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A carbon steel in accordance with US standards, it has a very high resilience even at low temperatures. Used for flanges, fittings, and construction in general.
RK4 RK4S
RKS RKSPb
RK0S RK0SPb
RK0
RD6 RD6Pb
RK1 RK1Pb
50CrMo4
RB2 RB2Pb
34CRNIMO6
30CRNIMO8
46CRB2
21CRMOV5-7
31CRMOV9
32CRB4
34CRS4
36CRB4
37CRS4
51CRV4
RK1 B7 A193 B7M
A193 B16
A320 L7 L7M
A320 L43