... medium pressure seamless carbon steel tubepetroleum casing tube ,petroleum cracking tube, seamless steel tube ,seamless steel pipe,ASTM A106 seamless carbon ... pipe for high temperature service,seamless steel tube,seamless tube,seamless carbon steel tube, product informationMETERIAL:ASTM A106. GRB/A53. ... : API5CT, API5L, ASTM, JIS, DIN, GB , and so on.Material: Q235, ST52,ST42,A106 -a, A106-B , and ...