The G series sewer fitting line is a fully-integrated SDR 35 fitting design using reinforced branches and intersections to enhance the structural integrity of the installation and provide long-lasting performance. Used for non-pressure drainage of sewer and surface water. Gasketed sewer pipe has a specially designed Double Seal locked in rieber gasket that provides a leak proof joint on extremely durable pipe. Certified to ASTM D3034 and CSA B182.2. They conform to all municipal, federal, and military requirements. They are tested for joint tightness, internal stress and dimensional stability. The G Series is engineered for the harsh environment of construction, shipping, handling and installation.