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ERW Pipe
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erw black steel pipe also known as circular welded steel pipe, is a straight seam welded steel pipe made from hot-rolled or cold-rolled steel strips through continuous cold bending and high-frequency welding. It is currently the most produced and widely used economical pipe material.Widely used in structural support, fluid transportation, machinery manufacturing, construction, photovoltaics, guardrails, greenhouses, pipelines and other fields.
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JIS G 3101 SS400 Carbon Steel Pipe
JIS G 3101 This Standard specifies the hot rolled steels and hot extruded sections used for general structure such as bridges, ships, rolling stocks and other structures (hereafter referred to as "steel product"). The core steel grades include SS330, SS400, SS490, and SS540, with product forms covering steel plates, steel strips, structural steel, and bars.
EN 10217-2 focuses on Electric welded non‑alloy and alloy steel tubes with specified elevated temperature properties, with P195GH/P235GH/P265GH/16Mo3 as the core steel grades. It meets different safety requirements through TC1/TC2 classification and is the core European standard for selecting high-temperature pipelines in power plants, chemical, and boiler industries. It complements EN 10216-2 (seamless steel pipes) and covers the high-temperature pressure requirements of welded processes.
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