--- title: "Pneumatic and industrial tubing, since 2005." canonical: "https://yuannaitube.com/about/" language: "en-US" --- 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 [Request a quote]() [Explore industrial tubing →]() - [YouTube]() - [Facebook]() - [LinkedIn]() - [X]() LinkedIn and X connect you with our contact person. ![Office entrance and company values wall at YUANNAI TUBE]() AIR PASSAGE is the tubing trademark of Hefei Yuannai Pneumatic Equipment Co., Ltd., presented on this website as YUANNAI TUBE. [2005 Founded in Shanghai, starting with PU tubing]() [2016 Production base moved to Lujiang, Hefei, Anhui]() [11 Tubing product families across PU, PE, nylon, fluoropolymer and specialty materials]() [4 Management-system certificates listed with original documents]() 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 ![PA6 Nylon Tubing]() [PA6]() ### 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 →]() ![PA12 Nylon Tubing]() [PA12]() ### 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. [View details →]() ![Polyether Tubing]() [Polyether PU]() ### 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. [View details →]() ![FEP Tubing]() [FEP]() ### 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. [View details →]() ![PFA Tubing]() [PFA]() ### 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. [![White resin pellets held in gloved hands]()]() [![Wanhua WANAMID polyamide 12 resin bag]()]() [![Stacked Wanhua WANAMID PA12 resin bags]()]() [![BASF plastic resin bag]()]() [![Stacked BASF plastic resin bags]()]() [![White resin pellets in a metal scoop]()]() [![BASF Elastollan resin bag]()]() [![Stacked BASF Elastollan resin bags]()]() [![Chemours PFA fluoroplastic resin bag marked 451HP X]()]() [![Clear resin pellets on a white surface]()]() [![Bangtai resin bag]()]() [![Stacked Bangtai resin bags]()]() [![Translucent resin pellets held in gloved hands]()]() [![Translucent PE resin pellets in a metal scoop]()]() [View all product families →]() 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. ![Tubing production equipment on the factory floor]() ### Measurement & testing Calipers, micrometers and optical measurement, with pressure-hold, burst-pressure, tensile and motion-test equipment listed in the company inventory. ![View into the testing room through the observation window]() 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 →]() [![IATF 16949:2016 certificate]() IATF 16949:2016]() [![ISO 9001:2015 certificate]() ISO 9001:2015]() [![ISO 14001:2015 certificate]() ISO 14001:2015]() [![ISO 45001:2018 certificate]() ISO 45001:2018]() 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 ### Confirm the applicable information Discuss the selected model, documentation and order requirements with our team before finalising your specification. [Discuss your requirements →]() ## 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 →]()