ASTM A387 alloy steel grade 22 class 2 low tempture boiler steel plates high quality a387gr22cl2 steel plate. $600.00-$900.00/ Ton. 1 Ton (Min. Order) CN Henan Bebon Iron & Steel Co., Ltd. 3 YRS. ASTM A387 Grade 5 Class 2 Steel PlatesASTM A387 Grade 5 steel is an alloy chromium molybdenum pressure vessel steel plate designed for use in boilers, pressure vessels and heat exchangers at high temperatures.. ASTM A387 Grade 5 is defined by the ASTM/ASME A387/A387M standard differs from the other grades covered by the standard in the chromium and molybdenum content of the steel
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