NFSeBeloHorizonteMG.NfseWSService ws1 = new NFSeBeloHorizonteMG.NfseWSService();

ws1.Url = hostWS;

X509Certificate certificado = cert.BuscaNroSerie(noSerieCert, false);
ws1.ClientCertificates.Add(certificado);
ws1.UseDefaultCredentials = true;

string result = ws1.ConsultarLoteRps(cabecalho, consulta);