EX-1
                              AMENDMENT NO. 1
                                    TO
                             CREDIT AGREEMENT


      THIS  AMENDMENT NO. 1 TO CREDIT AGREEMENT (this "Amendment  No.  1"),
dated  as  of  April  13, 1998, is entered into by and among  AIRGAS,  INC.
("Airgas"),  AIRGAS CANADA INC., RED-D-ARC LIMITED and AIRGAS ONTARIO  INC.
(each   a   "Canadian  Borrower",  and  collectively   with   Airgas,   the
"Borrowers"), the U.S. Lenders and the Canadian Lenders (collectively,  the
"Lenders"), NATIONSBANK, N.A. (the "U.S. Agent") and CANADIAN IMPERIAL BANK
OF  COMMERCE (the "Canadian Agent", collectively with the U.S.  Agent,  the
"Agents").


                                 RECITALS

     WHEREAS, the Borrowers, the Lenders and the Agents are party to that
certain Credit Agreement dated as of December 5, 1997 (the "Existing Credit
Agreement");

     WHEREAS, the parties hereto have agreed to amend the Existing Credit
Agreement as set forth herein;

     NOW, THEREFORE, in consideration of the agreements herein contained,
the parties hereby agree as follows:

                                  PART I
                                DEFINITIONS

     SUBPART 1.1.   Certain Definitions.  Unless otherwise defined herein
or the context otherwise requires, the following terms used in this
Amendment No. 1, including its preamble and recitals, have the following
meanings:

          "Amended Credit Agreement" means the Existing Credit
     Agreement as amended hereby.

          "Amendment No. 1 Effective Date" is defined in Subpart 3.1.

     SUBPART 1.2.   Other Definitions.  Unless otherwise defined herein or
the context otherwise requires, terms used in this Amendment No. 1,
including its preamble and recitals, have the meanings provided in the
Amended Credit Agreement.
 EX-2
                                  PART II
                  AMENDMENTS TO EXISTING CREDIT AGREEMENT

     Effective on (and subject to the occurrence of) the Amendment No. 1
Effective Date, the Existing Credit Agreement is hereby amended in
accordance with this Part II. Except as so amended, the Existing Credit
Agreement and all other Credit Documents shall continue in full force and
effect.

     SUBPART 2.1.   Amendment to Section 1.1.  The following definitions
appearing in Section 1.1 of the Existing Credit Agreement are amended in
their entireties to read as follows:

           "Consolidated Net Income" means, for any period, the sum of  (i)
     the  sum,  without duplication, of net income (excluding extraordinary
     items)  after taxes for such period of the Consolidated Parties,  plus
     (ii)  on and after such time, if ever, as National Welders is required
     to  be  consolidated with Airgas in accordance with GAAP  and  to  the
     extent  not  included in the amount determined pursuant to clause  (i)
     above, net income (excluding extraordinary items) after taxes for such
     period  of National Welders, plus (iii) to the extent not included  in
     the  amount  determined  pursuant to  clause  (i)  above,  net  income
     (excluding  extraordinary items) after taxes for such  period  of  any
     Person  which became a direct or indirect Subsidiary of Airgas as  the
     result of a Material Acquisition during such period, all as determined
     in  accordance with GAAP, but excluding (a) the effect of (1) the non-
     recurring pre-tax charge of approximately $26 million to be  taken  by
     Airgas  in  the fourth fiscal quarter of 1997 in connection  with  the
     alleged  fraudulent  breach of contract by a third-party  supplier  to
     Airgas  and  (2)  any recoveries by Airgas or any of its  Subsidiaries
     relating  to the breach of contract referred in clause (1) above,  (b)
     the   effect  of  the  non-recurring  pre-tax,  non-cash   charge   of
     approximately  $5 million to be taken by Airgas in the  fourth  fiscal
     quarter  of  1997  relating  to the writedown  by  Airgas  of  certain
     machinery  and  equipment,  goodwill and other  intangible  assets  of
     Airgas  Breathing Air Systems, Inc. and Red-D-Arc Limited and (c)  the
     effect  of charges related to restructuring and repositioning made  or
     to  be  made for the fiscal year ending March 31, 1998 not  to  exceed
     $25,000,000.

