... 17172 StE 290.7 steel plate/pipes for large diameter pipes StE 290.7 steel plate/pipes, under DIN ... 17172 standard, we can regard StE 290.7steel plate/pipes ... diameter pipes. StE 290.7 steel plate/pipes is one mainly of Steel for large diameter pipes, ... liquid transportation, oilfield engineering, ductwork, construction, steel pipe and oil and gas project which use pipes ...