Are you searching for reliable threaded pipe fittings manufacturers and suppliers for your industrial projects? Which companies can provide both standard and custom fittings with consistent quality? How do you find suppliers that meet the demands of high-pressure, leak-proof, and durable piping systems?
This article highlights the leading manufacturers and suppliers of threaded pipe fittings worldwide, showcasing their expertise, product ranges, and global reach. From stainless steel NPT fittings to BSPP and BSPT connections, these companies serve industries such as oil and gas, chemical processing, water treatment, and automation. We focus on their production capabilities, quality certifications, customization options, and supply networks to give buyers practical insights for sourcing the right fittings.
We also introduce air-fluid, a trusted manufacturer and supplier of precision threaded pipe fittings, known for high-quality products and flexible solutions. Keep reading to learn more about the top brands and find the right partner for your projects.
List of the Top 10 Threaded Pipe Fittings Manufacturers and Suppliers in the World
| Brand | Headquarters | Key Products/Services |
|---|---|---|
| 1. Proflow Dynamics | Houston & Corona, USA | Stainless steel NPT fittings, camlock couplings, ball valves, sanitary fittings, private-label supply |
| 2. ASC Engineered Solutions | USA | Threaded pipe fittings, pipe joining systems, fire protection components, engineering support |
| 3. Stainless Tubular Products | Monroe Township, USA | Threaded stainless fittings, butt & socket weld fittings, flanges, stainless steel tubing |
| 4. Guenther Supply, Inc. | Fond du Lac, USA | Industrial pipe, valves & fittings, hoses, gaskets, custom sourcing, emergency support |
| 5. Charlotte Pipe and Foundry | Charlotte, USA | Cast iron & plastic piping systems, threaded connectors, fabricated fittings |
| 6. Marcel Piping | India | Buttweld fittings, forged fittings, flanges, fasteners, alloy piping solutions |
| 7. United States Fittings™ | USA | Custom pipe fittings, threaded nipples, flanged fittings, fabrication services |
| 8. Zizi Engineering Co Ltd | Hong Kong, China | Carbon & stainless steel fittings, socket & butt weld fittings, flanges, custom processing |
| 9. Midland Industries | Kansas City, USA | Brass fittings, valves, hydraulic adapters, hose and pipe fittings |
| 10. AirFluid | Zhejiang Province, China | Threaded pipe fittings, pneumatic couplings, OEM solutions, precision machined components |
1. Proflow Dynamics
Introduction:
Proflow Dynamics is positioned as a dependable source for buyers specifically looking for threaded pipe fittings manufacturers and suppliers that can support fast-moving industrial supply chains. Operating from strategic warehouse locations in the United States, the company focuses on keeping commonly used stainless steel threaded pipe fittings readily available, especially NPT elbows, tees, couplings, reducers, nipples, and caps. Its supply model is built around inventory stability, short lead times, and the ability to support OEM programs, distributor stocking agreements, and private-label requirements. In addition to threaded pipe fittings, Proflow Dynamics offers complementary flow-control products, allowing customers to consolidate sourcing while maintaining consistent quality across threaded connection systems.
Established: 2007
Headquarters: Houston, Texas, USA (Warehouse & Office) | Corona, California, USA (Warehouse & Office)
Key Products/Services:
- Stainless steel NPT threaded pipe fittings (Class 150) – SS304 & SS316
- OEM & distributor supply programs with personalized stocking support
- Camlock fittings and stainless steel ball valves
- Tri-Clamp and sanitary fittings for food, beverage & brewery applications
- Customized and private-label fittings for high-volume users
2. ASC Engineered Solutions
Introduction:
ASC Engineered Solutions serves global industrial and infrastructure markets as a large-scale manufacturer and supplier of threaded pipe fittings and engineered pipe joining products. The company supports a wide range of applications by offering threaded fittings produced in multiple materials, including stainless steel, carbon steel, malleable iron, and brass. Its threaded pipe fittings portfolio is designed to meet recognized industry standards and is commonly specified in plumbing, mechanical, fire protection, and industrial piping systems. Beyond manufacturing, ASC provides engineering support, digital tools, and coordinated supply programs, making it a preferred partner for customers who require both product reliability and technical assistance.
