1,connecting flange 2,min OD around 150mm 3,weight of ... 2008/ISO9001:2008 audited manufacturer• OE qualification• We are able to manufacture all types of Forgings as per your requirements(length ... 15#,20#,25#,30#.35#,40#,45#,46#,etc.according to customers' different requirements.3,main material are 5CrMnMo,40Cr, ... accept processing on giving materials. 5, excellent heat treatment. 4130 connecting flange