... .Material:ZG200-400 2.class certificate:BV,KR,GL,ABS,NK,RITA 3.Ultrasonic test:Grade 2 4.Weight:18 tons ... ,JIS and so on; ISO 9001:2000;BV,CCS,DNV,NK,RINA,KR and so on.Weight:from 3 tons to ... help us "see" issues before a part is ever cast. This capability enables our engineers to leverage data in the design ... to obtain a smooth surface. rudder horn by KSC42 with NK cclass certificate