Established: ASC brand introduced in 2021 (Root companies date back over 150 years)
Headquarters: United States (multiple regional operations across North America)
Key Products/Services:
- Threaded pipe fittings in stainless steel, malleable iron, brass, ductile iron & carbon steel
- Pipe joining systems & engineered connection solutions
- Fire protection, plumbing, mechanical & industrial pipeline components
- Digital design tools & engineering support for piping systems
- Customized sourcing and multi-brand supply programs
3. Stainless Tubular Products
Introduction:
Stainless Tubular Products operates as a specialized supplier focused on stainless steel piping solutions for industrial users with demanding performance requirements. The company maintains extensive inventories of stainless steel threaded pipe fittings, along with butt weld and socket weld components, supporting industries such as chemical processing, food and beverage, and water treatment. Its threaded fittings are available in multiple pressure classes and alloy grades, enabling customers to match material performance with corrosion and temperature conditions. By combining product availability with value-added services, STP supports customized piping projects and ongoing supply needs for OEMs and fabricators.
Established: 2000
Headquarters: Monroe Township, New Jersey, USA
Key Products/Services:
- Threaded stainless steel pipe fittings (150# & 3000#)
- Butt weld and socket weld stainless steel fittings
- Stainless steel pipe nipples and flanges
- Stainless steel tubing (round, square & rectangular)
- Custom cutting, deburring & polishing services
4. Guenther Supply, Inc.
Introduction:
Guenther Supply functions as a full-line industrial distributor supporting customers that require dependable access to threaded pipe fittings across a broad range of materials. The company sources threaded fittings in stainless steel, carbon steel, ductile iron, brass, plastics, and specialty alloys, serving maintenance, construction, manufacturing, and utility markets. Rather than focusing on a single product category, Guenther Supply emphasizes service coverage, emergency response capability, and technical support, making it a practical sourcing option for users who need consistent supply from experienced threaded pipe fittings suppliers.
Established: 1956
Headquarters: Fond du Lac, Wisconsin, USA
Key Products/Services:
- Industrial pipe, valves & fittings (PVF) distribution
- Stainless, carbon steel, ductile iron & alloy fittings and flanges
- Hose, hangers, strut, sealants, gaskets & piping accessories
- Custom sourcing & piping supply services
- 24/7 emergency supply support
5. Charlotte Pipe and Foundry
Introduction:
Charlotte Pipe and Foundry supports the threaded pipe fittings market through its vertically integrated manufacturing approach and system-based product offerings. While widely known for cast iron and plastic piping systems, the company also supplies threaded connectors as part of complete piping solutions for commercial and municipal projects. Its manufacturing control, documentation, and application support appeal to contractors and specifiers seeking threaded pipe fittings that integrate seamlessly with larger piping assemblies, ensuring compatibility, durability, and regulatory compliance.
Established: 1901
Headquarters: Charlotte, North Carolina, USA
Key Products/Services:
- Cast iron and plastic pipe & fittings (including threaded connectors integrated into systems)
- Large-diameter fabricated fittings and specialty coated components
- Technical support, value engineering, and product documentation
- Domestic manufacturing with multi-plant production and regional distribution
- Custom finishing and application-specific fabrication
6. Marcel Piping
Introduction:
Marcel Piping Projects Supply operates as a global manufacturer serving industries that require engineered piping components for complex operating environments. The company produces threaded pipe fittings alongside forged fittings, flanges, and buttweld components in a wide range of metallic materials, including stainless steel, alloy steel, and high-nickel alloys. Its threaded fittings are commonly supplied for oil and gas, petrochemical, and power projects where customization, certification, and material traceability are critical. Marcel Piping is often selected by buyers looking for threaded pipe fittings manufacturers capable of handling project-specific technical requirements.
Established: 2000s (India)
Headquarters: India
Key Products/Services:
- Buttweld Pipe Fittings (Elbow, Tee, Reducer, Cap, Stub End, Bend)
- Forged Pipe Fittings (Socket Weld, Threaded, Outlets, Nipples)
- Industrial Flanges (Weld Neck, Slip-On, Threaded, Blind, Socket Weld, Lap Joint)
- High-Quality Fasteners (Bolts, Nuts, U-Bolts, Studs)
- Customized Alloy Steel and Nickel Alloy Piping Solutions
7. United States Fittings
Introduction:
United States Fittings™ focuses on custom fabrication rather than mass-produced fittings, supporting customers that require non-standard threaded and specialty pipe components. The company manufactures threaded pipe fittings, shaped nipples, laterals, and complex assemblies in carbon steel, stainless steel, and aluminum. Its services extend beyond production to include inspection, testing, and full documentation, making it suitable for industries where engineered solutions and compliance are essential. USF is frequently chosen by buyers seeking a domestic threaded pipe fittings manufacturer with strong customization capabilities.
