{"data":{"id":"us/46-cfr-154.528","jurisdiction":"us","citation":"46 CFR 154.528","heading":"Piping joints: Flange type.","body":"(a) A flange must be one of the following types:\n(1) Welding neck.\n(2) Slip-on.\n(3) Socket weld.\n(b) If the piping is designed for a temperature between −10 °C (14 °F) and −55 °C (−67 °F), the pipe flange may be a:\n(1) Slip-on type, if the nominal pipe size is 100 mm (4 in.) or less;\n(2) Socket weld, if the nominal pipe size is 50 mm (2 in.) or less; or\n(3) Welding neck.\n(c) If the piping is designed for a temperature lower than −55 °C (−67 °F), the pipe flange must be a welding neck type.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES","PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES","Subpart C—Design, Construction and Equipment"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"b8282334e52b3ab0dd91e9677def9952cb6b93ef7b8ea9cf90363c3757af8bea","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-154.526","next":"us/46-cfr-154.530"},"notice":"GroundRules: Original legal text. Not legal advice."}