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304 stainless steel flat-welded flange with neck, full name of flat-welded steel pipe flange with neck, English name: Slip-on for short, SO, flat-welded flange with neck is the same as plate flat-welded flange, which extends steel pipes, pipe fittings, etc. into the flange The inner flange is connected with equipment or pipelines through fillet welds, which are mainly used in chemical, electric power, petroleum pipelines, high-rise construction, coal mines, coking, water pipelines, etc. The production process is mainly divided into forging and casting.
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