ST52.3 / ST52.3N DIN 17121 / DIN 2448 Hot Finished Seamless Tubes & Pipes E355 / E355+AR DIN 10297-1 HFS - Hot Finished Seamless Tubes & Pipes ST52 DIN 2391 Seamless Tubes for Hydraulic Cylinder St 52.0 DIN 2391 Seamless Tubes for Hydraulic Cylinder ST 52 DIN2391 PART 1 Grade A, ...