Seamless steel tubes for ships

Standards：
Standard for malerials and wielding from Chineseclassifying society Chinese clasifying society(CCS)
Standard of DNV DetNorske Veritas(DNV)
Standard of Lloyd’S Register of UK(LR)Lloyd’S Registerof UK(LR)
Standard of Germanischer Lloyd Germanischer Lloyd(GL)
Standardof American Bureau of Shipping(ABS)American Bureau of Shipping(ABS)
Standardof BUREAU VERITAS(BV)BUREAU VERITAS(BV)
Standard of RINA Italianclassification society(RINA)
Standard of NIPPON KAIJI KYOKAI(NK)NIPPON KAIJIKYOKAI(NK)
GB／T5312 Chinese nationalstandard
Appication：
Seamless steel tubes formanufacturing marine boilers and ovemeaters as we as pressure pipes opf grade Iand
Model N0．of major steeltubes
320360410460490etc．