Service area
Zonguldak Steel Doors & Made-to-Measure Villa Door Manufacturing
Zonguldak puts two loads on a door at once: the Black Sea on one side and coal mining with heavy industry on the other. Along the coast at Ereğli, Kilimli and Kozlu the air carries both salt and particulate, and that combination is harder on a finish than either alone.
Districts we serve: Merkez, Ereğli, Çaycuma, Devrek, Alaplı, Kilimli, Kozlu, Gökçebey
Corrosion exposure
The coastal and industrial strip sits in ISO 9223 class C4. Salt aerosol from the sea combines with sulfur compounds and coal dust from the industry, and the persistent humidity keeps that mixture wet on the surface. Inland, around Devrek and Gökçebey, the class settles at C3.
What puts a door to the test in Zonguldak?
The surface almost never dries. Coal dust settles on the paint and holds moisture against it, which turns a slow reaction into a continuous one, and the particulate also works into the lock and the hinge seat.
Delivery and installation
Shipments are planned in batches and the survey is combined with the installation. On industrial sites the installation is scheduled around shift changes, since access to the entrance is easier between shifts.
How we build for Zonguldak
The full coating sequence is applied without shortcuts and hardware is stainless on the coastal strip. We choose a smooth, washable surface rather than a textured one, because texture holds the dust that keeps the surface wet, and we specify a dust-sealed lock body.
Zonguldak Made-to-Measure Steel Door Manufacturing
Every leaf is built the same way regardless of the model: an Ereğli A1-grade 2 mm sheet frame, a 1.5 + 1.5 mm omega-folded monoblock leaf 90 mm thick, and 80 kg/m³ rock wool as the core fill. The lock and hinge areas are reinforced to 3 mm, and the lock itself is an Italian Mottura or Mul-T-Lock unit.
Coal dust holds moisture against the paint, which turns a slow reaction into a continuous one. Flat and building entrance doors here get the full coating sequence and a smooth surface that can be rinsed rather than a textured one.
See steel door modelsZonguldak Villa Doors and Outdoor Entrance Models
An exterior door faces rain, sun and the day-to-night temperature swing head-on, so the cladding decision matters more than anything else. We use compact laminate, composite and marine plywood claddings that hold up outdoors, 304-grade stainless hardware as standard, and Şişecam 5+5 mm laminated glass in glazed models.
On the coastal strip the exterior door meets salt and industrial particulate together. Stainless hardware and stainless fixings are standard, and the leaf gets a multi-layer paint system thick enough to survive regular cleaning.
See villa door modelsZonguldak Pivot Steel Door Systems
A pivot door carries its weight on floor and ceiling bearings instead of hinges, which is what makes sizes above 1.2 m and leaf weights past 200 kg possible. The bearing set is the critical component: we use a load-rated pivot system, and the floor bearing is positioned against the structural slab during installation, not into the screed.
Pivot entrances go into the newer houses along the coast at Ereğli and Alaplı. The bearing is a moving part in a C4 atmosphere and is specified in stainless; dust sealing matters as much as the corrosion rating.
See pivot door modelsWhich door type are you looking for?
Common questions from Zonguldak
Does Bayrakdoor carry out a free site survey in Zonguldak?
Yes, and there are two ways to do it. The online survey is free and immediate: you send photographs and the measurements of the opening, and we return a written quote. For confirmed orders the on-site survey is also free — we combine it with the installation in a single trip to Zonguldak, so the distance costs you nothing.
How many days does delivery take for a steel door or villa door ordered in Zonguldak?
Production takes 20-25 days once the measurements are approved, plus road transport to Zonguldak. The figure moves with the specification: cladding, lock system and non-standard dimensions all affect it. Shipments are planned in batches and the installation date is fixed at the time of the order, so it appears in your written quote rather than being estimated afterwards.
What is the warranty on villa doors used outdoors, and how durable are the materials?
Manufacturing and workmanship defects are covered with no time limit, and a two-year official warranty certificate is issued on delivery. Component warranties follow their own manufacturers — up to 25 years on the lock system. Outdoors, durability comes down to the specification: an Ereğli A1-grade body, a cladding rated for exterior use such as compact laminate or composite, stainless hardware and a multi-layer paint system.
The door surface turns grey and dull quickly. What causes it?
Coal dust settling on the paint and holding moisture against it. A smooth surface that can be rinsed makes a visible difference, and the full coating sequence keeps the protective layer thick enough for that cleaning to be safe.
Is stainless hardware necessary here?
On the coastal strip, yes. Salt and industrial particulate together attack the moving parts first — hinges, cylinder, fixings. Inland at Devrek and Gökçebey the exposure is lower and standard hardware with a good coating is enough.
How the process works in Zonguldak
Just send us the code of the model you like. Our team travels to Zonguldak, measures the width, height and wall thickness of the door opening, and checks the installation conditions on site. We then prepare a written, itemized quote. The site survey is free and doesn't commit you to anything.
Manufacturing happens at our own factory in Gaziosmanpaşa, Istanbul, and our own team handles installation. With no middlemen involved, one company is responsible for measurement, production and service.
Request your free survey for Zonguldak
Send the measurements of the door opening and a photograph over WhatsApp and we will price it the same day — the survey is free and places you under no obligation. If you would rather talk it through, give us a call; a model code is enough to start.