Shop Allied Fitting at BPS Supply Group. Our online selection includes pipe fittings and more. Allied Fitting is a leading brand in the world of industrial fittings, specializing in the design and manufacture of high-quality products for various industries. Their top-selling products, such as precision-engineered pipe fittings and connectors, are essential components in plumbing and fluid conveyance systems, providing leak-free and secure connections. What sets Allied Fitting apart is their commitment to precision engineering and durability, ensuring that their products are not only easy to install but also resistant to corrosion and wear, making them a reliable choice for a wide range of applications.