ASTM A179 / ASME SA179 Txuj Specification rau Seamless Cold-Drawn Low-Carbon Steel Thaum tshav kub kub Exchanger thiab Condenser Tubes
Uncoated thiab kub dip galvanized nominal seamless steel yeeb nkabASTM A53 GR. IB GR
Kub kub seamless carbon steel raj
ASTM A106 GRA GRB
Tso Koj Cov Lus
