... 65,70,75mm 3. material: alu. 1.casting alu. french guillemin coupling.2. we can offer storz , john morris ... , french, GOST, spanish types . american type, nakajima type , machino type ... fast delivery time and good service.7. size:1"-5"8. produce mothod: dia casting , casting , forge.9. can ... .10. work pressure: 1-1.6MPa. casting alu. french guillemin coupling