● Inner Diameter: 30~500mm
● Material: ST52, E355, S355J0H, S355J2H, ST45,  SAE1026, STKM13C, Q345B,Q345D,16Mn, 27SiMn, 25Mn, AISI 304, AISI 316, AISI 431
● Standard: DIN2391, EN10305, GB/T8713-88, GB/T3639-2000

* Low temperature impact test upon request (27J/-20°C)