Manufacturer(s) approved by this certificate is/are accepted to deliver according to DNV GL, DNV and GL rules.

Transcription

1 Certificate No: AMMM00000EJ This is to certify: That GROUP KARL DIEDERICHS Plant Karl Diederichs KG - Dirostahl Luckhauser Strasse 1-5 Remscheid, Germany is an approved manufacturer of Steel Forgings in accordance with DNV GL rules for classification Ships and the following particulars: Open die forgings (incl. bars and seamless rolled rings) Steel type(s) Forgings for hull structures and equipment Forgings for gearing Stainless steel forgings Max. weight kg Delivery Normalized, (double) normalized + tempered, quenched + tempered, annealed, solution annealed + quenched Remarks see Particulars of the approval Manufacturer(s) approved by this certificate is/are accepted to deliver according to DNV GL, DNV and GL rules. This Certificate is valid until Issued at Hamburg on DNV GL local station: Essen Approval Engineer: Oliver Krömer for DNV GL Thorsten Lohmann Head of Section Form code: AM 1462a Revision: Page 1 of 5 DNV GL DNV GL and the Horizon Graphic are trademarks of DNV GL AS.

2 Particulars of the approval Forgings: Thickness [mm], max. Weight Forgings for hull structures and equipment F400UW, F440UW, F480UW, F520UW, F560UW, F600UW 1600 F550AW, F600AW, F650AW 1600 F400U, F440U, F480U, F520U, F560U, F600U, F640U, F680U, F720U, F760U F600A, F700A, FA, F900A, F1000, F1100A F450H, F490H 1600 F0.5Mo, F1Cr0.5Mo N+T, 1600 F2.25Cr1MoN N+T 1600 F2.25Cr1MoQT 1600 F450L, F490L 1600 F3.5Ni, F5Ni N+T, 1600 F9Ni 1600 Non-alloy steels C & C-Mn steels acc. to EN C & C-Mn steels acc. to EN C & C-Mn steels acc. to SEW C & C-Mn steels acc. to EN N+T, 1600 C & C-Mn steels acc. to EN C & C-Mn steels acc. to EN N, 1600 C & C-Mn steels acc. to EN ST N, 900 Form code: AM 1462a Revision: Page 2 of 5

3 Thickness [mm], max. Weight Alloy steels Alloy steels acc. to EN Alloy steels acc. to EN Alloy steels acc. to SEW Alloy steels acc. to EN CrNiMo7-6 acc. to EN ),2) 1600 Alloy steels acc. to EN N+T, 1600 Nickel steels acc. to EN N+T, 1600 Alloy steels acc. to EN ST 900 Stainless steels Austenitic steels acc. to EN S+Q 1600 Austenitic steels acc. to EN S+Q 1600 Austenitic steels acc. to EN ST S+Q 900 Duplex steels acc. to EN S+Q 1600 Duplex steels acc. to EN S+Q 1600 Ferritic steels acc. to EN A 1600 Martensitic steels acc. to EN Martensitic steels acc. to EN FF: open die forgings ST: forged bars N: normalized A: annealed N+T: normalized + tempered N+N+T: double normalized + tempered : quenched + tempered S+Q: solution annealed + quenched CC: continuous castings IC: ingot casting Remarks: 1) 2) Clean steel forgings of grade 18CrNiMo7-6 acc. to EN are qualified for approved applications (see pt. 2). Special requirements for clean steel forgings are given in DNV GL rules Pt. 2, Ch. 2, Sec.6, [1.6.10]. Subject to special approval, clean steel forgings of grade 18CrNiMo7-6 acc. to EN are approved for further processing to gears acc. to DNV GL Class Guideline No. DNVGL-CG-0036, and classed to high grade. Form code: AM 1462a Revision: Page 3 of 5

4 Connecting Elements and Fittings: Outer Dia. Height Weight [mm], max. [mm], max. Forgings for hull structures and equipment F400UW, F440UW, F480UW, F520UW, F560UW, F600UW F550AW, F600AW, F650AW F400U, F440U, F480U, F520U, F560U, F600U, F640U, F680U, F720U, F760U F600A, F700A, FA, F900A, F1000, F1100A F450H, F490H F0.5Mo, F1Cr0.5Mo N+T, F2.25Cr1MoN N+T F2.25Cr1MoQT F450L, F490L F3.5Ni, F5Ni N+T, F9Ni Non-alloy steels C & C-Mn steels acc. to EN C & C-Mn steels acc. to EN C & C-Mn steels acc. to SEW 550 C & C-Mn steels acc. to EN N+T, C & C-Mn steels acc. to EN C & C-Mn steels acc. to EN N, Alloy steels Alloy steels acc. to EN Alloy steels acc. to EN Form code: AM 1462a Revision: Page 4 of 5

5 Outer Dia. Height Weight [mm], max. [mm], max. Alloy steels acc. to SEW 550 Alloy steels acc. to EN CrNiMo7-6 acc. to EN ),2) Alloy steels acc. to EN N+T, Nickel steels acc. to EN N+T, Stainless steels Austenitic steels acc. to EN S+Q Austenitic steels acc. to EN S+Q Duplex steels acc. to EN S+Q Duplex steels acc. to EN S+Q Ferritic steels acc. to EN A Martensitic steels acc. to EN Martensitic steels acc. to EN : seamless rolled rings N: normalized A: annealed N+T: normalized + tempered : quenched + tempered N+N+T: double normalized + tempered S+Q: solution annealed + quenched CC: continuous castings IC: ingot casting Remarks: 1) 2) Clean steel forgings of grade 18CrNiMo7-6 acc. to EN are qualified for approved applications (see pt. 2). Special requirements for clean steel forgings are given in DNV GL rules Pt. 2, Ch. 2, Sec.6, [1.6.10]. Subject to special approval, clean steel forgings of grade 18CrNiMo7-6 acc. to EN are approved for further processing to gears acc. to DNV GL Class Guideline No. DNVGL-CG-0036, and classed to high grade. Form code: AM 1462a Revision: Page 5 of 5