# Who we work with

Markdown version of https://bluegreenmaterials.com/en/who-we-work-with. Updated on 2026-11-08.

Steel scrap comes out of almost every industry and ends up in few hands: electric arc furnace mills and foundries. In between there is transport, weighing, cutting and paperwork. This page describes each role in the chain and what we ask for and offer in each one.

## The whole chain

A tonne of scrap goes through five roles before it becomes steel again: whoever generates it, whoever grades and buys it, whoever moves it, whoever weighs it and whoever melts it. Bluegreen buys from the generator, coordinates the rest and sells to the mill, with tax and transport documents at every step. See [how each step is regulated](https://bluegreenmaterials.com/en/regulation).

1. **Generator**: The company where the scrap is created: a plant, a construction site, a workshop, a yard. It sells its material and is paid with a CFDI invoice.
2. **Grading**: We classify the material by type and quality, estimate the weight and make a written offer.
3. **Pickup and transport**: A carrier with a federal permit collects it with a Carta Porte. The outgoing weight is recorded on a scale.
4. **Weighing and delivery**: The mill weighs and inspects it at its plant. Every weight is kept with its ticket and photo.
5. **Melting**: The electric arc furnace melts the scrap into new steel: rebar, sections, wire rod or sheet.

## Scrap generators

We buy from companies with a tax ID (RFC) that generate steel scrap in their operations. Each industry produces different materials with different values. These are the ones we serve, from the most common to the most specialised.

- **Automotive and auto parts** (Sells): Stamping offcuts, clean low residual sheet clippings (the "busheling" type), rejected parts and retired tooling. Usually the highest value scrap because it is so clean.
- **Metalworking and machining** (Sells): Steel turnings and chips, bar and plate offcuts, out of spec parts. Turnings with cutting oil are accepted drained; with excess oil their handling changes.
- **Structures and fabrication** (Sells): Offcuts of sections, beams, angles, heavy plate and tube. Dense material that is easy to load and goes in as heavy scrap.
- **Construction and demolition** (Sells): Rebar, beams, dismantled structures, mesh and steel formwork. It often comes mixed with concrete or wood; it is separated or the price is adjusted for impurities.
- **Dismantling and plant closures** (Sells): Retired machinery, industrial buildings, clean tanks and piping. We coordinate on site cutting and removal in stages.
- **Appliances** (Sells): Sheet offcuts, casings and rejected parts from the line. The steel comes out clean; refrigerant and electrical components are removed first.
- **Maquiladoras and IMMEX companies** (Sells): Production scrap from temporarily imported goods. It has its own customs rules, so its destination is documented before it is sold.
- **Railways** (Sells): Rail, wheels, axles, steel sleepers and retired rolling stock. Only with documents proving ownership: rail is among the most stolen materials in the country.
- **Oil, gas and energy** (Sells): Pipe, structures, towers, tanks and plant equipment. Anything that held hydrocarbons is cleaned and certified before it moves.
- **Mining** (Sells): Machinery, structures, worn grinding balls and wear plates. Large pieces that need cutting and rigging.
- **Ports, shipyards and shipping** (Sells): Ship plate, retired containers, chain and dock structures.
- **Fleets and transport** (Sells): Retired chassis, trailers and dry vans, wheels and suspension parts. Bought with an invoice or vehicle deregistration.
- **Agribusiness** (Sells): Farm machinery and implements, silos and storage structures.
- **Telecoms and power** (Sells): Towers, hardware and structures. Transformers are not accepted without proof they contain no oils with polychlorinated biphenyls.
- **Foundries and forges** (Sells): Returns, risers, failed castings and rejected iron and steel parts.
- **Metal packaging** (Sells): Empty, clean steel drums and containers. If they held hazardous substances, they are decontaminated first.
- **Public sector** (Sells): Government agencies and state companies sell their scrap through tenders or auctions. We take part under the requirements of each call.
- **Collection centres and yards** (Sells): Formal collectors that gather scrap from many sources and sell it by volume. We ask for their environmental registration and the traceability of what they buy.

