Materials: According to customers' demands , you can choose 1.4404,1.4462,AISI316L,304L, C45,41Cr4,42CrMo4,17CrNiMo6,34CrNiMo6,ST52-3, S355JR, S355J2G3,etc. Manufacturing way: Forged or Cutted from bars,CNC turned,milled,drilled,threaded,etc. Heat treatment: According to the customers' demands,like the Annealing, Normalizing, Quenching & tempering (Q+T),Hardening,etc. Size: Dia. from 10mm to 2,000mm, length from 20mm to 8,000mm. Weight: From 0.1kg to 10,000kg/pc.