S.C. Code § 6-17-60
The refunding bonds may be issued in one or more series, may bear such date or dates, may mature at such time or times not exceeding the period of usefulness of the enterprise, as determined by the governing body in its discretion, nor in any event exceeding forty years from their respective dates, may bear such rate or rates of interest as the governing body shall determine, may be in such denomination or denominations, may be in such form, either coupon or registered, may carry such registration and conversion privileges, may be executed in such manner, may be payable in such medium of payment, at such place or places, may be subject to such terms of redemption, with or without premium, may be declared or become due before the maturity date thereof, may provide for the replacement of mutilated, destroyed, stolen or lost bonds, may be authenticated in such manner and upon compliance with such conditions, and may contain such other terms and covenants, as may be provided by resolution or resolutions of the governing body of the municipality. Notwithstanding the form or tenor thereof, and in the absence of an express recital on the face thereof that the bond is nonnegotiable, all refunding bonds shall at all times be, and shall be treated as, negotiable instruments for all purposes.
S.C. Code § 6-17-60