Overnight support for US fabricators
Outsource Steel Detailing to a Senior Tekla Team
AISC-based shop and erection drawings for US fabricators and EPC teams on industrial and petrochemical work. We detail while you sleep and deliver agreed packages by your morning.
An Overnight Detailing Partner
PetroHill gives US steel fabricators, detailing firms and EPC teams extra detailing capacity without adding headcount. Our office in Lahore is ten to eleven hours ahead of US Central time, so we work through your night: comments sent at the end of your day can be worked overnight and agreed packages delivered by your next morning.
Our senior team brings more than thirty years of experience on heavy industrial and energy steel: refinery expansions, gas-processing units, offshore topsides and brownfield modifications. That experience comes from oil and gas projects in the Middle East and Central Asia rather than US jobs, so for US work we confirm your detailing standards, connection conventions and shop preferences in a scope review before modelling starts.
We detail to the design basis your engineer of record specifies, typically AISC 360 with AISC 303 practice, AWS D1.1 welding symbols and RCSC bolting requirements. Connection design stays with the engineer or your connection designer; we model and draw the approved connections and flag anything that does not close.
Industrial and petrochemical work on the Gulf Coast and elsewhere suits our background best: pipe racks, equipment platforms, process structures, shelters and plant modifications, where member counts are high and fabricators need clean, consistent shop drawings and accurate material lists.
Scope & Deliverables
Typical US packages
- Pipe Racks and Process Structures
- Equipment Platforms, Stairs, Ladders and Handrails
- Industrial Buildings and Shelters
- Plant Modification and Tie-in Steel
- Overflow Detailing for Detailing Firms
- Model-to-Drawing Production on Your Tekla Model
Deliverables
- Tekla Structures Detailing Model
- Erection Drawings and Anchor Bolt Plans
- Shop Drawings: Assembly and Single-Part
- Field Bolt Lists and Material Lists
- NC / DSTV Files Where Contracted
- IFC Exports and Revision Registers
Standards & Specifications
We detail to the edition of each standard named in your contract documents, and to your shop standards. Working to AISC 303 or AWS D1.1 is not AISC certification; certification of the fabricator and design responsibility stay with the project parties.
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 appliedAISC
AISC 303
Code of Standard Practice for Steel Buildings and Bridges
AISC
AISC 360
Specification for Structural Steel Buildings
AWS
AWS D1.1
Structural Welding Code — Steel
RCSC
RCSC Specification
Specification for Structural Joints Using High-Strength Bolts
Client / EPC / asset owner
Project specifications
Client, EPC and Owner Standards and Project Specifications
From Lahore, on your schedule
Working Your Hours
For US clients, we work while you sleep and deliver agreed packages by your morning.
Lahore is UTC+5: one hour ahead of the UAE and two ahead of Saudi Arabia and Qatar, so we work your full business day.
- UTC+5LahoreOur office (no daylight saving)
- UTC−6 / −5US Gulf CoastOvernight working
- UTC−5 / −4US East CoastOvernight working
- UTC+4UAE1 hour behind Lahore
How a Package Runs
Inputs, model, checks, drawings and revisions, with information gaps raised before work proceeds.
- 01
Inputs
Contract drawings, specifications and your shop standards; RFIs listed before modelling.
- 02
Model
Tekla model with your piece marks, phases and connection conventions.
- 03
Checks
Model and drawings checked against the contract drawings and RFI answers.
- 04
Drawings
Erection, shop and field-bolt documents delivered for your morning.
- 05
Revisions
Approval comments and design changes turned around overnight and tracked.
Senior Team Experience
Heavy industrial projects from our senior team's prior roles.
Refinery · Onshore
70,000 BPD Diwaniya Refinery Expansion Project
Representative scope: Detailed structural work in Tekla Structures
Refinery · Onshore
Atyrau Refinery Reconstruction Project
Representative scope: FrameWorks Plus 3D modelling, Concrete and steel buildings, Platforms, pipe racks, stairs and ladders
Oil & Gas · Onshore
Hail & Ghasha Development Project
Representative scope: Structural steel pipe bridges, Platforms, Crossover steel structures
Photographs are representative industry images.
Common Questions
Related services
How does overnight detailing work?
You send comments or new information at the end of your day. We work during your night and deliver the agreed package or revision by your next morning. Overnight delivery applies to packages and revision scopes agreed in advance.
Do you detail to AISC standards?
Yes. We detail to the AISC 360 design basis and AISC 303 practice named in your contract documents, with AWS D1.1 welding and RCSC bolting requirements as specified. Connection design is not included unless separately agreed with a qualified engineer.
Which software do you use?
Tekla Structures for detailing models and drawings, with AutoCAD and Navisworks for drawing work and model review. Versions and exchange formats are confirmed with you before work starts.
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.
