Estimate a steel job in 5 minutes. Not 5 hours.
Upload your structural drawings. Steelflo finds every steel member, detects connections and bolt patterns, weights every piece, and hands you a bid-ready takeoff — before your estimator finishes their morning coffee.
4 minutes. No credit card. No call.
What does your Wednesday actually cost?
Run the numbers. Every fabricator who's done this math has signed up the same day.
Business plan costs $20 a day. Your estimator costs $40 an hour. Steelflo saves them six hours. We are not expensive. We are the cheapest line item on your P&L.
The real cost of a slow Friday
“I submitted two bids. I skipped the third because I ran out of time. That third one was the $480K job.”
— What estimators say every Friday. Here's why it keeps happening.
Three bid invitations land in your inbox. They're due Friday.
You start clicking through 47 sheets at half scale, squinting at W12×26s.
You find a revision on sheet 31 that changes the beam schedule. Recount everything.
Totals don't tie. You count again. You eat dinner at your desk.
You submit two bids. You skipped the third because you ran out of time. That third one was the $480K job.
Three PDFs uploaded.
Three takeoffs complete. Weights, counts, schedules — itemized.
Three bids out the door. You start on bid four.
Bid four is done. You start researching job five.
You bid six jobs. You'll win two. Last month you bid eight all month.
How it works
Three steps. No training. No setup call. Your first takeoff is free.
Drop the PDF
Plans, shop drawings, any size. AISC, EN, BS/IS, AS/NZS, or GB — Steelflo auto-detects your standard and picks imperial or metric automatically.
We do the takeoff
Member-by-member identification. Weight lookup. Connection counts. Coating detection. Every detection is tagged to its sheet and grid line so you can verify in minutes, not hours.
You bid
Export to CSV, copy straight into your estimating template, or price it live in-app. Nesting-optimized order sheet included. Average time from upload to bid-ready output: under 5 minutes.
Everything you need from detection to order
One platform replaces your spreadsheets, shape lookups, manual nesting, and scattered project files.
Dual AI Detection Engine
OCR and vision AI work together to find every beam, column, plate, angle, and brace — plus connections, copes, bolt patterns, and camber. Each detection includes a confidence score and source — you review, you approve.
Handles text labels, CAD annotations, flattened PDFs, and hand-drawn markups. Spatial clustering reassembles split labels that span multiple lines. Connection details are automatically extracted from shop drawings and design drawings alike.
Member Schedule Key Parsing
Reads schedule sheets like S008 — Column (SC) Schedules, Ledger (L) Schedules, Grade Beam, Footing — and resolves marks (SC1, L1, GB1) on plan pages back to actual section sizes automatically. Standard practice on commercial and industrial drawings; nobody else handles this end-to-end.
Gemini 2.5 Pro reads each schedule page with strict JSON schema validation, builds a mark→section dict, validates entries against AISC/EN/ASNZS/BSIS/IS/GB databases, then resolves every callout on the plan pages. Concrete dimensions (footings, grade beams) surface as reviewable items so nothing slips through silently. If a section needs correction, edit the mark once and every detection updates.
Connection, Cope & Bolt Detection
AI reads your shop drawings and identifies connection details automatically — shear tabs, moment connections, base plates, bolt patterns, cope dimensions, and weld specs. Hardware quantities roll up into your BOM alongside steel members.
Works on both shop drawings (full detail extraction) and design drawings (typical connection sheets). Supports US bolt specs (A325, A490) and international grades (8.8, 10.9). Detected hardware feeds directly into pricing — no manual entry for bolts, plates, or anchors.
4,000+ Shapes Across 6 Standards — Including Cold-Formed
AISC, EN, BS/IS, AS/NZS, GB (China), and SSMA cold-formed — auto-detected from your drawings. Hot-rolled W-shapes, HEA, HEB, UB, UC, ISMB, UPN — plus 600S162-54, 362T125-43 and the rest of the SSMA catalog. Built for self-storage, mid-rise multifamily, light commercial — anything with cold-formed framing.
Imperial or metric — the system detects your standard and adapts automatically. Weight lookups, cross-section properties, and unit conversion built in. Mixed drawings with hot-rolled columns plus cold-formed studs all detect on the same pass.
