Blog
Industry content and updates.
8/4/2026
Manhole Cover Theft: Why It Happens and the Permanent Solution
Cast iron manhole covers are stolen for their scrap value. We look at the risks of open manholes, short term deterrents and the permanent fix: composite covers with zero scrap value.
8/4/2026
Rögar or Logar? A Glossary of Turkish Manhole and Grating Terms
Rögar, logar, menhol, mazgal: what do these Turkish infrastructure terms mean? A glossary with English equivalents and the difference between covers and gratings.
8/4/2026
Manhole Cover Installation: Frame Concreting Guide
A step by step guide to concreting a manhole cover frame: setting the level, choosing between C25/30 concrete and rapid setting mortar, curing and reopening times, and common installation mistakes.
8/4/2026
Types of Manhole Covers: The Complete Typology Guide
From the round Ø600 standard to square formats and from ductile iron to composite, this guide maps every manhole cover type with its typical location and trade-offs.
8/4/2026
C250 vs D400: What Is the Difference?
C250 and D400 are the two most frequently confused EN 124 load classes. A criterion based comparison covering test loads, correct application zones and a practical decision rule.
8/4/2026
How to Choose a Manhole Cover: A 4-Step Guide
Load class, clear opening, material and certification — choose the right cover in four steps, with a selector table and checklist.
8/4/2026
Cast Iron vs Composite Manhole Covers: An Impartial Comparison
From a manufacturer of both: load class, theft, corrosion, service life and price — with a selection table.
7/10/2026
EN 124 Load Classes: How to Choose the Right Manhole Cover
All six classes in one table: which road needs which class, what a wrong choice costs, and how to verify the marking.
6/22/2026
Manhole Covers vs. Channel Gratings: Differences and Uses
Both are part of the infrastructure but serve different functions. Which is used where?