In the early 20th century, galvanized piping replaced previously-used cast iron and lead in cold-water plumbing Typically, galvanized piping rusts from the inside out, building up layers of plaque on the inside of the piping, causing both water pressure problems and eventual pipe failure. Hot extrusion process meets stringent product standards, widely used in military, nuclear power, petrochemical, and other cutting-edge areas of aviation and a variety of stainless steel tubes, high-quality high-temperature corrosion steel pipe, steel pipe and other steel titanium and titanium alloy products. Stainless steel angle bars are widely used for engineering structures, industrial tools, machinery parts, building construction etc.
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Standard:AISI, ASTM, DIN, GB, JIS Grade:600 Series Thickness:0.13-0.8 mm Model Number:ppgi steel coil Type:Steel Coil Technique:Cold Rolled Surface Treatment:Coated Application:Container Plate Special Use:High-strength Steel Plate Width:600-1250 mm Length:as customer require ppgi type:ppgi steel coil ppgi Technique:hot dipped ppgi ppgi Surface Treatment:galvanized and coated Zinc coating of ppgi:40-180g/m Special Use of ppgi:High-strength Steel Plate Type of ppgi steel coil:ppgi steel coil and ppgi sheet Certification of ppgi:ISO. STEEL / Flat Products / Hot Dipped Galvanized Steel (GI) Coils & Sheets. Uncommon for water supply piping but found as gas piping, oil piping, and some other uses, is black iron pipe – essentially the same material as galvanized iron piping, but without the protective galvanized zinc coating.
The study, which was recently published online in the scientific journal Environmental Engineering Science, notes that when copper pipes are fitted upstream from galvanized steel piping, lead release from zinc coating on galvanized pipes downstream can be exacerbated. When high concentrations of lead are detected in drinking water, they typically originate from lead pipes or from bronze and brass plumbing fittings that contain lead, but now a new study has revealed that galvanized steel pipes coated with a zinc coating that contains lead can also be a significant source of lead contamination in drinking water over the long-term. The zinc coating causes internal rusting, which can lead to reduced water pressure over time as the galvanized pipes clog.
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