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How does a weld neck flange work in the pipeline system - Knowledge - Shaanxi Fenry Flanges & Fittings Co.,Ltd
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DIN 2636 PN64 Welding Neck Flange | ASTM A234 butt weld pipe fittings,A182 forged pipe fittings,B16.5 weld neck flange,API 5L seamless pipes
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