The Long Ductile Iron Coupling with Epoxy Coat and Stainless Steel Bolt from JCM Industries, Inc. is designed for pipe sizes of 3.5 inches. This coupling combines the strength of ductile iron with the protective properties of an epoxy coating, ensuring enhanced durability and corrosion resistance. The stainless steel bolt further improves the coupling's longevity, making it suitable for various water and wastewater applications. This product meets industry standards, providing a reliable and secure connection for pipeline systems. Its design allows for easy installation and maintenance, making it a preferred choice for professionals.