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 Product  Specific Product Coverage Philippine National Standard/s (PNS)   Product Image
BI/GI steel pipes Black Iron (BI)and hot-dipped zinc coated (Galvanized Iron-GI)

PNS 26:1992
Steel - Black and hot-dipped zinc coated (galvanized) longitudinally welded steel pipes (for ordinary use) – Specification

bi gi steel pipes