reformer tube centrifugal casting outlet reducers 1.Standard:ANSI,,ASME,GB 2.Material:Cr20Ni32Nb 3Certification:ISO9001: ... centrifugal casting outlet reducers1.Standard:ANSI,ASTM,ASME,DIN,GB2.Size: φ171/φ55 Standards or supply nonstandard as customers' request3.can ... etc,7.Certification:ISO9001:2008 reformer tube centrifugal casting outlet reducers