Light Green Flame Retardant Fr4 Tube, Brown Alternative for Design-Sensitive Apps, Global Shipping

Product Description

Product Introduction

FR4 Fiberglass Tube – High-Performance Electrical Insulation Solution

The FR4 fiberglass tube is a premium-grade composite material made from woven glass fiber cloth impregnated with flame-retardant epoxy resin. Renowned for its excellent mechanical strength, dimensional stability, and superior electrical insulation properties, this tube is ideal for demanding applications in electronics, electrical engineering, aerospace, automation equipment, and industrial machinery. Its high heat resistance and chemical inertness make it a reliable choice in harsh operating environments.

Product Specifications

Parameter	Specification
Material	Epoxy resin + Woven glass fiber (FR4 grade)
Color	Natural amber/brown (standard); custom colors available
Outer Diameter (OD)	5 mm – 200 mm (customizable)
Inner Diameter (ID)	2 mm – 190 mm (wall thickness: 1.5 mm – 10 mm)
Standard Length	1000 mm (cut-to-length service available)
Operating Temperature	-40°C to +140°C (short-term up to 180°C)
Tensile Strength	≥350 MPa
Flexural Strength	≥400 MPa
Volume Resistivity	>1.0 × 10¹³ Ω·cm
Surface Resistivity	>1.0 × 10¹³ Ω/sq
Flame Rating	UL94 V-0 (inherent flame retardancy)
Moisture Absorption	<0.2% (24 hrs immersion)
Machinability	Excellent – can be drilled, milled, turned, and tapped

Note: All dimensions and tolerances can be customized per customer drawings or requirements.

Product Advantages & Manufacturer Strengths

Key Product Advantages
  → Superior Electrical Insulation: Ideal for high-voltage components and insulating sleeves.
  → High Mechanical Strength: Maintains structural integrity under load and vibration.
  → Thermal Stability: Performs reliably across wide temperature ranges without warping.
  → Chemical Resistance: Resists oils, solvents, acids, and alkalis commonly found in industrial settings.
  → Dimensional Accuracy: Low moisture absorption ensures consistent size and shape over time.
  → asy to Machine: Compatible with standard metalworking tools for precision fabrication.
Why Choose Youda Insulation Materials Co., Ltd.?
  → 35+ Years of Manufacturing Expertise: Specializing in high-performance FR4 laminates and tubes.
  → In-House R&D & QC Lab: Ensures consistent quality and rapid prototyping capability.
  → Customization Support: From small-batch prototypes to large-volume production, we tailor solutions to your exact specs.
  → Global Export Experience: Products shipped to Europe, North America, Southeast Asia, and beyond.
  → Responsive Technical Service: Dedicated engineers provide material selection and application guidance.

Product Showcase

Product Components

Product Applications

Company Introduction

FAQ

Q1: What is the maximum continuous operating temperature of FR4 fiberglass tubes?
A: The standard FR4 tube can operate continuously at temperatures up to 140°C (284°F). Short-term exposure up to 180°C is acceptable, but prolonged use above 140°C may affect long-term mechanical and electrical performance.

Q2: Can FR4 tubes be machined using standard metalworking tools?
A: Yes. FR4 fiberglass tubes can be easily cut, drilled, milled, turned, and tapped using carbide-tipped or diamond-coated tools. We recommend using dust extraction during machining due to fine particulate generation.

Q3: What are the most common applications for FR4 tubes?
A: Typical uses include:

  ·  Insulating bushings and spacers in transformers and switchgear
  ·  Structural supports in PCB test fixtures
  ·  Coil bobbins and motor insulation sleeves
  ·  Robotic arms and automation jigs requiring non-conductive, rigid components
  ·  Aerospace and rail transit insulating components

Q4: How do I select the right wall thickness and diameter for my project?
A: The choice depends on your mechanical load, voltage rating, and space constraints. Thicker walls offer higher dielectric strength and rigidity, while thinner walls save weight and cost. Our engineering team can help you optimize dimensions based on your application—just share your design requirements!

Q5: Are FR4 tubes suitable for outdoor or humid environments?
A: Yes. FR4 has very low moisture absorption (<0.2%), making it stable in humid conditions. However, for prolonged outdoor exposure to UV radiation, we recommend protective coatings or alternative materials like GPO-3 if UV degradation is a concern.

Q6: Do you offer samples before bulk ordering?
A: Absolutely. We provide free or low-cost samples (shipping may apply) so you can evaluate material quality, color, and machinability before placing a full order.

Q7: What is the typical lead time for custom-sized FR4 tubes?
A: Standard sizes: 3–7 days. Custom diameters, lengths, or tight-tolerance machining: 10–15 working days, depending on complexity and volume. Expedited production is available upon request.