午夜成(cheng)人(ren)亞洲(zhou)理倫片在線觀(guan)看(kan):常壓人(ren)孔

人(ren)孔(kong)(kong)(kong)(kong)是指用于(yu)(yu)人(ren)員進出設(she)備(bei)(bei)以(yi)便安裝(zhuang)、檢修和(he)(he)(he)安全(quan)檢查的開(kai)孔(kong)(kong)(kong)(kong)結(jie)構。主要由短(duan)筒節（或短(duan)管）、法蘭(lan)和(he)(he)(he)帶(dai)把手(shou)的人(ren)孔(kong)(kong)(kong)(kong)蓋組(zu)成(cheng)。從(cong)安全(quan)檢查考慮，壓(ya)力容器(qi)要求開(kai)設(she)的人(ren)孔(kong)(kong)(kong)(kong)數(shu)及其小尺寸見“檢查孔(kong)(kong)(kong)(kong)”。人(ren)孔(kong)(kong)(kong)(kong)材料有(you)碳鋼(gang)(gang)和(he)(he)(he)不銹(xiu)鋼(gang)(gang)。按(an)受(shou)壓(ya)情況人(ren)孔(kong)(kong)(kong)(kong)分為常壓(ya)和(he)(he)(he)受(shou)壓(ya)人(ren)孔(kong)(kong)(kong)(kong)；按(an)形狀人(ren)孔(kong)(kong)(kong)(kong)分為圓(yuan)形、橢圓(yuan)形和(he)(he)(he)矩(ju)(ju)形人(ren)孔(kong)(kong)(kong)(kong)，矩(ju)(ju)形人(ren)孔(kong)(kong)(kong)(kong)僅(jin)適用于(yu)(yu)常壓(ya)設(she)備(bei)(bei)；按(an)安裝(zhuang)位置人(ren)孔(kong)(kong)(kong)(kong)分為水平和(he)(he)(he)垂直安裝(zhuang)人(ren)孔(kong)(kong)(kong)(kong)；人(ren)孔(kong)(kong)(kong)(kong)蓋固定(ding)方式有(you)迥轉蓋和(he)(he)(he)吊蓋；人(ren)孔(kong)(kong)(kong)(kong)開(kai)后速度有(you)普通式和(he)(he)(he)快(kuai)開(kai)式，人(ren)孔(kong)(kong)(kong)(kong)結(jie)構和(he)(he)(he)尺寸一般(ban)都已標(biao)準化，可參照有(you)關手(shou)冊選用或設(she)計。