Grau
10 #, 20 #, 45 #, 16mn, A53(A,B), Q195, Q235, Q345, ST35, ST37, St37-2, ST52, 10 #-45 #, 16mn, A53-A369, Q195-Q345, ST35-ST52
Padrão
API 5CT, API 5L, ASTM A53-2007, ASTM A53M-2007, BS EN10296, GB/T 3091-2001, GB/T 9711.1-1997, JIS G3466, API
Certificação
API,ISO9001:2008, a SGS,TUV