ASTM F681-82 (R2018) pdf free.Standard Practice for Use of Branch Connections.
This practice lists commonly used types of branch connections for carbon steel, chromium-molybdenum steel pipe and copper-nickel alloy tubing. Branch to run size applications are given in Table 1, Table 2, and Table 3. Other types of branch connections (Fig. 1) may be used provided they comply with the requirements of Title 46 CFR Subparts 56.07-10(f) and 56.70-15(g) of the USCG Regulations.
3. General Requirements
3.1 Weld joint designs shall be in accordance with Specification F722 and the limitations therein.
3.2 Fabricated branch connections shall meet the reinforcement requirements of Section 104.3 of ASME B31.1 as modified by Title 46, CFR Subparts 56.07-10(f) and 56.70- 15(g) of the USCG regulations.
3.3 Threaded fittings shall be subject to the limitations of Title 46 CFR, Subpart 56.30-20 of the USCG Regulations.
4. Keywords
4. 1 branch con nnections; carbon steel connections;
chromium-molybdenum steel pipe; copper-nickel alloy tubing.