Elbows

3. REQUIREMENTS

3.1 ;The .25 IPS Elbow must be made in accordance with NAVSEA drawing 4687601 piece 124A, except as amplified or modified herein.;

3.2 Extra Dimensions for Elbows - A. All Elbows - All elbows must have 1/2 inch minimum straight tangents added to the center to end dimensions. B. Nonstandard pipe sizes (7 and 9 inch NPS) - The center to end dimensions of the next larger size may be used or the center to end dimensions may be interpolated from the next larger and next smaller standard size. (1/2 inch minimum straight tangents must be added to this dimension)

3.3 Material for Parts Requiring Certification - Quantitative chemical and mechanical analysis is required for the parts…