Head, head spinning, stamping head, standard head - Cangzhou Bronze Pipe Sales Co., Ltd. (Diaoya Wen 18731744075 0317-5128359) production head, pressure head, large-diameter head, pressure head, punching head , spinning head, carbon steel head, stainless steel head, carbon steel composite head, oval head, round head, conical heads, dished ends, spherical head, hemispherical head , flat head, no head straight edge, product diameter up to 5000mm head: in the middle and low-pressure containers, and detachable cylinder welded end connection without the structure. 
 Cover: the cylinder with detachable flange end connections such structure. 
 Commonly referred to as head contains the head and cover. 
 Head or cover is divided into convex heads, conical heads (only for some special purpose containers), and flat head (used in pressure vessels, in addition to man-hole and hand hole cover).