> **What we ask every generator for** Tax ID (RFC) and tax status certificate, an on site contact, access for pickup and, for sensitive materials (rail, cable, manhole covers, utility equipment), documents proving ownership.

## Steel mills and foundries

On the other side are those who melt the scrap. In Mexico most steel is made in electric arc furnaces, which use scrap as their main raw material. See [how each production route works](https://bluegreenmaterials.com/en/steel).

- **Electric arc furnace long products mills** (Buys): They make rebar, wire rod, sections and bars. The natural destination for heavy melting scrap and structural cuts.
- **Flat products mills** (Buys): They make sheet and plate. They ask for clean scrap low in copper and tin, such as stamping offcuts, because residuals affect thin sheet.
- **Iron and steel foundries** (Buys): They make castings for industry. They buy scrap selected by chemistry, sometimes with a chemical analysis of each load.
- **Stainless and alloy plants** (Buys): They buy stainless separated by series (304, 316, 430) to recover the nickel, chromium and molybdenum it already contains.

We deliver each mill material graded to the specification it asks for, with origin weight, Carta Porte, CFDI and the traceability of the lot. When it is weighed at the plant, the destination weight closes the sale.

## Logistics and services

Moving scrap means moving heavy freight on federal highways. We work with providers that meet what the law asks of each one.

- **Freight carriers** (Service): With a federal freight permit, vehicles within weight and dimension limits, and the ability to issue the Carta Porte supplement.
- **Scales** (Service): Truck scales verified under the weighing instrument standard. Every weighing leaves a ticket with folio, date, time and weight.
- **Rigging** (Service): Cranes, electromagnets, forklifts and loaders to load on site without damaging facilities.
- **Cutting and preparation** (Service): Torch cutting and shears to bring pieces to the size the mill asks for, and baling for light material.
- **Material analysis** (Service): Laboratories and spectrometry equipment to identify alloys, especially stainless.
- **Tax and environmental advice** (Service): Accountants and consultants who support the generator with its CFDI, withholdings, management plan or sustainability reports.

## From one tonne to contracts

**How the service changes with volume**

| Volume | How we work | Documents |
| --- | --- | --- |
| A single lot | Offer per lot, scheduled pickup, payment on settlement | CFDI, Carta Porte, scale ticket, impact certificate |
| Recurring generation | Pickup calendar and an agreed reference price | The above, plus a periodic consolidated report |
| Corporate contract | Master agreement, on site containers where it applies, several plants | The above, plus per plant reports for sustainability |

## What we do not accept

- Material without documents proving its legal origin, or offered by someone without a tax ID.
- Goods that often come from theft: cable, manhole covers, road signs, rail or utility equipment without the owner's paperwork.
- Closed containers, tanks or pipe with fuel, gas or chemical residues without a cleaning certificate.
- Hazardous waste and any material suspected of containing radioactive sources.
- Scrap contaminated with polychlorinated biphenyl oils, asbestos or lead paint without special handling.

These rules protect the generator, the mill and us. Our [terms and conditions](https://bluegreenmaterials.com/en/legal/terms) set them out in detail.

## Frequently asked questions

### Do you buy scrap from individuals?

We buy from companies and from individuals with business activity who have a tax ID and can invoice. The invoice is what lets us trace the origin of the material and meet tax withholding rules.

### What is the minimum volume?

We handle lots from around one tonne. For small volumes we group pickups by area so the freight makes sense.

### Do you work across Mexico?

We serve generators in different states depending on our carriers' routes and where the mills are. Ask for an offer and we will tell you whether we reach your plant.

### Can I sell if I am an IMMEX company?

Yes. Scrap from temporarily imported goods has its own customs rules, so its destination is documented first. We ask for that support before pickup.

### How do I become a carrier or provider?

Write to us with your federal freight permit, your vehicles and your area. We register you in the partner portal once your paperwork is complete.