     SUBPART 2.2.   Amendment to Section 9.1.  Subsection (i)(ii) of
Section 9.1 of the Existing Credit Agreement is hereby amended in its
entirety to read as follows:



     9.1  Events of Default.

      An  Event  of Default shall exist upon the occurrence of any  of  the
following specified events (each an "Event of Default"):

                          **********************

          (i)  Ownership.

                          **********************

                (ii) Airgas shall fail to own, directly or indirectly,
          all  of  the Voting Stock of each of the Canadian  Borrowers
          which  Airgas owned as of the Closing Date other  than  with
          respect  to  any  Canadian Borrower as of the  Closing  Date
          which  ceases to be a Canadian Borrower pursuant to  Section
          11.16.
 EX-3

     SUBPART 2.3.   New Section 11.16.  The following new Section 11.16 is
added to the Existing Credit Agreement immediately following existing
Section 11.15 thereof:

          11.16     Removal of a Canadian Borrower.

           Airgas  may  at  any  time request that  any  Canadian  Borrower
     hereunder  cease  to  be  a Canadian Borrower  by  delivering  to  the
     Canadian  Agent (which shall promptly deliver counterparts thereof  to
     each  Canadian Lender) a written notice to such effect.  Such Canadian
     Borrower shall cease to be a Canadian Borrower hereunder on the  later
     to occur of (i) the date the Canadian Agent receives such request, and
     (ii)  the  date  such Canadian Borrower has paid all of  the  Canadian
     Borrowers'  Obligations  owing by such  Canadian  Borrower,  and  such
     Canadian  Borrower  shall not be an applicant  under  any  outstanding
     Canadian Letter of Credit.


                                 PART III

                        CONDITIONS TO EFFECTIVENESS

          SUBPART 3.1.   Amendment No. 1 Effective Date.  This Amendment No. 1
shall be and become effective as of the date hereof (the "Amendment No. 1
Effective Date") when all of the conditions set forth in this Subpart 3.1
shall have been satisfied, and thereafter this Amendment No. 1 shall be
known, and may be referred to, as "Amendment No. 1".

         SUBPART 3.1.1. Execution of Counterparts of Amendment. The U.S. Agent
shall have received executed counterparts (or other evidence of execution,
including facsimile signatures, satisfactory to the U.S. Agent) of this
Amendment No. 1, which collectively shall have been duly executed on behalf
of each of the Borrowers, the Required Lenders and the Agents.

          SUBPART 3.1.2. Other Documents.  The U.S. Agent shall have received
such other documents as the U.S. Agent, any Lender or counsel to the U.S.
Agent may reasonably request.

                                  PART V
                               MISCELLANEOUS

     SUBPART 4.1.   Cross-References.  References in this Amendment No. 1
to any Part or Subpart are, unless otherwise specified, to such Part or
Subpart of this Amendment No. 1.

     SUBPART 4.2.   Instrument Pursuant to Existing Credit Agreement.  This
Amendment No. 1 is a Credit Document executed pursuant to the Existing
Credit Agreement and shall (unless otherwise expressly indicated therein)
be construed, administered and applied in accordance with the terms and
provisions of the Existing Credit Agreement.

     SUBPART 4.3.   References in Other Credit Documents.  At such time as
this Amendment No. 1 shall become effective pursuant to the terms of
Subpart 3.1, all references in the Credit Documents to the "Credit
Agreement" shall be deemed to refer to the Amended Credit Agreement.
 EX-4

     SUBPART 4.4.   Representations and Warranties.  Each Credit Party
hereby represents and warrants that (i) each Credit Party that is party to
this Amendment No. 1:  (a) has the requisite corporate power and authority
to execute, deliver and perform this Amendment No. 1, as applicable and (b)
is duly authorized to, and has been authorized by all necessary corporate
action, to execute, deliver and perform this Amendment No. 1, (ii)  the
representations and warranties contained in Section 6 of the Existing
Credit Agreement are, subject to the limitations set forth therein, true
and correct in all material respects on and as of the date hereof as though
made on and as of such date (except for those which expressly relate to an
earlier date) and (iii) after giving effect to this Amendment No. 1, no
Default or Event of Default exists under the Existing Credit Agreement on
and as of the date hereof.

     SUBPART 4.5.   No Other Changes.  Except as expressly modified and
amended in this Amendment No. 1, all the terms, provisions and  conditions
of the Credit Documents shall remain unchanged.

