high purity weld fittings

Beyond Fluid, Ultra High Purity Weld Fittings Manufacturer in China

For over 15 years, we have been a trusted supplier of ultra clean tube weld fittings to wholesalers, distributors, and large contractors worldwide. Our mission is to solve your supply challenges and help expand your market share. Partner with Beyond Fluid to achieve lasting business success.

Leading Supplier of Ultra High Purity Tube Weld Fittings in China

Ultra High Purity (UHP) weld fittings are precision components used in industries like semiconductors, pharmaceuticals, and biotechnology, where cleanliness is critical.
 
Made from high-grade stainless steel, these fittings feature smooth, electropolished surfaces to minimize contamination and particle formation. They are connected using orbital welding, creating crevice-free, leak-tight seals that ensure the integrity of the system.
 
Beyond Fluid supply UHP weld fittings are designed to handle ultra-clean gases or fluids, making them essential in environments where even minor impurities can compromise product quality, such as in drug manufacturing, chip production, and other high-purity applications.

Specifications:

  • Technical: Forged/Bar Stock
  • Type: micro weld, butt weld
  • Material: SS316L, 316LVAR
  • Size: 1/8″-1/2″/6-12mm
  • Surface Grade: BA, EP
  • Body Type: straight, elbow, tee, cross
  • Proof Pressure: 5,000 PSI
  • Burst Pressure: 10,000 PSI
  • Working Temperature: -198°C (-325°F) to 538°C (1000°F)
  • Options of Cleaning and Packaging: standard, high purity and ultra-high purity
  • Application: semiconductors, aerospace, and pharmaceuticals.

Hot-Selling High Purity Weld Fittings Types

UHP weld reducing union​
weld reducing union

Design: compact design | Shape: straight reducer | Connection: weld | Size: 1/8" to 1/2" | Material: SS304, SS316/316L, SS316 VAR

UHP 90 Degree Weld Elbow
90 degree weld elbow union

Design: extended tube design | Shape: 90° Elbow | Connection: weld | Size: 1/8" to 1/2" | Material: SS304, SS316/316L, SS316 VAR

3 way weld Tee union​
3 way weld Tee union

Design: extended tube design | Shape: tee | Connection: weld to weld to weld | Size: 1/8" to 1/2" | Material: SS304, SS316/316L, SS316 VAR

Micro weld reduce union​
Micro weld reduce union

Design: extended tube design | Shape: 90° Elbow | Connection: weld | Size: 1/8" to 1/2" | Material: SS304, SS316/316L, SS316 VAR

micro 90 degree weld elbow​
micro 90 degree weld elbow

Design: compact design | Shape: 90° Elbow | Connection: weld | Size: 1/8" to 1/2" | Material: SS304, SS316/316L, SS316 VAR

micro weld tee union​
micro weld tee union

Design: compact design | Shape: Tee | Connection: weld to weld to weld | Size: 1/8" to 1" | Material: SS304, SS316/316L, SS316 VAR

Features of UHP Weld Fittings

  • High-Purity Material: Manufactured from 316L stainless steel with ultra-low sulfur content for superior corrosion resistance and complete heat number traceability.
  • Ultra-Smooth Finish: Electropolished interior surfaces with Ra ≤ 0.25 μm and passivated for maximum cleanliness and minimal particle generation.
  • Precision Weld Ends: Designed for orbital welding with consistent dimensions, chamfered ends, and tight tolerances to ensure repeatable, high-quality welds.
  • Cleanroom Ready: Produced, handled, and double-bagged in ISO Class 4–5 cleanroom environments to maintain ultra-high purity standards.
  • High Integrity: Helium leak tested to ≤ 1×10⁻⁹ atm·cc/sec and compliant with ASME BPE and SEMI specifications for leak-tight performance.
  • Permanent Marking: Laser-etched identification including size, material, and heat code without introducing contaminants.

