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High Quality Coaxial Tubing Elbows SS316L Ultra High Purity Coaxial Fitting Elbows Stainless Steel BA/EP Ultra-High Purity (UHP) Tubing
Coaxial stainless steel tubing & fittings are designed for delivery of special gas such as volatile or toxic gases. This product is known as Containment tube also, and is called COAX tube and COAX fitting for short sometimes.
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What is Coaxial stainless steel tubing & COAX tube fittings?
Coaxial stainless steel tubing & fittings are designed for delivery of special gas such as volatile or toxic gases. This product is known as Containment tube also, and is called COAX tube and COAX fitting for short sometimes.
Process tubes are supplied with the electropolished surface finish and specifications as our single wall electro polished tube and EP fittings. Our factory has a full range types of coaxial tube fittings (a fitting-within-a-fitting) such as 90-degree elbows, 45° elbows, equal tees, reducing tees and reducers.
* Material: High quality 316L stainless steel, equivalent EN DIN 1.4404; 304L /1.4307 is available on request.
* Size Range: 1/4″ to 4″ on request
* Surface finish:
The inner tube electro polished with roughness Ra 0.25μm；
The outer tube bright annealed with inner roughness Ra 0.6μm.
* Both process tube and safety tube are prepared for orbital welding
Technical Standards
Coaxial Tubes and COAX tube fittings are prepared for orbital welding acc. to the following international standards:
* Coaxial Tubes
acc. to ASTM A 269 / A270 / A 632, DIN EN 10217-7 / 10216-5.
* Coaxial Tube fittings
Pre-material acc. to ASTM A 269 / A 632, DIN EN 10217-7 / 10216-5
Other standards available upon customers’ request.
Materials
Welded or seamless austenitic stainless steel tubes & fittings (for inner process tube and outer safety tube) are available in the following materials:
*1.4404 / UNS S31603 (316L)
*1.4435 / UNS S31603 (316L)
*UNS S31603 (316L)
Quality and Inspection procedures for Coaxial tubing & fittings:
* Visual Inspection
* Endoscopic inspection of bright finished tubes
* Dimensions inspection
* Roughness measurements
* Chemical Analysis: Spectral analysis
* Mechanical properties test
About Us
Wenzhou QiMing Stainless Co., Ltd. was founded in 2015, located in Wenzhou city providing a wide range of stainless steel valves and fittings for food, dairy, beverage,cosmetic, wine industries, semiconductor, LCD,solar energy, lithium technology, photovoltaic and other high-tech industries. mainly manufacture and export SS valves and fittings including Butterfly Valve, Ball Valve, Check Valve, Angle Valve, Vacuum Valves, Tri Clamp Fittings, Weld Fittings,KF/NW flanges, ISO Flanges and CF Flanges. has Mazak CNC, Milling CNC, handheld spectrometer,helium mass spectrometer leak detection, roughness tester and others. With more than 10 years development, QiMing gets 3A certificate and ISO9001:2008. QiMing's main market is Europen, USA, Korea,Japan and so on.
QiMing Market
Our products are exported to many countries, including South Korea, the United States, the United Kingdom, ltaly, France, the Netherlands, Finland, Russia, Belarus, Thailand, CanadaMexico,
Australia, Germany, Spain, Malaysia, Singapore, Vietnam, Indonesia, India, thePhilippines, Japan, Paraguay, Brazil, Chile, Peru, and more.
QiMing Team
Our experienced engineers work closely with each customer to find out the best possible solutions.Our constant technical innovation combined with stringent quality control systems hasenabled us to deliver high performance and outstanding value in sanitary applications.We are dedicated to improving the performance and value of our products, services, and solutions to meet your requirements
Equipment & Testing
QiMing has advanced CNC machieries,CNC centers and Testing Equipment,ISO9000 Certificated and all raw materials are traceablethe ablethe
Certificate
Exhibition
Wenzhou Qiming Stainless Steel Co., Ltd. participated in the Japan Semiconductor Exhibition in November 2023, the Shenzhen Semiconductor Exhibition in June 2024, and the U.S. Semiconductor Exhibition in July 2024. In December 2024, the company attended the Japan Semiconductor Exhibition again and participated in the China Optoelectronics Expo during the same period. It will take part in the China Optoelectronics Expo in September 2025, the U.S. Semiconductor Exhibition in October 2025, and the Japan Semiconductor Exhibition in November 2025.
FAQ
Q: Why would I choose you?
Wenzhou QiMing Stainless Co., Ltd has been engaging in manufacturing sanitary valves, fittings, tank components and pumps for over
15 years, outstanding in production capacity, effective management, accurate lead time, on-time shipments and problems-solving
rate after sales.
Q: May I have free samples before ordering?
Yes, our company is very pleased to send you free samples for quality test as long as freight cost being paid by buyers
themselves.
Q: What's the MOQ?
The majority of products are fully in stock, so we accept 1 piece as the minimum order quantity.
Q: Does your company have the export license?
Yes, we have more than 4 years export experience, we can do FOB, C&F, CIF, DDU and DDP (Russian Only).
Q: What's the payment term?
For small testing orders, we accept Paypal, Western Union, T/T and Credit Card.
For mass orders, we accept T/T and L/C.
Q: How would you minimize damages during delivery?
Standard: mass orders will be packed by many carbon boxes and filled in plywood cases.
Available requirement: blister packing for every piece of product, plastic caps for clamp connected products.
Q: How would you choose the shipment way?
Basically, we will select shipment ways based on four factors (order quantity, delivery time, costs and customs policy), then list
couples of reasonable options with Pros and Cons to customers, letting them to decide.
