I’m Amanda Leon, a founder and author, educated in Cognitive Neuroscience. I founded Unrth, a strategic design agency, in 2017, and its industrial clients include GMI Group, a flange, fitting, and pipe manufacturer in Houston, and its family of companies, including Wilhelm Maass in Germany.
The short answer: marketing a flange and fitting manufacturer comes down to three things: one brand system across every company and product line, proof buyers can check, and a steady presence where engineers and buyers already look. GMI Group built its LinkedIn from zero to 61,272 impressions in its first year this way, and its website earned 4,130 clicks from Google between December 2025 and October 2026.
Who Buys Flanges and Fittings
Engineers specify them, purchasing teams and distributors buy them, and quality teams sign off on the paperwork. GMI’s own search data shows what that looks like: among the pages people reached from Google were the cushion and target tees page, API 6A flanges and fittings, and the page to request a mill test report. Buyers search for specs and documentation, not slogans.
What Works for Industrial Manufacturers
One brand system for the whole group. We built brand guidelines for GMI Group, now on version five, and for Wilhelm Maass, now on version four, plus an endorsed “A GMI Group Company” logo line so every company reads as part of one group.
Proof buyers can check. We redesigned the spec and data sheets and added new API, PED, and NSF sections to the certificates page in 2026, so technical buyers find what they need before they call.
Product imagery that looks like the product. Since January 2026, AI-upgraded product photography has carried GMI’s line sheets.
A steady LinkedIn presence. GMI posted roughly once a week through 2025, starting with its first post in January. In 2025 the page earned 61,272 impressions and a 9.2% engagement rate, 23.2% above its competitors.
One kit for every trade show. Line sheets, brochures, flyers, banners, and exhibition panels, including the panels for Stainless Steel World Asia in Singapore in October 2026.
News that keeps working. Three of gmigroup.com’s ten most-clicked pages from Google were news articles about acquisitions and a merger, so we turned the company’s LinkedIn posts and older news into a Recent News archive of 81 posts.
Mistakes That Keep Manufacturers Invisible
Six logos for one group. When every company in a family looks different, buyers can’t tell they’re dealing with one trusted supplier.
Specs buried in old PDFs. If an engineer can’t find the pressure class, material, and certification in under a minute, they find a competitor who makes it easy.
Someone else’s product in the photos. Stock images of generic pipe tell a buyer nothing. Your own flanges, fittings, and shop floor do.
Going quiet between trade shows. Only a small share of buyers are ready to buy at any moment, so the supplier who shows up every week is the one they remember when they are.
What to Measure
Track what the market sees, not just what you post: LinkedIn impressions and engagement against your competitors, which pages buyers reach from Google, how many of those searches are your name versus your products, and whether every company in the group shows up looking like one brand.
What the Client Said
“I am extremely proud of what we have accomplished here and the rebranding that you have helped with.” Griffin Webb, GMI Group
FAQ
How do you market a flange and fitting manufacturer?
Build one brand system across every company, publish the specs and certifications buyers need, and show up every week where engineers and buyers look. The full story is in the GMI Group case study.
Does LinkedIn work for industrial manufacturers?
For GMI Group it did: 61,272 impressions, 399 new followers, and a 9.2% engagement rate in its first year, starting from zero.
What should a manufacturing marketing agency deliver?
Brand guidelines, spec and data sheets, product imagery, trade show materials, a website buyers can use, and a consistent LinkedIn presence, all in one look.
Who does industrial marketing for flange and fitting companies?
Unrth, the strategic design agency Amanda Leon founded in 2017, works with GMI Group and its family of companies, including Wilhelm Maass.
More proof is on the oil and gas marketing results page, and the brain science behind it is in neuromarketing for energy companies.
Want your company found by the buyers who matter? Book a call with Unrth.