Applications of UHP Weld Fittings

  • Semiconductor Manufacturing: Ultra-clean gas and chemical delivery systems for chip fabrication.
  • Pharmaceutical & Biotechnology: Sterile process piping for drug, vaccine, and biologics production.
  • Food & Beverage Processing: High-purity piping systems for sensitive liquid and ingredient handling.
  • Laboratory & Research Facilities: Distribution of ultra-pure water and specialty gases.
  • Solar & LED Fabrication: Contamination-free chemical and fluid transport lines.
  • Aerospace & Specialty Industries: Precision gas and liquid handling in mission-critical systems.
teemicro weld tee union​

Technical Support

At Beyond Fluid, we pride ourselves on our comprehensive expertise in engineering and designing UHP weld fittings. From the initial concept to the final product, our team is equipped to transform your ideas into tangible, high-quality fluid and control solutions. Our commitment to innovation ensures that we deliver not just products, but value-driven solutions tailored to your needs.

  • Tailored Solutions
  • Techical Support
  • Free Drawings Service

Who We Are

Beyond Fluid, Your Reliable Ultra High Purity Weld Fittings Manufacturer

Beyond Fluid has over 15 years of experience supplying stainless steel weld fittings to wholesalers, distributors, and large contractors. We offer reliable quality, excellent service, on-time delivery, and competitive prices. Our commitment to advanced technology, precision engineering, and strict quality standards ensures we meet the diverse needs of customers worldwide.

We take pride in producing high-quality high clean weld fittings. Our comprehensive range of products is designed for optimal performance and durability, with both standard and customized solutions. Serving industries from from semiconductors, biotechnology to aerospace, we aim to be your long-term trusted partner to expand your market presence.

Close up of CNC machine

15+

Years of Experience

Why Choose Us

Reliability. Consistency. Integrity

Quality Assurance

When you choose Beyond Fluid, you ensure precision and reliability, backed by our strict Quality Assurance Program.

on-time delivery

Beyond Fluid ensures reliability with a 99.99% on-time delivery rate and quick response to urgent orders through stocked materials.

Competitive pricing

Our robust manufacturing and supply chain enable us to offer competitive prices, helping clients expand their market reach.

professional service

Our expert engineers offer design, CAD, and technical support, while our trained sales team ensures fast, efficient 24-hour responses.

Testimonials

What Our Clients Say

Thank you for your cooperation!
A Large Wholesaler From USA

 “We’re literally satisfied with Beyond Fluid’ always on-time delivery and exceptional handling of requests. Their commitment to timely service is evident and consistently reliable. Their swift response and guaranteed on-time delivery make them my preferred choice.”

A Brand Manufacturer From Germany

“We can always count on Beyond Fluid’s quality. During a 2018 visit, their advanced facilities and stringent quality controls made a lasting impression on us. Their timely responses to requests for drawings or technical support further solidify my trust. We really love to place our orders to those suppliers like Beyond Fluid.”

FAQ

Frequently Asked Questions.

Here are a few real most popluar questions from our clients.

We manufacture a wide range of stainless steel ultra high purity weld fittings, including micro weld fititngs and butt weld fittings. All our products meet industry standards for high purity and durability.

Yes, Beyond Fluid's ultra high purity valves and fittings are fully compatible with other big brands, like Swagelok and can be easily integrated into existing systems, offering customers flexibility and ease of use.

We utilize advanced manufacturing processes and precision engineering techniques, subjecting each product to thorough testing to meet stringent industry standards.

Sure, we offer customization options, and our expert team collaborates with customers to tailor solutions that align with their unique application needs.

Sure, we can provide samples of fittings and valves for evaluation firstly. 

Yes, as a professional manufacturer and supplier, we do offer after-sales support, including technical assistance, troubleshooting, and warranty services. Besides, We offer a customer-friendly policy: we’ll either send a free replacement or issue a credit right away. We're committed to making things right for you.

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