... Bolier tube, Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes1. Standards: ASTM A53, ASME SA53, ASTM A106, ASME SA106, ASTM A179, ASME SA179, ASTM A192 ... , ASTM A210, ASME SA210, ASTM A213, ASME SA213, DIN1629, DIN 17175, JIS, BS, API 5L and so on.2. Models of major ... grade steeI tubes: ASTM A53 Grade Aor Grade B, ASTM A106 Grade Aor Grade B, A ...