A106-B cold rolled precision seamless steel pipe grade: A179, A106-B, 40Cr, 37Mn5, 20Cr; Standard: DIN 2391, GB/T 3639; Cold Rolled Precision Seamless Steel PipeSteel grade: 10#, 20#, 35 ... -22mm (0.0787"-0.8661"); Application: The products are used for jack, structural tube of automobile, absorber, and hydraulic pressure facility etc