Flanged Pipe

Due to their rigidity, flanged joints are not recommended for underground use, as unequal settlement or external stresses can cause excessive strain on pipes or flanges.

U.S. Pipe Fabrication produces flanged ductile iron pipe in sizes from 3"–64", including options with threaded flanges. Pipes are fabricated by threading plain-end pipe, attaching and aligning flanges, and facing the pipe-flange interface to ensure flush, perpendicular alignment. All threads conform to ANSI B1.20.1, and flanges are designed to meet ductile iron standards. Maximum pipe length is 19'6", with customizable end options including TYTON®, HDSS®, HP LOK™, MJ bells, and specialized grooved or restrained ends.

Flanged pipe is furnished with cement-mortar lining and asphaltic coatings as standard, with additional primers or linings available for special applications. U.S. Pipe recommends using FULL FACE FLANGE-TYTE™, FULL FACE FLANGE-TYTE II™, or RING FLANGE-TYTE™ gaskets for superior sealing performance; flat rubber gaskets are not equivalent and may risk flange or thread damage.

Installation requires clean flange faces, proper gasket placement, and progressive crisscrossed bolt tightening to achieve correct torque. Systems must be designed with proper anchoring, support, or restraint to prevent bending or torsional strain. U.S. Pipe’s engineered flanged piping solutions combine durability, precision fabrication, and industry-approved standards to ensure reliable performance for water and other liquid transport.