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You are welcomed to wholesale or buy customized bottom cap in stock and get bottom cap free sample from us,Website:http://www.wellscreenchina.com, which is one of the best end cap manufacturers and suppliers. Bottom cap(end cap) Bottom cap: A bull nose or plug is always attached to the bottom of casing and screen strings installed in gravel envelope wells. Semi-elliptical tank ends, readily available and inexpensive, provide a convenient fulfillment of this requirement.it also called bottom plugs or end cap.