Technical guide
B500B or Grade 60: which suits your project?
A practical comparison of strength, ductility and availability, and when consultants specify each.
Read the note: B500B or Grade 60: which suits your project?
Made in Saudi Arabia since 1998, Riyadh 2nd Industrial City
The steel our cities stand on
Rebar, welded mesh, pipes and insulation from our Riyadh factory, delivered to contractors and government projects from three sites across the Kingdom.
- tonnes a year rolling capacity
- 650,000
- sites: one factory, two DCs
- 3
- delivery within three regions
- 48h
- product families
- 4
One factory, three regions, and a delivery schedule that holds
Midmak began with a single rolling line in Riyadh. Today we melt, roll, cut, bend and weld on one site, then distribute from Dammam and Jeddah, so every bar is traceable from heat to site.
- RiyadhFactory, lab and head office on 420,000 m²
- DammamDC holding 40,000 t for the east and the Gulf
- JeddahDC with a cut-and-bend line for the west
Technical catalogue
Four product families with published specifications. Pick a family to see sizes, weights and standards, and download the datasheet for your submittal.
QW-RB-DWG-01Not to scale
High-yield ribbed bars rolled from recycled scrap in our own melt shop, in stock lengths or cut and bent to your bar schedule.
- Standards
- ASTM A615 Gr. 60BS 4449 B500BSASO
- Supplied as
- 12 m lengths, coils up to 2.5 t, or cut and bent
| Diameter | Area | Mass | Stock length |
|---|---|---|---|
| 8 mm | 50.3 mm² | 0.395 kg/m | Coil |
| 10 mm | 78.5 mm² | 0.617 kg/m | Coil / 12 m |
| 12 mm | 113.1 mm² | 0.888 kg/m | 12 m |
| 16 mm | 201.1 mm² | 1.578 kg/m | 12 m |
| 20 mm | 314.2 mm² | 2.466 kg/m | 12 m |
| 25 mm | 490.9 mm² | 3.853 kg/m | 12 m |
| 32 mm | 804.2 mm² | 6.313 kg/m | 12 m |
From scrap to a tagged bundle
Every stage under one roof, and every bundle carries its heat number. If a consultant asks about a bar, we can show its test results in minutes.
Melting
Local scrap melted in a 90-tonne electric arc furnace, heat by heat.
Continuous casting
150 × 150 mm billets, each stamped with its heat number.
Hot rolling
An 18-stand rolling mill with quench cooling to reach B500B strength.
Cut, bend and weld
Automatic cut and bend to bar schedules, and a mesh welder up to 3.2 m wide.
Test and dispatch
Tensile and bend tests on every lot, with a mill certificate on every bundle.
In-house lab
Tensile, bend and spectrometer chemistry on every heat, with instruments calibrated twice a year.
Full traceability
A tag on each bundle links the heat number to the sales order and mill certificate.
Cut and bend to schedule
Send your bar-bending schedule; bars arrive labelled by structural element.
Projects we have supplied
From residential towers to viaducts and hospitals. We list the project type and quantity only, out of respect for our clients' confidentiality.
| Project | Scope | Region | Quantity |
|---|---|---|---|
| 40-storey residential tower | All rebar, cut and bent to schedule | Riyadh | 11,800 t |
| Ring-road viaducts | 25 and 32 mm bar with per-heat certificates | Central region | 24,500 t |
| Government hospital | Fire-main pipe and pipe-section insulation | Eastern region | 38 km |
| Logistics warehouses | A393 industrial floor mesh | Jeddah | 186,000 m² |
| School complex | Rebar, mesh and roof insulation | Dammam | 6,200 t |
Steel made from steel
Our electric arc furnace recycles scrap instead of mining ore. Each year we measure the energy and water we use and publish our 2030 targets.
92%
Recycled scrap in the melt
of melt-shop feed today; the 2030 target is 97%.
2030 target: 97%
35%
Electricity from solar
of office and warehouse load, from 18 MW of rooftop panels.
2030 target: 60%
95%
Cooling water reused
in a closed cooling loop on the rolling mill.
2030 target: 98%
Large shipments come with a recycled-content statement that helps developers with green-building submissions. We ask scrap suppliers for origin documents, and sell furnace slag to road builders instead of landfilling it.
Work where the country's steel is made
More than 70% of our team is Saudi, and half of our shift engineers started in the graduate programme. On-the-job training, housing near the plant and family medical cover.
Insights and news
Short technical notes from our quality and sales engineers, written for contractors and consultants.
Quality
Read a mill test certificate in five minutes
What the heat number means, where to find tensile and chemistry results, and what must match the drawing.
Read the note: Read a mill test certificate in five minutesBuilding code
The energy code and the insulation thickness it asks for
A short table of required U-values for walls and roofs, and which of our slabs meet them.
Read the note: The energy code and the insulation thickness it asks forThe site and portal run on Odoo
How the website works with Odoo
- 1 / 4
RFQs land in the CRM
Every website form becomes an Odoo opportunity, routed to the right regional team.
- 2 / 4
Quotes are signed in the portal
Sales sends the quote from Odoo; the customer signs online and it becomes a sales order.
- 3 / 4
Production and delivery from stock
Stock is reserved or a manufacturing order released, with mill certificates on each delivery.
- 4 / 4
ZATCA invoice and statement
Invoices are cleared electronically and appear in the portal with the statement and overdue balance.
Request a quotation
For contractors, dealers and government buyers. Send estimated quantities and the delivery region, and a sales engineer replies within one working day.
- Factory and head office2nd Industrial City, Street 154, Riyadh
- Dammam DC2nd Industrial City, Dammam
- Jeddah DCIndustrial City, phase 5, Jeddah
- +966 11 000 0000
- sales@midmak.example
Already a customer?
Re-order from your history, sign quotes and download invoices in the portal.