load-bearing capacity while reducing weight by 30–50% compared to solid or conventional tubular structures . This design efficiently distributes axial, torsional, and bending stresses, preventing localized failures in demanding environments such as aerospace frame assemblies or automotive chassis reinforcements .
2. Customizable Geometry and Materials​
   Iso-Cross Tubes can be fabricated with variable node spacing, wall thickness, and fiber orientation​ to match specific mechanical requirements . Materials range from carbon fiber for maximum strength and corrosion resistance to fiberglass for cost-sensitive applications, with optional coatings (e.g., epoxy, polyurethane) for enhanced UV or chemical resistance .
3. Vibration Damping and Fatigue Resistance​
   The repetitive triangular cells dissipate energy​ from vibrations and cyclic loads, reducing stress concentration and extending service life in dynamic systems like wind turbine blades or machinery linkages . Fatigue testing shows a 60% higher cycle tolerance versus solid tubes under equivalent loads .
4. Thermal and Electrical Insulation​
   Composite materials provide low thermal conductivity​ (0.5–5 W/m·K) and electrical non-conductivity, making these tubes suitable for insulating components in electronic enclosures, power transmission systems, or HVAC ducting .
5. Eco-Efficient Manufacturing​
   The open-web structure requires less raw material, reducing production waste and life-cycle carbon footprint . Automated filament winding or braiding processes enable high precision and repeatability for large-scale orders .

Typical Applications​

• Aerospace and UAVs: Fuselage trusses and wing spars requiring lightweight rigidity​ and resistance to aerodynamic forces .
• Robotics and Automation: Articulated arms and conveyor guides where low inertia and high precision​ are critical .
• Sports Equipment: Bicycle frames and archery bows leveraging enhanced energy return​ and impact absorption .
• Industrial Scaffolding: Modular platforms offering quick assembly​ and corrosion resistance in harsh plants .

Technical Specifications​

Table: Standard Iso-Cross Tube Specifications

SIZE	Number	D1	d1	D2	d2	L	I	H1	H2
DN80x40	YS80x40	105.15	90.55	60.25	50.45	51.5	31.5	154.6	154.5
DN80x50	YS80x50	105.15	90.55	75.9	43.5	51.5	38	166.8	167
DN100x40	YS100x40	127.39	110.6	60.25	50.45	61.5	31.5	174	174
DN100x50	YS100x50	127.39	110.6	75.9	63.5	61.5	38	186.8	187
DN125x40	YS125x40	161.4	140.6	60.25	50.45	76	31.5	205	204.9
DN125x50	YS125x50	161.4	140.6	75.9	63.5	76	38	218	218
DN125x65	YS125x65	161.4	140.6	88.91	75.5	76	44	230	230
DN150x50	YS150x50	184.5	160.7	75.9	63.5	86.5	38	238.6	238.8
DN150x100	YS150x100	184.5	160.7	127.39	110.6	86.5	61.5	285.8	286

Frequently Asked Questions (FAQs)​

Q1: How does the Iso-Cross Tube compare to traditional solid tubes?​

Iso-Cross Tubes provide equivalent strength with lower mass​ due to their triangulated design, which eliminates redundant material while maintaining load paths . Solid tubes are more prone to buckling under torsion and compression .

Q2: Can these tubes be repaired or modified in the field?​

Yes, damaged sections can be cut and spliced​ using composite bonding kits or mechanical sleeves . However, critical applications (e.g., aerospace) may require factory-level repair to ensure integrity .

Q3: What certifications support quality claims?​

Manufacturers supply test reports for tensile strength, fatigue, and environmental resistance​ per ASTM/ISO standards, with optional NDT (ultrasonic/X-ray) inspection for high-stress applications .