API 5CT Certificate
The American Petroleum institute reserves the right to revoke this authorization to use the official API Monogram for any reason satisfactory to the board of directors of the American Petroleum Institute.
The scope of this license includes the following: Manufacturer of Casing or Tubing Couplings at Groups 1,2,3 and 4,H40/PSL 1,K55/PSL1,N80 PSL1,R95/PSL1,L80PSL1,P110/PSL1,Q125 PSL1,Processor of Casing or Tubing Plain End at Groups1,2,3 and 4,J55/PSL1,N80/PSL1,N80(Q)/PSL1,R95/PSL1,L80/PSL1,P110/PSL1,Q125/PSL1;Threader
