Structural Steel Clamshell Welding for Pile Repair and Reinforcement

What is Welding Clamshells?

Prefabricated steel clamshell half-sections welded around damaged or corroded piles by certified underwater welders — restoring structural section and load capacity in situ without pile extraction.

What's Included

Pile damage survey — UT thickness measurement, visual inspection
Clamshell design and fabrication to pile diameter and damage extent
Surface preparation — mechanical cleaning to bare metal
Clamshell positioning and tack welding under SSBA
Full structural weld completion to WPQR — AWS D3.6M
Post-weld inspection — UT, MPI, or visual as specified
Photographic and weld inspection record for client handover

Why This Matters

Clamshell welding is the most structurally robust pile repair method available in situ. It restores full load capacity, avoids pile extraction and replacement, and can be completed in a fraction of the time and cost of conventional repair methods.

Related Services in Pile Repair & Protection

HDPE Pile Wrapping

Cost-effective HDPE sheet wrapping mechanically fixed around the pile — continuous corrosion barrier with no dry-docking required.

HDPE Pile Sleeving

Prefabricated two-half HDPE sleeve sections clamped around the pile and grouted — rigid annular void fill for structural load transfer.

Epoxy Coating

Marine-grade two-part epoxy applied by trained divers to cleaned pile surfaces — cathodic disbondment and hydrostatic pressure resistant.

Part of

Marine Construction

KCC delivers specialist marine construction works across Hong Kong and the region — from seawall rep

View all Marine Construction services

IMCA ADCI HSE HKCP

IMCA · ADCI · HSE · HKCP Compliant

All diving operations conducted to IMCA, ADCI, HSE & HKCP standards

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