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                                                                    EXHIBIT 3.27


                          CERTIFICATE OF INCORPORATION
                                        
                                       OF
                                        
                               PCI CAROLINA, INC.
                                        
                                   * * * * *

     1.   The name of the corporation is PCI Carolina, Inc.,

     2.   The address of its registered office in the State of Delaware is
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County
of New Castle.  The name of its registered agent at such address is The
Corporation Trust Company.

     3.   The nature of the business or purposes to be conducted or promoted is
to engage in any lawful act or activity for which corporations may be organized
under the General Corporation Law of Delaware

     4.   The total number of shares of stock which the corporation shall have
authority to issue is:  One Thousand (1,000) and the par value of such shares
is one cent ($0.01) amounting in the aggregate to Ten Dollars ($10.00).

     5.   The board of directors is authorized to make, alter or repeal the
by-laws of the corporation.  Election of directors need not be by written
ballot.

     6.   The name and mailing address of the sole incorporator is as follows:

                    NAME                     MAILING ADDRESS

               S.A. Seraj               811 Dallas Avenue, Houston, Texas 77002

     7.   The corporation shall indemnify its officers, directors, employees
and agents to the extent permitted by the General Corporation Law of Delaware.

     I, THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a corporation pursuant to the General Corporation Law of the
State of Delaware, do make this certificate, hereby declaring and certifying
this is my act and deed and the facts herein stated are true, and accordingly
have hereunto set my hand this 15th day of September, 1997.


                                                            /s/ S.A. Seraj
                                                            -------------------
                                                            S.A. Seraj




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