... give you the best price. 3.the pipe is made in stainless steel Pipe ParametersOutside diameter(MM)Wall thickness(MM)Length(M ... #3, 30#, 45#, 16MN, 27SIMN, 37MN5, 35MN2V, 42CRMO, 40CR and other kinds of MN steel and CR steel. stainless steel pipe and seamless steel ...