Exhibit 3.1

Delaware The First State   Page 1

I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED ARE TRUE AND CORRECT COPIES OF ALL DOCUMENTS ON FILE OF “PERMA-PIPE INTERNATIONAL HOLDINGS, INC.” AS RECEIVED AND FILED IN THIS OFFICE.

THE FOLLOWING DOCUMENTS HAVE BEEN CERTIFIED: CERTIFICATE OF INCORPORATION, FILED THE TWELFTH DAY OF OCTOBER, A.D. 1993, AT 9 O`CLOCK A.M.

CERTIFICATE OF AMENDMENT, FILED THE TWENTY-SIXTH DAY OF JANUARY, A.D. 1994, AT 9 O`CLOCK A.M.

CERTIFICATE OF MERGER, FILED THE THIRTIETH DAY OF DECEMBER, A.D. 1996, AT 9 O`CLOCK A.M.

CERTIFICATE OF AMENDMENT, FILED THE THIRTIETH DAY OF JUNE, A.D. 2000, AT 9 O`CLOCK A.M.

CERTIFICATE OF AMENDMENT, CHANGING ITS NAME FROM "MFRI, INC." TO "PERMA-PIPE INTERNATIONAL HOLDINGS, INC.", FILED THE SEVENTEENTH DAY OF MARCH, A.D. 2017, AT 4:51 O`CLOCK P.M.

2354631 8100H SR# 20211265542		Authentication: 202948479 Date: 04-12-21
You may verify this certificate online at corp.delaware.gov/authver.shtml

Delaware The First State   Page 2

AND I DO HEREBY FURTHER CERTIFY THAT THE EFFECTIVE DATE OF THE AFORESAID CERTIFICATE OF AMENDMENT IS THE TWENTIETH DAY OF MARCH, A.D. 2017 AT 12:01 O'CLOCK A.M.

AND I DO HEREBY FURTHER CERTIFY THAT THE AFORESAID CERTIFICATES ARE THE ONLY CERTIFICATES ON RECORD OF THE AFORESAID CORPORATION, “PERMA-PIPE INTERNATIONAL HOLDINGS, INC.”.

2354631 8100H SR# 20211265542		Authentication: 202948479 Date: 04-12-21
You may verify this certificate online at corp.delaware.gov/authver.shtml