DN250合金管帽封頭 包(bao)括(kuo)凸(tu)(tu)形(xing)(xing)(xing)管帽(mao)、錐殼(ke)、變(bian)徑段、平蓋及緊縮口(kou)的(de)設計(ji)。凸(tu)(tu)形(xing)(xing)(xing)管帽(mao)包(bao)括(kuo)：半球(qiu)形(xing)(xing)(xing)管帽(mao)、橢圓(yuan)形(xing)(xing)(xing)管帽(mao)、碟形(xing)(xing)(xing)管帽(mao)和球(qiu)冠(guan)形(xing)(xing)(xing)管帽(mao)。從受力角度(du)(du)看(kan)凸(tu)(tu)形(xing)(xing)(xing)管帽(mao)中從半球(qiu)形(xing)(xing)(xing)管帽(mao)逐(zhu)漸不好(hao)，但從制造(zao)難(nan)度(du)(du)上看(kan)，逐(zhu)漸好(hao)制造(zao)。 　　

合金管帽與不(bu)銹鋼(gang)(gang)彎頭的(de)(de)使用(yong)價值不(bu)同(tong)(tong)，在用(yong)戶中的(de)(de)印象和滿意(yi)度也會不(bu)同(tong)(tong)，所以(yi)在使用(yong)管(guan)帽和不(bu)銹鋼(gang)(gang)彎頭時(shi)要注(zhu)意(yi)其不(bu)同(tong)(tong)的(de)(de)性能和特(te)點，針對不(bu)同(tong)(tong)的(de)(de)環境(jing)和使用(yong)范圍進(jin)行使用(yong)。