PA6 Nylon Tubing
PA6 nylon tubing for fixed pneumatic, oil and fuel lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m or 200 m rolls.
View details →ABOUT YUANNAI TUBE
Pneumatic and industrial tubing, since 2005.
Hefei Yuannai Pneumatic Equipment Co., Ltd. was founded in Shanghai in 2005. Its production base moved to Lujiang, Hefei, Anhui in 2016. Starting with PU tubing, the company expanded into pneumatic, engineering and specialty industrial tubing.
FOUNDED 2005
PRODUCTION BASE: HEFEI, ANHUI
IATF 16949 · ISO 9001 · 14001 · 45001 CERTIFICATES
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AIR PASSAGE is the tubing trademark of Hefei Yuannai Pneumatic Equipment Co., Ltd., presented on this website as YUANNAI TUBE.
OUR STORY
From PU tubing to a broader industrial range
YUANNAI TUBE is the name we use for our international business. AIR PASSAGE is our product trademark, owned by Hefei Yuannai Pneumatic Equipment Co., Ltd.
Our range spans PU, PE, nylon, fluoropolymer and specialty tubing, with standard and custom size options. Product requirements are reviewed against the drawing and the order.
Clear specification before production
Multiple materials, one manufacturing partner
Standard and custom sizes
OUR DEVELOPMENT TIMELINE
2005
Our beginning in Shanghai — we began manufacturing PU tubing.
2016
Relocation to Hefei — we moved our manufacturing base to Hefei, Anhui.
Today
A broader tubing range — multiple materials and specialty tubing, with standard and custom size options.
OUR PORTFOLIO
Materials for different requirements
PA12 Nylon Tubing
PA12 nylon tubing for pneumatic, hydraulic-oil and fuel lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m or 200 m rolls.
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Polyether Tubing
Polyether (ether-based) polyurethane tubing for air, water and cleaning-liquid lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m or 200 m rolls.
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FEP Tubing
FEP fluoropolymer tubing for strong acid, alkali and solvent lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m rolls. Send your medium for review.
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PFA Tubing
PFA fluoropolymer tubing for strong acid, alkali, oxidizing-agent and solvent lines. 14 models from 2.5 x 4 mm to 12 x 16 mm and 1/8″ to 1/2″, in 100 m rolls. Send your medium for review.
View details →Raw materials we work with
Photos of resin and packaging. Brand names on packaging belong to their owners and do not indicate a supplier relationship or the grade used in a specific product.
Selecting tubing for equipment?
Explore application requirements →MANUFACTURING & INSPECTION
From extrusion to documented inspection
Our equipment inventory lists 12 extruders and coiling lines, with in-house mold machining, supported by dimensional inspection and performance-test equipment. Product requirements are reviewed against the drawing and order.
Production equipment
High-temperature fluoropolymer extrusion, single-head and double-head extrusion, and plastic recoil-tubing production lines.
Measurement & testing
Calipers, micrometers and optical measurement, with pressure-hold, burst-pressure, tensile and motion-test equipment listed in the company inventory.
01 / INCOMING
Material & document checks
Check supplier documents, material identity, specification, quantity and packaging. Record inspection results and identify accepted material for traceability.
02 / IN PROCESS
Revision & inspection records
The process procedure defines drawing and route-sheet revision checks, measurement-equipment status, inspection records and segregation of nonconforming items.
03 / FINISHED TUBING
Dimensions, appearance & release
The finished-tubing procedure covers identity, surface and tube-end condition, dimensions, marking, cleanliness and packaging. Performance checks follow drawing and order requirements.
Inspection plans, acceptance criteria and supporting records are confirmed for the specific product and order.
Review quality documentation →OEM & custom tubing projects →Wholesale tubing & bulk purchasing →SUPPLIER INFORMATION
Review the documents behind your selection
Explore our certificates, test reports and product specifications.
Certificates & test reports →Technical guides →Preparing an inquiry →
A management-system certificate describes its certified organization and scope; each tube is matched to its application separately. Review it alongside the exact model documents.
How to start a project discussion
01
Describe the application
Share the medium, pressure, temperature, movement and fitting requirements.
02
Identify the product and dimensions
Choose candidate materials and provide ID, OD, length, quantity and any drawing.
03
Discuss your requirements →Confirm the applicable information
Discuss the selected model, documentation and order requirements with our team before finalising your specification.
Tell us what your application needs.
Send your dimensions, operating conditions and quantity. Let’s identify the right tubing for your project.
Request a Quote →