EN 1090 · Eurocodes · NORSOK
Steel Detailing Services for European Projects
Tekla models and fabrication drawings for European industrial, energy and offshore steelwork, prepared to your execution specification, three to four hours ahead of Central European time.
Detailing to European Execution Specifications
PetroHill provides Tekla detailing capacity to steel fabricators, detailing offices and EPC contractors across Europe working on industrial, energy and offshore projects. From Lahore we are three to four hours ahead of Central European time: your morning overlaps our afternoon for calls and queries, and comments sent in your afternoon are picked up at the start of our next day.
European steelwork follows a common framework with national detail. Design is to the Eurocodes with the National Annex of the country where the structure is built, and execution to EN 1090-2 at the execution class the designer specifies, with the fabricator responsible for CE marking under EN 1090-1. On North Sea offshore and some onshore energy work, the operator may add NORSOK requirements such as M-101 for structural steel fabrication. We confirm which documents apply, in what order, before any modelling starts.
Our senior team's background is heavy industrial and energy steel: refinery expansions, gas-processing units, offshore topsides and brownfield modifications, mainly in the Middle East and Central Asia. For European packages we pair that experience with a scope review of your drawing standard, marking system, language requirements for drawing text and shop conventions, and we offer a fixed-price pilot so you can check our output on your own project.
We work in English. Where drawings must carry another language, we agree the title block, standard notes and terminology list with you at the start so that every sheet is consistent.
Scope & Deliverables
Typical European packages
- Process, Chemical and Energy Plant Structures
- Pipe Racks, Platforms and Access Steel
- Offshore Topsides Secondary Steel and Modules Where Specified
- Equipment Supports and Skid Frames
- Modification Steel for Operating Sites
- Rebar Placing Drawings and Bar Schedules
Deliverables
- Tekla Structures Detailing Model
- GA, Erection, Assembly and Single-Part Drawings
- Anchor and Embed Plans
- Member, Bolt and Material Lists
- IFC Exports for Coordination with Plant Design Tools
- NC / DSTV Files Where Contracted
Standards & Specifications
The execution class, execution specification and any operator requirements come from the designer and the contract; we detail to them and do not select the class or certify conformity. CE marking under EN 1090-1 is the fabricator's. Working to a standard is not a claim of certification.
The scope of work records the applicable standards and editions for each package. A reference to a standard does not imply design verification or certification.
How standards are appliedCEN
Eurocodes
Eurocodes with the Applicable National Annex
CEN / BSI
EN 1090-2 (BS EN 1090-2 in the UK)
Execution of Steel Structures: Technical Requirements
Standards Norway
NORSOK M-101
Structural Steel Fabrication
Client / EPC / asset owner
Project specifications
Client, EPC and Owner Standards and Project Specifications
ISO
ISO 19650 series
Information Management Using Building Information Modelling
ISO
ISO 19902
Fixed Steel Offshore Structures
From Lahore, on your schedule
Working Your Hours
Central Europe is three to four hours behind Lahore. Your morning overlaps our afternoon for calls and queries, and comments sent in your afternoon are picked up at the start of our next day.
- UTC+5LahoreOur office (no daylight saving)
- UTC+1 / +2Central Europe3–4 hours behind Lahore
- UTC+0 / +1UK & Portugal4–5 hours behind Lahore
- UTC+2 / +3Eastern Europe2–3 hours behind Lahore
How a Package Runs
Inputs, model, checks, drawings and revisions, with information gaps raised before work proceeds.
- 01
Inputs
Design, National Annex, execution specification and class, operator requirements and drawing standard confirmed.
- 02
Model
Tekla model built to your numbering, phasing and assembly rules.
- 03
Checks
Model and drawings checked against the design, the execution specification and the query log.
- 04
Drawings
Fabrication and erection documents issued in the agreed language and format.
- 05
Revisions
Comments and design changes clouded, re-issued and tracked in the revision register.
Senior Team Experience
Industrial, refinery and offshore experience from our senior team's prior roles.
Refinery · Onshore
70,000 BPD Diwaniya Refinery Expansion Project
Representative scope: Detailed structural work in Tekla Structures
Oil & Gas · Offshore
Umm Lulu Full Development Project
Representative scope: Offshore structural detailing, Detailed drawings, Shop drawings
Refinery · Onshore
Atyrau Refinery Reconstruction Project
Representative scope: FrameWorks Plus 3D modelling, Concrete and steel buildings, Platforms, pipe racks, stairs and ladders
Photographs are representative industry images.
Common Questions
Related services
Who decides the EN 1090 execution class?
The designer, in the execution specification. EN 1090-2 sets four execution classes, EXC1 to EXC4, with stricter requirements as the class rises. We detail to the class stated and make sure the drawings carry the information it requires; we do not choose the class.
Can you work to NORSOK requirements on offshore packages?
Yes, where the operator specifies them. We detail to NORSOK M-101 and the project's own offshore specifications as issued, with weld and inspection categories taken from the design. Offshore structural design and analysis stay with the responsible engineer.
Can drawings be issued in languages other than English?
We work in English. Where your project needs another language on drawings, we agree the title block, standard notes and a terminology list at the start, so that every sheet uses the same approved wording.
How quickly will we receive a quote?
We reply to quote requests within 24 hours (GCC working day). Send drawings or a scope summary with the deliverables, standards and target dates you have; where inputs are incomplete we list the assumptions we priced and the questions to close.
Can we start with a small trial package?
Yes. Our pilot is one assembly or a 5–10 t package, at a fixed price, delivered in 5 working days from receipt of complete inputs. It lets you check our model, drawing standard and checking on your own project before committing a larger package. NDA on request.
Send Your Drawings
We reply within 24 hours (GCC working day). A scope summary is enough to start; NDA on request.
