NEWS
1.管及管件的外徑偏(pian)差(cha) 管及管件插(cha)口(kou)端(duan)外徑DE的正(zheng)偏(pian)差(cha)為(wei)＋1mm，適用(yong)于所有壁厚(hou)級(ji)別管，也適用(yong)于帶插(cha)口(kou)的管件，負偏(pian)差(cha)和接口(kou)類型(xing)有關，見(jian)6.2.1條。 管與(yu)管件插(cha)口(kou)不圓度(du)應為(wei)： DN40～DN200，在(zai)DE公(gong)差(cha)范圍(wei)內(nei)； ...
管件(jian)的質(zhi)量等于上述管件(jian)尺寸表(biao)格中給出的質(zhi)量（不含接(jie)口(kou)質(zhi)量）加上所采用接(jie)口(kou)型(xing)式承口(kou)的近似(si)質(zhi)量或法蘭盤(pan)的質(zhi)量。...
計算(suan)質(zhi)量(liang)(liang)時，球墨鑄鐵密度為7050kg/m3，以下(xia)表中所列的承口質(zhi)量(liang)(liang)數據是近似值。短管質(zhi)量(liang)(liang)按實際長度計算(suan)，截取性能試樣后的管子(zi)按標準長度計算(suan)。法(fa)蘭管的質(zhi)量(liang)(liang)（見(jian)表6-49）...
計(ji)(ji)算質(zhi)量時(shi)，球(qiu)墨鑄鐵密(mi)度為(wei)7050kg/m3，以下表(biao)中所(suo)列的(de)(de)承口(kou)(kou)(kou)質(zhi)量數據(ju)是近(jin)似值。短管(guan)質(zhi)量按實(shi)際長度計(ji)(ji)算，截(jie)取(qu)性能試(shi)樣后的(de)(de)管(guan)子(zi)按標(biao)準(zhun)長度計(ji)(ji)算。T型(xing)(xing)接口(kou)(kou)(kou)的(de)(de)質(zhi)量見表(biao)6-46。K型(xing)(xing)接口(kou)(kou)(kou)的(de)(de)質(zhi)量見表(biao)6-47。NⅡ、SⅡ型(xing)(xing)接口(kou)(kou)(kou)的(de)(de)質(zhi)量見表(biao)6-48。...
球墨鑄鐵(tie)管件法(fa)蘭盤(pan)(pan)(pan)的結構型(xing)(xing)式(shi)與尺寸(cun)有以下幾種：PN10法(fa)蘭盤(pan)(pan)(pan)型(xing)(xing)式(shi)見(jian)圖6-40，尺寸(cun)見(jian)表(biao)6-42。PN16法(fa)蘭盤(pan)(pan)(pan)型(xing)(xing)式(shi)見(jian)圖6-40，尺寸(cun)見(jian)表(biao)6-43。PN25法(fa)蘭盤(pan)(pan)(pan)型(xing)(xing)式(shi)見(jian)圖6-40，尺寸(cun)見(jian)表(biao)6-44。PN40法(fa)蘭盤(pan)(pan)(pan)型(xing)(xing)式(shi)見(jian)圖6-40，尺寸(cun)見(jian)表(biao)6-45。...
球墨鑄鐵盤(pan)(pan)接管(guan)件結(jie)構(gou)型式與尺(chi)寸有以下(xia)幾(ji)種：雙(shuang)盤(pan)(pan)90°（1/4）彎管(guan)型式見(jian)圖(tu)6-34a），尺(chi)寸見(jian)表(biao)(biao)6-32。雙(shuang)盤(pan)(pan)90°（1/4）地腳彎管(guan)型式見(jian)圖(tu)6-34b），尺(chi)寸見(jian)表(biao)(biao)6-32。雙(shuang)盤(pan)(pan)45°（1/8）彎管(guan)型式見(jian)圖(tu)6-35，尺(chi)寸見(jian)表(biao)(biao)6-33。全盤(pan)(pan)三(san)通型式見(jian)圖(tu)6-36，尺(chi)寸見(jian)表(biao)(biao)6-34。雙(shuang)...
球墨(mo)鑄鐵承(cheng)(cheng)(cheng)接管件結構(gou)型(xing)式(shi)(shi)與(yu)尺寸(cun)(cun)如(ru)下(xia)：盤承(cheng)(cheng)(cheng)套管型(xing)式(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-19a），尺寸(cun)(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-19；盤承(cheng)(cheng)(cheng)短管型(xing)式(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-19b），尺寸(cun)(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-19。盤插(cha)(cha)型(xing)式(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-20a），尺寸(cun)(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-20；承(cheng)(cheng)(cheng)套型(xing)式(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-20b），尺寸(cun)(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-20；雙承(cheng)(cheng)(cheng)和承(cheng)(cheng)(cheng)插(cha)(cha)90°（1/4）彎(wan)管型(xing)式(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-21，尺寸(cun)(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-...
