In the 2021 steel shortage, some service centers received full allocations from their mills while others were cut to 50% of their normal volume. The difference was not purchase volume. Several smaller service centers received preferential treatment over larger buyers. The difference was the relationship: the service centers that had been loyal, communicative, and easy to work with during normal markets were rewarded during the shortage.
Beyond the Transaction
Most service centers treat mill relationships as purely transactional. You call the rep, get a price, place an order, receive the material, repeat. This approach works fine in balanced markets. It fails spectacularly during shortages, quality problems, or when you need a favor.
A strategic mill relationship goes beyond transactions. It includes sharing your forecast (giving the mill visibility into your planned purchases for the next 3 to 6 months), providing feedback on quality and delivery performance (mills cannot fix problems they do not know about), paying on time every time (nothing builds credibility faster), being willing to take material during soft periods (the mill remembers who helped fill the book when demand was weak), and maintaining consistent communication (calling regularly, not just when you need something).
Diversification vs. Concentration
Concentrating your purchases with one or two mills gives you leverage through volume but creates supply risk. Spreading purchases across many mills reduces risk but diminishes your importance to each one. The right balance depends on your size and product mix.
A general guideline: for your core products (the items that represent 70% of your tonnage), maintain 2 to 3 qualified mill sources. Buy 50% to 60% from your primary, 25% to 30% from your secondary, and keep a third source qualified for 10% to 15% as a backup. This gives your primary mill enough volume to care about you while ensuring you have alternatives if they cannot deliver.
For specialty products, you may have only one viable domestic source. In that case, develop the relationship deeply and maintain a larger safety stock to buffer against supply disruptions.
The Annual Business Review
Schedule a formal annual review with each major mill supplier. Prepare for this meeting with data: your total purchases for the year, their on-time delivery performance, quality metrics (rejection rates, out-of-spec material), pricing competitiveness versus other sources, and a forecast for the coming year.
Use this meeting to negotiate, but also to listen. Ask what the mill is investing in (new capacity, new products, new capabilities). Ask about their view of the market for the next 12 months. Ask what you can do to be a better customer. The answers inform your purchasing strategy and give you market intelligence that most of your competitors do not have because they never ask.
When Things Go Wrong
Quality problems, late deliveries, and pricing disputes are inevitable. How you handle them defines the relationship. Document the issue clearly: what happened, what it cost you, and what you expect as resolution. Present it professionally, not emotionally. A well-documented quality claim with photos, measurements, and cost calculations gets resolved faster than a frustrated phone call.
Escalate appropriately. Start with your mill rep. If they cannot resolve it, go to their regional sales manager. Reserve senior-level escalation for significant issues. Going over your rep's head for every minor problem damages the working relationship and reduces your rep's willingness to go to bat for you on the issues that really matter.
The mills that supply your steel are as important to your business as the customers who buy it. Manage both relationships with the same strategic attention and the same commitment to mutual benefit. The service centers that do this consistently get better pricing, better allocations, better quality, and better support during the inevitable rough patches.