Paiement termes
L/C,D/A,D/P,T/T, Western Union
Standard
API, API 5CT, API 5L, ASTM A234-2007, ASTM A333-2005, ASTM A199, BS 1387, DIN 2448, GB/T8162, Gb/t8163
Grade
10 #-45 #, 10 #, 45 #, A53-A369, A106(B,C), API J55-API P110, API J55, API K55, API N80, API L80, API P110, Q195-Q345, Q235, Q345, Q195, ST35-ST52, ST35, STB35-STB42, STB35, STB42