     SUBPART 4.6.   Counterparts.  This Amendment No. 1 may be executed by
the parties hereto in several counterparts, each of which shall be deemed
to be an original and all of which shall constitute together but one and
the same agreement.

     SUBPART 4.7.   Entirety.  This Amendment No. 1, the Amended Credit
Agreement and the other Credit Documents embody the entire agreement
between the parties and supersede all prior agreements and understandings,
if any, relating to the subject matter hereof.  These Credit Documents
represent the final agreement between the parties and may not be
contradicted by evidence of prior, contemporaneous or subsequent oral
agreements of the parties.

     SUBPART 4.8.   Governing Law.  THIS AMENDMENT NO. 1 AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE GOVERNED BY AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NORTH CAROLINA.

     SUBPART 4.9.   Successors and Assigns.  This Amendment No. 1 shall be
binding upon and inure to the benefit of the parties hereto and their
respective successors and assigns.


               [Remainder of page intentionally left blank.]
 EX-5

     This Amendment No. 1 is executed as of the day and year first written
above.

CREDIT PARTIES:
                         AIRGAS, INC.


                         By____________________________
                         Thomas C. Deas, Jr.
                         Vice President/Finance


                         AIRGAS CANADA INC.,


                         By____________________________
                         Jeffrey P. Cornwell
                         Vice President/Finance


                         RED-D-ARC LIMITED


                         By____________________________
                         Jeffrey P. Cornwell
                         Vice President/Finance


                         AIRGAS ONTARIO INC.


                         By____________________________
                         Jeffrey P. Cornwell
                         Vice President/Finance




                          [Signatures Continued]
 EX-6

U.S. LENDERS:
                    NATIONSBANK, N.A.,
                    individually in its capacity as a
                    Lender and in its capacity as U.S. Agent


                    By_____________________________

                    Title____________________________


                    THE BANK OF NEW YORK


                    By_____________________________

                    Title____________________________


                    FIRST UNION NATIONAL BANK


                    By_____________________________

                    Title____________________________


                    CORESTATES BANK, N.A.


                    By_____________________________

                    Title____________________________


                    BANK OF AMERICA NT&SA


                    By_____________________________

                    Title____________________________


                          [Signatures Continued]
 EX-7
                    THE FIRST NATIONAL BANK OF CHICAGO


                    By_____________________________

                    Title____________________________


                    CIBC INC.


                    By_____________________________

                    Title____________________________


                    PNC BANK, NATIONAL ASSOCIATION


                    By_____________________________

                    Title____________________________


                    FLEET BANK N.A.


                    By_____________________________

                    Title____________________________


                    THE SANWA BANK, LIMITED
                    NEW YORK BRANCH


                    By_____________________________

                    Title____________________________


                          [Signatures Continued]
 EX-8

                    SOCIETE GENERALE


                    By_____________________________

                    Title____________________________


                    THE BANK OF NOVA SCOTIA


                    By_____________________________

                    Title____________________________


                    BANK AUSTRIA AKTIENGESELLSCHAFT

                    By_____________________________

                    Title____________________________


                    BANK OF TOKYO-MITSUBISHI TRUST COMPANY

                    By_____________________________

                    Title____________________________


                    THE FUJI BANK, LIMITED

                    By_____________________________

                    Title____________________________


                    MELLON BANK, N.A.

                    By_____________________________

                    Title____________________________

                          [Signatures Continued]
 EX-9
                    SUNTRUST BANK, ATLANTA

                    By_____________________________

                    Title____________________________


                    By_____________________________

                    Title____________________________


                    THE SUMITOMO BANK, LIMITED

                    By_____________________________

                    Title____________________________


                    WACHOVIA BANK, N.A.

                    By_____________________________

                    Title____________________________


                          [Signatures Continued]
 EX-10

CANADIAN LENDERS:
                    CANADIAN IMPERIAL BANK OF COMMERCE,
                     individually in its capacity as a Lender  and  in  its
capacity
                    as Canadian Agent


                    By_____________________________

                    Title____________________________


                    BANK OF AMERICA CANADA


                    By_____________________________

                    Title____________________________


                    FIRST CHICAGO NBD BANK, CANADA


                    By_____________________________

                    Title____________________________


                    THE BANK OF NOVA SCOTIA


                    By_____________________________

                    Title____________________________


                    MELLON BANK CANADA

                    By_____________________________

                    Title____________________________