Job Opportunities in Germany

AMMM00000YT
Revision No:
2



This is to certify:
That
Großenhainer Gesenk- und Freiformschmiede Gmb H
Öhringer Str. 24-26,
01558 Großenhain,
Germany

is an approved manufacturer of
Steel Forgings

in accordance with
DNV rules for classification – Ships
DNV class programme – DNV-CP-0247 Steel forgings


and the following particulars:


Application area Forgings for hull structures and equipment
Forgings for shafting and machinery
Forgings for gearing
Forgings for boilers, pressure vessels and piping systems
Steel type Carbon and carbon-manganese,
Alloy,
See page 2
Forging method Open die forging / closed die forging
Max. weight See page 2
Heat treatment condition See page 2
Additional approval Including grades according to international standards for approved applications,
conditions see particulars of the approval




Manufacturer(s) approved by this certificate is/are accepted to deliver according to DNV GL, DNV and GL rules.
Materials to be applied to DNV classed object shall fulfill the material requirements in the applicable DNV class rules.

Issued at Hamburg on 2024-01-10


for DNV
This Certificate is valid until 2025-12-31.
DNV local unit: Magdeburg

Approval Engineer: Christian Wildhagen
Thorsten Lohmann
Head of Section



LEGAL DISCLAIMER: Unless otherwise stated in the applicable contract with the holder of this document, or following from mandatory law, the liability of DNV AS, its
parent companies and their subsidiaries as well as their officers, directors and employees (“DNV”) arising from or in connection with the services rendered for the
purpose of the issuance of this document or reliance thereon, whether in contract or in tort (including negligence), shall be limited to direct losses and under any
circumstance be limited to 300,000 USD.


Form code: AM 311 Revision: 2022-12 www.dnv.com Page 1 of 2

Job Id: 263.11-003285-4
Certificate No: AMMM00000YT
Revision No: 2


Particulars of the approval



Forgings for hull structures and equipment
Forging Max. weight Heat treatment
Steel type Grade 3)
method 1) [kg] condition 2)
NV F400UW, NV F440UW,
C and
NV F480UW, NV F520UW, OD, CD 300 N, NT, QT
C-Mn
NV F560UW, NV F600UW
NV F550AW, NV F600AW,
Alloy OD, CD 300 QT
NV F650AW

Forgings for shafting and machinery
Forgings for gearing


3) Forging Max. weight Heat treatment Steel type Grade
method 1) [kg] condition 2)
NV F400U, NV F440U,
NV F480U, NV F520U,
C and
NV F560U, NV F600U, OD, CD 300 N, NT, QT
C-Mn
NV F640U, NV F680U,
NV F720U, NV F760U
NV F600A, NV F700A,
Alloy NV F800A, NV F900A, OD, CD 300 QT
NV F1000A, NV F1100A

Forgings for boilers, pressure vessels and piping systems
3) Forging Max. weight Heat treatment Steel type Grade
method 1) [kg] condition 2)
C and C-Mn NV F450H, NV F490H OD, CD 300 N, NT, QT
NV F0.5Mo,
OD, CD 300 N, NT, QT
Alloy NV F1Cr0.5Mo
NV F2.25Cr1Mo OD, CD 300 N, QT

Steels acc. other standards
3)4) Forging Max. weight Heat treatment Grade
method 1) [kg] condition 2)
Steel acc. to EN 10250-2 and -3 OD, CD 300 acc. standard
Steel acc. to EN 10083-2 and -3 OD, CD 300 acc. standard
Steel acc. to EN 10084 OD, CD 300 acc. standard


Remarks:
1) OD: Open die forging
CD: Closed die forging
2) QT: Quenched and tempered
N: Normalized
NT: Normalized and tempered
3) Incl. equivalent grades in acc. to other standards
4) Including pre-material acc. EN 10025