

Stu-Piping History
With close to a decade of hands-on experience in flange design and manufacturing, STU Piping is a specialist manufacturer and supplier of stainless steel, ductile iron, and carbon steel flanges. We are established as a leader in the engineering, design, manufacture, and distribution of piping flange systems.
STU Piping is part of the RPK Group, a broader group of businesses with expertise across piping, steel products, engineering, construction, and industrial solutions — including JPW Financial Services (Financial & Accounting), RPK Techno Solutions (Engineering & Steel Detailing), RE Infra (Construction & Infrastructure), and Tirupati Enterprises (Steel Fabrication).
Through years of experience in flange engineering, we’ve helped reduce costs and increase performance across piping systems worldwide. Our customers are typically pipe manufacturers, pipe fitting manufacturers, distributors, and contractors, spanning 7+ countries, including the USA, Canada, UK, UAE, India, and Australia.
We maintain dependable supply and delivery capabilities to support your project wherever it’s located, with offices in the USA and India.
Company Capabilities
Benefits:
- Engineered flange geometry that helps maintain secure connections and reliable bolt tension when correctly installed
- Lightweight design reduces handling and transportation requirements compared with conventional flange systems
- Protective materials and corrosion-resistant construction suited to demanding environments
- Available across stainless steel, ductile iron, and carbon steel matched to your application and budget requirements
- Reduced lifecycle cost through lower weight, easier installation, and reduced maintenance
- Wide size range available across a broad range of pipe diameters and pressure classes
Quality Manufacturing
Quality assurance is at the heart of STU Piping’s manufacturing process. Our flange products are produced under a rigorous QA/QC program, with every order — large or small — held to the same inspection standards and acceptance criteria.
This approach has driven consistent improvements in productivity, quality, and on-time performance, allowing us to offer cost-competitive flange solutions without compromising on reliability.
Research Information Systems
STU Piping regularly shares technical and reference information as a service to the industry, including dimensional data, specification sheets, and installation guidance for our stainless steel, ductile iron, and carbon steel flange ranges.
This information is available to STU Piping customers worldwide, free of charge. STU Piping is built to be a full-service flange company with a strong customer connection.
