EN877:2021 vs. EN877:2006 – What's New?

The construction and drainage industry recently witnessed a significant regulatory shift with the introduction of EN877:2021. This isn't just a minor update; it's a fundamental upgrade in material science and safety protocols. Compared to the outgoing EN877:2006, the new standard imposes stricter benchmarks:

• Tensile Strength increased from 150 MPa to 200 MPa.
• Elongation requirements rose from 1% to 2%.
• New chemical resistance tests (including resistance to pH2 sulfuric acid).
• Mandatory fire resistance upgrades (requiring A1 grade paint).

For components like the Grip Collar—which is critical for locking and preventing axial disconnection under pressure—these changes are a game-changer. The question is: does your current supplier meet these new demands?

The Market's Shortcut vs. DINSEN’s Precision

Most manufacturers still rely on traditional methods: welding, hot rolling, and standard zinc plating. While these processes are cheaper, they create vulnerabilities—weak points that fail under the rigorous testing of EN877:2021. DINSEN doesn't follow the crowd. Here is the DINSEN Grip Collar for critical infrastructure projects reasons.

1. Superior Corrosion Resistance (Riveting vs. Welding)

Competitors weld their collars, a process that generates heat-affected zones, creating micro-cracks and weak points susceptible to corrosion. DINSEN chooses riveting—a cold joining process that preserves the material's original integrity. No weld seam = no weak link. This ensures the coupling grip collar maintains its clamping force without degradation over decades.

2. Cold Rolled vs. Hot Rolled Finish

While others use hot rolling (which leaves a scaly, rough finish), DINSEN utilizes cold rolling for a cleaner, more precise surface. This not only offers better aesthetics but ensures a perfect fit with the pipe. A precise fit means the combi grip collar seals effectively, reducing the risk of leaks under high pressure.

3. The Game-Changer: 316 Stainless Steel vs. Galvanized

This is where DINSEN truly separates itself from the competition. While the market settles for galvanized steel (which eventually rusts and pits), DINSEN manufactures its Grip Collar in 316 stainless steel—the gold standard for corrosion resistance in aggressive environments.

From wastewater treatment plants to underground tunnels and high-rise buildings, 316 stainless steel offers:

• Superior resistance to chlorides and acidic effluents (meeting the new pH2 sulfuric acid test with ease).
• Longer lifespan, reducing maintenance costs and replacement cycles.

The EN877:2021 Upgrade: A Call for Better Engineering

The EN877:2021 upgrade isn't just paperwork; it’s a call for better engineering. The increased tensile and elongation requirements mean that inferior materials will simply fail the certification process.

By choosing the DINSEN Grip Collar, you are not just buying a component; you are investing in compliance, safety, and longevity. Whether you need a robust coupling grip collar for high-pressure mains or a versatile combi grip collar for complex drainage layouts, DINSEN delivers performance that exceeds the EN-877-2021 standard requirements.

Don't settle for yesterday's technology. Specify DINSEN—engineered to last.