... . Lightweight and heavy-duty clamps complete the unions. Packing: Shrink wrap - Carton - Plywood caseAStandard: DIN,SMS,3A,ISO,IDF,RJT,AS ... ,BS,BPECertificate: ISO 9001, 3A ,TUV, CEPolishing: Inner surface mechanical polished Ra less than 0.4 - 0.8 ...