Types of Anchor Chains, Marine Chains
Your Chain Explained Your Chain Explained Steve D'Antonio. The most popular varieties of galvanized-steel windlass chain include high-test or grade 40 (usually marked HT, G4, or HT4); triple B or grade 30 (marked as BBB or 3B); and proof coil, also grade 30 (often marked PC, PC3, or G3). Each has attributes and shortcomings. BBB and proof coil are made from low-carbon steel; …
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