Sahawatthanakit (1988) Co., Ltd.
SAHAWATTHANAKIT(1988) · Make It Smart
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Insights & Industry Knowledge

Articles, news, and technical insights on construction materials, pallet racking, lubricants, and Thai industrial standards — sourced and cited from trusted references.

Shipyard maintenance team selecting anti-corrosion paint systems, zinc anodes, and fire blankets for coastal steel structures

Marine & Shipyard Corrosion Protection Field Guide — Choose the Whole System: Surface Prep (Sa 2.5) · ISO 12944 C5-M/CX/Im2 Paint Systems · Cathodic Protection (Anode/ICCP) · Safe Hot Work + How to Lock In Project Material Pricing

Field guide for shipyard, jetty, and coastal steel-structure maintenance: plan corrosion protection across the whole asset by zone (atmospheric/splash/immersed/buried) — abrasive blast Sa 2.5 per ISO 8501, select an ISO 12944 paint system for C5-M/CX and immersed Im2, design cathodic protection with sacrificial anodes (zinc/aluminium/magnesium) vs ICCP per DNV-RP-B401/ISO 12696, control hot work in confined spaces per NFPA 51B, and lubricate marine machinery — plus how to standardize materials to lock project pricing and delivery.

shipyardmarine corrosioncorrosion protection
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Designing a galvanic cathodic protection system — current demand, anode mass and anode count

Designing a Galvanic Cathodic Protection System — Current Demand, Anode Mass & Anode Count (DNV-RP-B401 / ISO 12696)

A step-by-step guide to sizing a sacrificial-anode corrosion protection system — current density by environment, the anode mass formula (M = I·t·8760 / u·ε), anode count from current output, and the −850 mV / 100 mV decay criteria, with a worked example. References DNV-RP-B401, ISO 12696, NACE SP0169 / ISO 15589, ASTM B418.

Cathodic ProtectionCP DesignSacrificial Anode
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