The Long Ductile Iron Coupling with Epoxy Coat and ECoat Bolts from JCM Industries, Inc. is engineered for pipe sizes of 3.5 inches. This coupling features a robust ductile iron construction with an epoxy coating that enhances its resistance to corrosion and wear. The ECoat bolts provide additional protection, ensuring a secure and durable connection in various applications. This product complies with industry standards, making it a reliable choice for water and wastewater systems. Its design facilitates easy installation and maintenance, catering to the needs of professionals in the field.