Nesting-Optimized Order Sheets
First-fit decreasing bin packing arranges your cuts onto standard mill lengths. Visual stick utilization bars show exactly where material goes. Waste percentage color-coded — green under 8%, amber under 15%, red above.
Override mill lengths per category, adjust kerf allowance, and download order-ready sheets. Stop over-ordering steel.
Cut Lists with Measured Lengths
Expandable BOM rows show every occurrence with its measured length. Edit per-piece lengths inline. Total weight calculated from actual lengths, not estimates.
Export as CSV or download the PDF with detection boxes overlaid on your original drawings.
Real-Time Pricing Engine
Instant cost estimates based on current market rates. Adjust markup, labor, and material costs to match your shop.
Configure your own rates, overhead, and profit margins. The free calculator at /calculator gives you full AISC shape pricing with no account required.
Automatic Coating & Finish Detection
Detects galvanized, HDG, epoxy, primed, and painted finishes near steel labels. Reads page-wide notes like "ALL STEEL GALVANIZED" and applies them automatically. Lintels default to galvanized.
Coatings show up in your BOM and order sheet — no manual tagging.
Your Entire Operation in One Place
Every drawing, every takeoff, every bid — organized by project and accessible from anywhere. Log in from the office, the shop floor, or the job site. Your work is always there.
Store client contact info, attach documents, and track project status across your entire pipeline. No more digging through email chains or shared drives to find that one PDF. One login, every project, every device.
Fabricators using Steelflo right now
64 shops across North America, the UK, Australia, and New Zealand have completed takeoffs on Steelflo. Here's what they found.
“First time I ran it, I thought the AI was wrong — the count was higher than my own takeoff. I pulled out the drawings to prove it. Turns out I was the one who missed a piece.”
That same job would take an experienced estimator 2–3 days by hand.
Based on 92 completed jobs across AISC, AS/NZS, BS/IS, EN, GB, and SSMA cold-formed drawings.
The objections — and the real answers
"My takeoffs are too complex for AI."
We've run a 97-page AISC structural set with 1,891 steel members. It finished in 42 seconds at the kind of accuracy that makes you double-check us — not the other way around. Your job is not more complex than that one.
"I need to verify everything anyway."
Good — you should. Steelflo gives you a line-by-line output with every member tagged to its sheet and grid line. Verifying takes 20 minutes. Recounting from scratch took eight hours. Those aren't the same task.
"My current process works."
One of our earliest shops — a structural fabricator that had been running manual takeoffs for years — went from bidding 8 jobs a month to over 30 within their first month on Steelflo. Same estimator. Same drawings. Just not spending 6 hours on each one.
"$599 a month is a lot."
$599 a month is $20 a day. Your estimator costs $40 an hour. We save them six hours a day. Run the math: Steelflo pays for itself before your estimator finishes their morning coffee.
Know your quantities already? Price them in seconds.
The free calculator gives you real-time pricing across 4,000+ shapes (hot-rolled and cold-formed) — no account, no PDF required. Use it alongside Steelflo or on its own.
Pricing
Most customers win back the cost of Steelflo on their first extra bid. Start free — first takeoff included, no credit card required.
Lock in current rates before May 30 — prices increase when beta ends.
Free
Manual estimating for individual fabricators
- Manual steel estimating calculator
- 550+ AISC shapes database
- Real-time pricing engine
- Save unlimited estimates
- Client management (CRM)
- 1 AI takeoff trial included
Add AI-powered PDF takeoffs
Pro
- Everything in Free, plus:
- 5 AI takeoffs per month
- Instant steel member detection from PDFs
- Export BOMs to CSV and Excel
- Priority email support
Business
- Everything in Pro, plus:
- 10 AI takeoffs per month
- Priority phone & email support
Enterprise
- Everything in Business, plus:
- 30 AI takeoffs per month
- Dedicated account manager
- Custom AI model training
- SLA guarantee
Frequently Asked Questions
Your competitor just uploaded their first PDF.
Every day you don't run Steelflo is a day they're bidding three jobs to your one. Pick the one you actually want.