- Title 1 - General Provisions
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CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER F—MARINE ENGINEERING (parts 50 to 64) > PART 56—PIPING SYSTEMS AND APPURTENANCES > SUBPART 56.65—Fabrication, Assembly and Erection (§56.65-1 to §56.70-20) > 56.70-3—Limitations.
56.70-3—Limitations.
Backing rings. Backing strips used at longitudinal welded joints must be removed.
[CGD 73-254, 40 FR 40165, Sept. 2, 1975]