Closed Die Forgings


Forgings are available in wide range of steels including Carbon, Alloy, Stainless and Duplex Grades.

Popular grades are:-

Carbon steel C45
Alloy Steel 42CrMo4, 42CrMoS4, 30CrMo4 36CrNiMo6
Stainless Steel 304, 316
Super Duplex 1.4501


Forgings are available in weight range of 30kg to 1500kg

Maximum dimensions are 900mm diameter and 500mm Height


Several options of condition are available from as forged through to heat treated and finally machined.

Heat Treated conditions can be controlled cooled, fully annealed or quenched and tempered.

Machining can be either partial or fully to drawing dimensions.


Siepmann have a comprehensive range of System and Product Approvals certificates of which can be downloaded from their website and select downloads. These include the following:-

ISO 9001:2015 Quality Systems

ISO 14001:2015 Environmental Management Standard

ISO 50001:2011 Energy Management Systems

TUV – AD2000-W0 – Pressure Vessel Requirements

Lloyds Register – Manufacturing Approval

Bureau Veritas – Manufacturing Approval

American Bureau of Shipping – Manufacturing Approval.

DNV.GL - Rules for Classification – Ships –Approved Manufacturer


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