
Anodes & Cathodic Protection (CP)
4 anode types — shipbuilding, ship repair, bridge, building & concrete structure repair
Sahawatthanakit (1988) supplies, designs, and installs full-line Galvanic Cathodic Protection (CP) and sacrificial anodes — Concrete · Aluminium · Zinc · Magnesium Anode — anodes Thai-made to ISO 9001:2015 / TIS, with CP systems designed to DNV-RP-B401 and ISO 12696. Used in shipbuilding and ship repair (hulls, sea chests), structure and building repair (rebar in concrete), piers, river bridges, and buried pipelines — public and private projects nationwide. Anodes are sacrificial by design, so they are replaced on each maintenance / dry-docking cycle. Based in Nonthaburi, with nationwide delivery plus on-site design and installation — send your site conditions in chat for a quote right away.
- Concrete Anode (standard/high-output) — zinc in alkaline mortar pH ≥14 (lithium hydroxide), protection radius ≥60 cm, service life ≥10 years — TIS 3029-2563 / ASTM B418 Type II / ISO 12696
- Aluminium Anode (Al-Zn-In) — ship hulls, piers, offshore platforms in seawater/brackish water — TIS 3359-2563 / DNV-GL (GL Section 7)
- Zinc Anode 99.995% purity — ship hulls, sea chests, condenser seawater side — MIL-A-18001K / GL-Zn1
















