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Corrugated Tubing

Introduction

Corrugated tubing is the go-to solution for protecting wires and wire harnesses, widely used in automation, automotive, and industrial wiring applications.
Its corrugated wall structure delivers high flexibility combined with crush resistance. Choose from Nylon (PA) or PP polypropylene for standard environments, or opt for galvanized steel flexible conduit when high-temperature, chemical exposure, or EMI shielding is required.
Good Gi corrugated tubing is manufactured in Taiwan with a full range of tooling sizes. Custom cut-to-length, split, and packaging services are available. All products comply with international certifications including RoHS, UL, and FMVSS — making Good Gi the trusted B2B sourcing partner for quality-focused procurement teams.

Photo Product Name Material Operating Temp. Flame Rating
product Polyamide(Nylon) Corrugated Tubing
GPA
 Polyamide 6 (PA6) / Nylon 6 -10℃~120℃ VW-1
product Polyamide(Nylon) Convoluted Tubing
GPA-X
 Polyamide Nylon6 -10℃~120℃ VW-1
product Polypropylene Corrugated Tubing
GR
 Polypropylene -40℃~125℃ 94V-0
product Acid and Alkali Resistant Polypropylene Corrugated Tubing
GRX-AA
 Acid & Alkali Resistant Plastic -40℃~125℃ 94V-0
product Polypropylene Corrugated Conduits
GR-X
 Polypropylene -40℃~125℃ 94V-0
Photo Product Name Material Type Outer layer
product Doublelocked Galvanized Steel Flexible Conduit
T02
 Galvanized steel strip Doublelocked -
product Squarelocked Galvanized Steel Flexible Conduit
T01
 Galvanized steel strip Square-Locked -
product Waterproof Liquid Tight Flexible Conduit
TP01
 Galvanized steel strip Doublelocked PVC
Photo Product Name Flame Rating Material Operating Temp.
product Acid-alkali Resistant Polypropylene Cable Ties
1ZPP01TST
 UL94V-2 Polypropylene -40～85℃
product Acid-alkali Resistant Cable Tie Mount
1ZPPKHC
 UL94V-2 Polypropylene -
Photo Product Name Product Usage
product Multi-axis Mounting Bracket (for 3D Cable Chains)
GRGTFW
 Secures the cable carrier end and guides cables, improving stability and durability.
product Multi-axis Side-opening Cable Carrier
GRGTL
 Side-open design enables easy installation and maintenance, delivering flexible and reliable cable protection.
product Industrial Flame-Retardant Waterproof Junction Box - Bolt-Fix Type
WBX
 Engineering-grade injection-moulded waterproof enclosure, IP67 rated, PC/ABS/flame-retardant material options, bolt-fix sealed, UL/RoHS/CE certified.

PP Corrugated Tubing Manufacturing Process — EV Orange Grade

A full production walkthrough of Good Gi PP polypropylene corrugated tubing — from raw material extrusion to finished tube — so you can see Taiwan-made quality standards firsthand.

Source: Good Gi Co., Ltd. Official YouTube Channel

Key Features

  • International Certifications: Compliant with RoHS, UL VW-1, UL 94V-0, and FMVSS, meeting export and brand compliance requirements across global markets.

  • Impact & Heat Resistance: Plastic grades rated −40 °C to 125 °C; metal flexible conduit handles extreme heat and electromagnetic interference.

  • High Flexibility: Corrugated walls allow free bending in any direction — ideal for complex routing paths and tight installation spaces.

  • Multiple Material Options: Nylon (PA), PP polypropylene, chemical-resistant grades, and galvanized metal flexible conduit — one supplier for every operating environment.

  • Taiwan-Manufactured: In-house tooling and quality control ensure consistent lead times and support for high-volume custom orders.

  • Complete Processing Services: Cut-to-length, longitudinal slitting, and custom packaging reduce downstream prep work and total procurement cost.

Application Areas

  • Semiconductor & Electronics Equipment: Protects precision harnesses in cleanrooms and high-accuracy machinery. RoHS compliance is mandatory; Nylon (PA) corrugated tubing (UL VW-1 flame-rated) is the primary choice.

  • Energy & Power Equipment: Used in power control panels, new-energy systems, and power unit wiring — where heat resistance and chemical durability are critical. PP or metal conduit selected by environment.

  • Automation & Machine Tools: Shields internal wire harnesses against repeated flexing and elevated temperatures, extending harness service life.

  • Automotive Wiring & Electrical Insulation: FMVSS-compliant grades widely used in engine compartment, door, and dashboard harness protection.

  • Construction & Outdoor Wiring: High protection ratings suit underground conduit runs and outdoor exposed installations — dust-proof, moisture-resistant, and weather-durable.

  • Chemical Industry & Harsh Environments: Chemical-resistant PP grades withstand acid and alkali exposure, keeping precision circuits stable in aggressive industrial environments.

Recommended Corrugated Tube Cutting Machines

LL-150 Digital Corrugated Tube Cutter - Compact desktop design, wide cutting range, high precision, optimized for length-only cutting.

LL-150 Digital Corrugated Tube Cutter

Compact desktop design with a wide cutting range and high precision — optimized for length-only cutting.

LL-180 Corrugated Tube Slitting & Cutting Machine - Floor-standing, supports cut-to-length and longitudinal slitting. Pairs with an auto-feed module for a fully automated high-volume cutting system.

LL-180 Corrugated Tube Slitting & Cutting Machine

Floor-standing unit with cut-to-length and longitudinal slitting. Pairs with an auto-feed module to build a fully automated high-volume cutting system.

Frequently Asked Questions

Q: Nylon (PA) vs. PP Corrugated Tubing — Which Should I Choose?

A: Nylon (PA) — rated −10 °C to 120 °C, UL VW-1 flame-rated — is suited for high-temperature equipment and applications requiring North American UL certification. PP (−40 °C to 125 °C, UL 94V-0) offers better chemical resistance at a lower cost — ideal for automotive wiring and chemical plant environments. Rule of thumb: UL certification or high heat → choose Nylon (PA); low-temperature tolerance or cost control → choose PP. For a full side-by-side comparison, see Nylon (PA) vs. PP Corrugated Tubing — Material Comparison Guide.

Q: How Do I Select the Right Corrugated Tube Size?

A: The basic rule: the wire harness OD should not exceed 60–70% of the tube's inner diameter. Divide the harness OD by 0.65 to get the minimum recommended ID (example: 12 mm harness OD → choose ID ≥ 19 mm), then pick the nearest standard size from the supplier's catalog. If you anticipate adding cables later, go one size up. For a complete sizing walkthrough, see How to Select the Right Corrugated Tube Size and Specifications.

Q: What Do UL and RoHS Certifications Mean for Corrugated Tubing Procurement?

A: UL VW-1 is a vertical flame test; UL 94V-0 requires self-extinguishing within 10 seconds — both are the flame-retardancy thresholds for entering the North American market. RoHS restricts 10 hazardous substances including lead, mercury, and cadmium, and is a legal requirement for exporting to the EU. The two systems are independent — confirm your target market first, then require the supplier to provide valid certification reports for each standard. For a real-world application example, see UL-Certified Nylon Corrugated Tubing Applied in Automation Control Panels.

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