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Help CenterCustom Length FRP Round Tube 25mm ID 30mm OD High Modulus Low Thermal Conductivity
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Welcome to Hengshui Ruibin New Materials LLC – your trusted manufacturer of high-performance FRP composite solutions. Our Custom Length FRP Round Tube (25mm ID, 30mm OD) is engineered for demanding applications where high modulus and low thermal conductivity are critical. Since 2019, we have delivered over 2.5 million USD in annual exports, serving clients across North America, Europe, Southeast Asia, and beyond. This product combines advanced pultrusion technology with strict quality control to provide a lightweight yet rigid alternative to metal tubes.
Key Features & Technical Specifications
- Custom Length: Available in any length from 0.5m to 12m, cut to your exact requirements – no minimum waste.
- High Modulus: Enhanced fiber orientation delivers superior stiffness-to-weight ratio, ideal for structural reinforcement.
- Low Thermal Conductivity: Typical value < 0.5 W/m·K, effectively reduces heat transfer in thermal barrier applications.
- Corrosion & Chemical Resistance: Withstands harsh environments – perfect for marine, chemical, and outdoor installations.
- Electrical Non-Conductivity: Safe for use in electrical enclosures and insulation spacers.
- Lightweight: Approximately 70% lighter than steel, 30% lighter than aluminum, easing handling and installation.
- UV Resistance: Optional UV-stabilized resin for prolonged outdoor exposure.
| Inner Diameter (ID) | 25 mm (±0.2mm) |
| Outer Diameter (OD) | 30 mm (±0.2mm) |
| Wall Thickness | 2.5 mm |
| Length Range | 0.5 m – 12 m (custom) |
| Specific Gravity | ~1.8 g/cm³ |
| Tensile Modulus | > 40 GPa (high modulus grade) |
| Thermal Conductivity | ≤ 0.5 W/m·K |
Our FRP round tubes are produced using continuous fiberglass roving and thermosetting resin (vinyl ester or polyester) under controlled temperature and pressure. The result is a consistent cross-section with excellent dimensional stability. The low thermal conductivity makes these tubes especially valuable in cryogenic insulation supports, HVAC duct spacers, and building thermal breaks. Additionally, the high modulus ensures minimal deflection under load – a key advantage over standard fiberglass tubes.
Why Choose Hengshui Ruibin New Materials LLC?
- Manufacturing Expertise: Over 5 years of specialized FRP production, with a factory spanning 1,000–3,000 sqm and a skilled team of 101–200 employees.
- Global Reach: Annual export value of US$2.5–5 million, shipped regularly to North America, South America, Europe, Middle East, Africa, Oceania, and Asia.
- Quality Assurance: Each batch undergoes dimensional check, modulus test, and thermal conductivity verification. Custom lengths are cut with precision tolerance of ±1mm.
- Flexible Customization: We offer color matching (RAL codes), surface finish (matte/glossy), and even custom resin formulations for specific temperature or chemical requirements.
- Reliable Logistics: Shipments from Port of Tianjin or Port of Qingdao – we handle FOB, CIF, and door-to-door arrangements.
With decades of combined experience in the composite industry, our team ensures that every tube meets your exact project needs. Whether you need 100 pieces for a pilot run or 10,000 meters for a large infrastructure project, we have the capacity to deliver on time. The low thermal conductivity property has been independently verified by third-party labs, and we can provide test data upon request.
Trust & Reliability: Our Commitment
Since establishing our manufacturing base in Hengshui, Hebei, we have cultivated long-term partnerships with clients in diverse industries – from marine engineering to renewable energy. Our 101–200 dedicated workers follow strict SOPs, and our annual export turnover exceeding US$2.5 million reflects the trust our global customers place in us. We are confident that the Custom Length FRP Round Tube 25mm ID / 30mm OD will exceed your expectations in terms of performance, consistency, and value.
Ready to order or have questions? Contact our sales team today for a competitive quote and free sample (for qualified projects). We look forward to supporting your next application with high-modulus, low-thermal-conductivity FRP solutions.
Frequently Asked Questions (FAQ)
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What is the typical lead time for custom lengths?
For standard lengths (≤6m) and moderate quantities (＜1000 pcs), lead time is 7–10 working days. Larger or extra-long orders may require 15–20 days. We always confirm after order placement. -
Can I get a sample before bulk purchase?
Yes, we provide free samples (1–5 pieces) for customers with valid company registration. Shipping cost is negotiable. Contact us to discuss your sample requirements. -
Is the tube suitable for outdoor use without coating?
Our standard resin provides decent UV resistance, but for prolonged direct sunlight (＞5 years), we recommend adding UV stabilizer (optional) or applying a protective paint. We can advise based on your climate. -
What is the maximum length you can produce?
Our pultrusion line can produce continuous lengths up to 12 meters. Longer lengths are possible by joining, but we typically keep single-piece ≤12m for shipping convenience. -
Does the low thermal conductivity affect mechanical strength?
No. Our high-modulus formulation maintains a tensile modulus > 40 GPa while achieving thermal conductivity ≤ 0.5 W/m·K. Both properties are optimized together, not compromised. -
What payment terms do you accept?
We commonly accept T/T (30% deposit, 70% before shipment) and L/C at sight. For long-term partners, other terms may be discussed. -
Can the tube be painted or bonded easily?
Yes. The surface can be prepared with light sanding and then painted with epoxy or polyurethane. For structural bonding, use compatible adhesives (e.g., methyl methacrylate or epoxy). We can provide recommendations. -
Do you provide technical datasheets or certifications?
Yes, we provide a material test report (MTR) with each shipment, including dimensional check and modulus data. Certifications (e.g., for fire resistance) are available upon request – please specify your required standard when ordering.
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