午夜成人亞洲理(li)倫片(pian)在線觀看:常壓人孔

人(ren)(ren)(ren)孔(kong)(kong)是指用(yong)于人(ren)(ren)(ren)員進出設備以(yi)便安(an)裝、檢(jian)修和安(an)全檢(jian)查(cha)(cha)的(de)開孔(kong)(kong)結構(gou)。主要由短筒節（或短管）、法蘭和帶把手(shou)的(de)人(ren)(ren)(ren)孔(kong)(kong)蓋(gai)組(zu)成。從安(an)全檢(jian)查(cha)(cha)考慮，壓力容器要求開設的(de)人(ren)(ren)(ren)孔(kong)(kong)數(shu)及其(qi)小尺(chi)寸見“檢(jian)查(cha)(cha)孔(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)材料有碳(tan)鋼和不銹(xiu)鋼。按(an)受(shou)壓情況人(ren)(ren)(ren)孔(kong)(kong)分為常(chang)壓和受(shou)壓人(ren)(ren)(ren)孔(kong)(kong)；按(an)形(xing)(xing)狀(zhuang)人(ren)(ren)(ren)孔(kong)(kong)分為圓(yuan)(yuan)形(xing)(xing)、橢圓(yuan)(yuan)形(xing)(xing)和矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)，矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)僅適用(yong)于常(chang)壓設備；按(an)安(an)裝位(wei)置人(ren)(ren)(ren)孔(kong)(kong)分為水(shui)平和垂直安(an)裝人(ren)(ren)(ren)孔(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)蓋(gai)固定方式(shi)有迥轉蓋(gai)和吊(diao)蓋(gai)；人(ren)(ren)(ren)孔(kong)(kong)開后速度有普通(tong)式(shi)和快(kuai)開式(shi)，人(ren)(ren)(ren)孔(kong)(kong)結構(gou)和尺(chi)寸一般都已標準(zhun)化，可參(can)照有關手(shou)冊選用(yong)或設計。