Established: 1980s
Headquarters: USA
Key Products/Services:
- Custom lateral, cross, and true wye pipe fittings
- Shaped-nipple, threaded-nipple, and stub end fittings
- P-traps, return-bends, and flanged fittings
- Custom design and fabrication services
- Inspection, testing, and material certification services
8. Zizi Engineering Co Ltd
Introduction:
Zizi Engineering Co Ltd supplies threaded pipe fittings to international markets through a combination of in-house manufacturing and quality-controlled processing services. The company produces threaded, socket weld, and butt weld fittings in carbon steel, stainless steel, alloy steel, and duplex materials, serving construction, petrochemical, and industrial equipment sectors. Its ability to provide custom threading, coatings, and inspections allows buyers to source project-ready threaded fittings that comply with international standards while maintaining flexibility in specifications.
Established: 2010
Headquarters: Hong Kong, China
Key Products/Services:
- Carbon steel, stainless steel, alloy steel, and super duplex threaded fittings
- Socket weld, butt weld, flanges, and pipe caps
- Custom threading, coating, fabrication, and processing
- Inspection, testing, and certification services
- Supply to construction, petrochemical, oilfield, and industrial machinery sectors
9. Midland Industries
Introduction:
Midland Industries serves as a supplier and manufacturer supporting distributors and OEMs that require consistent access to threaded fittings and related industrial components. Its product range includes threaded pipe fittings, adapters, valves, and connectors produced in materials such as brass, stainless steel, and aluminum. The company emphasizes supply chain efficiency, packaging solutions, and private-label support, positioning itself as a practical threaded pipe fittings supplier for customers focused on scalability and long-term distribution partnerships.
Established: 2018
Headquarters: Kansas City, Missouri, USA
Key Products/Services:
- Brass fittings, valves, and hydraulic adapters
- Custom industrial components and machined parts
- Hose, pipe, and tube fittings including stainless steel and aluminum options
- Supply chain solutions and distributor support programs
- Technical support, packaging, and marketing services
10. AirFluid
Introduction:
AirFluid operates as a precision-focused threaded pipe fittings manufacturer supplying global industrial markets. The company specializes in NPT, BSPP, and BSPT threaded fittings produced with CNC machining to ensure dimensional accuracy and leak-resistant performance. Its product range supports applications in oil and gas, chemical processing, water treatment, and automation systems. By offering both standard fittings and customized OEM solutions, AirFluid meets the needs of buyers searching for threaded pipe fittings suppliers that combine manufacturing control, quality assurance, and flexible production capacity.
Established: 2010
Headquarters: Ningbo, Zhejiang Province, China
Key Products/Services:
- Threaded pipe fittings (NPT, BSPP, BSPT) – elbows, couplings, unions, bushings, adapters
- High-pressure quick-connect pneumatic fittings and metal couplings
- Custom OEM and industrial piping solutions
- Precision-threaded components for oil & gas, chemical, water, and automation systems
- Inspection, testing, and ISO 9001-certified quality control services
Conclusion
The global threaded pipe fittings market includes both long-established manufacturers and specialized suppliers serving industrial, commercial, and infrastructure applications. Companies such as Proflow Dynamics, ASC Engineered Solutions, and Stainless Tubular Products provide a wide range of threaded pipe fittings, while suppliers like Guenther Supply, Charlotte Pipe and Foundry, and Midland Industries support full-line piping systems with strong distribution and technical support for OEMs and industrial users.
At the international level, manufacturers including Marcel Piping, Zizi Engineering Co Ltd, and United States Fittings™ focus on engineered and customized threaded pipe fittings for demanding projects. Within this landscape, AirFluid operates as a precision threaded pipe fittings manufacturer and supplier, offering CNC-machined NPT, BSPP, and BSPT fittings with OEM customization to support global industrial piping applications.
