JIS, DIN, ASTM, API, GB, bs, JIS G3463-2006, DIN 1626, DIN 1629/4, ASTM A106-2006, ASTM A53-2007, API 5CT, API 5L, API 5DP, GB 5310-1995, GB/T 8162-1999, BS EN10296, BS EN10025
Grade:
A53-A369, API J55-API P110, 16mn, 10#-45#, Q195-Q345, ST35-ST52, A53(A,B), A106(B,C), API J55, API K55, 16mn, 10#, 20#, 45#, Q235, Q345, Q195, ST37, ST52