20CR 40CR lackierte nahtloses Ferrit-Austenit legierter Stahl-Wärmetauscher-Rohr

1mm -12mm 20CR 40CR varnished Seamless Ferrite Austenitic Alloy Steel Tubes for Heat Exchanger Seamless Ferrite Austenitic Alloy Steel Tubes Specifications: Grade and Chemical Composition(％) Grade C Mn P≤ S≤ Si Cr Mo T2 0.10～0.20 0.30～0.61 0.025 0.025 0.10～0.30 0.50～0.81 0.44～0.65 T11 0.05～0.15 0.30～0.60 0.025 0.025 0.50～1.00 1.00～1.50 0.44～0.65 T12 0.05～0.15 0.30～0.61 0.025 0.025 ≤0.50 0.80～1.25 0.44～0.65 T22 0.05～0.15 0.30～0.60 0.025 0.025 ≤0.50 1.90～2.60 0.87～1.13 T91 0.08