1.長(chang)(chang)度(du)a.承插直管長(chang)(chang)度(du) 承插直管長(chang)(chang)度(du)見表(biao)6-17b.法(fa)蘭管長(chang)(chang)度(du) 法(fa)蘭管長(chang)(chang)度(du)見表(biao)6-18c.管件(jian)(jian)長(chang)(chang)度(du) 管件(jian)(jian)長(chang)(chang)度(du)共(gong)有兩個系列(lie)的(de)尺(chi)寸，A系列(lie)及B系列(lie)。B系列(lie)適(shi)用于DN450及以下管件(jian)(jian)（具體的(de)長(chang)(chang)度(du)尺(chi)寸見管件(jian)(jian)的(de)結構型式與(yu)尺(chi)寸部分(fen)）。2.壁(bi)厚...
球墨鑄鐵管(guan)件(jian)(jian)接(jie)口配套件(jian)(jian)型(xing)式與尺(chi)寸(cun)主要有以(yi)下幾(ji)種：一、接(jie)口型(xing)式與尺(chi)寸(cun) 1. DN40～DN1200T型(xing)接(jie)口球鐵管(guan)的型(xing)式見圖6-2，公稱尺(chi)寸(cun)見表6-2；DN1400T型(xing)接(jie)口球鐵管(guan)的型(xing)式見圖6-3，公稱尺(chi)寸(cun)見表6-2。 2. K型(xing)接(jie)口...
用于制造管(guan)(guan)子、管(guan)(guan)件(jian)(jian)(jian)和附件(jian)(jian)(jian)的(de)鑄(zhu)(zhu)鐵，其析出的(de)石墨(mo)經預處理后成明顯(xian)球(qiu)(qiu)狀的(de)稱為(wei)球(qiu)(qiu)墨(mo)鑄(zhu)(zhu)鐵。和灰(hui)鑄(zhu)(zhu)鐵相比，球(qiu)(qiu)墨(mo)鑄(zhu)(zhu)鐵除具(ju)有(you)(you)較(jiao)高的(de)抗拉強度外(wai)，還具(ju)有(you)(you)灰(hui)鑄(zhu)(zhu)鐵材(cai)料所不具(ju)備的(de)塑性、韌性和低溫沖擊性。球(qiu)(qiu)墨(mo)鑄(zhu)(zhu)鐵管(guan)(guan)（以下簡(jian)稱球(qiu)(qiu)鐵管(guan)(guan)）、管(guan)(guan)件(jian)(jian)(jian)和附件(jian)(jian)(jian)用途很廣，主要有(you)(you)：輸送(song)水(shui)（包(bao)括(kuo)飲用水(shui)、污水(shui)）管(guan)(guan)道；...
用(yong)(yong)于(yu)制造管子、管件(jian)和附(fu)件(jian)的(de)鑄(zhu)鐵(tie)(tie)(tie)，其析出(chu)的(de)石墨經預(yu)處理(li)后成明顯球狀的(de)稱為球墨鑄(zhu)鐵(tie)(tie)(tie)。和灰鑄(zhu)鐵(tie)(tie)(tie)相比，球墨鑄(zhu)鐵(tie)(tie)(tie)除(chu)具(ju)(ju)有(you)較高的(de)抗(kang)拉(la)強度外，還具(ju)(ju)有(you)灰鑄(zhu)鐵(tie)(tie)(tie)材料所不具(ju)(ju)備的(de)塑性、韌性和低溫沖擊性。球墨鑄(zhu)鐵(tie)(tie)(tie)管（以下簡稱球鐵(tie)(tie)(tie)管）、管件(jian)和附(fu)件(jian)用(yong)(yong)途很廣(guang)，主要有(you)：輸(shu)送(song)水（包括飲用(yong)(yong)水、污水）管道；...
1.直管(guan)(guan)及(ji)管(guan)(guan)件(jian)材(cai)料化學成(cheng)分 直管(guan)(guan)及(ji)管(guan)(guan)件(jian)的(de)磷含(han)量(liang)應(ying)不大(da)(da)于0.30％，硫含(han)量(liang)應(ying)不大(da)(da)于0.10％。2.力(li)學性能(neng) 直管(guan)(guan)及(ji)管(guan)(guan)件(jian)的(de)抗拉(la)強(qiang)度應(ying)不小于150MPa。3.工藝性能(neng) 直管(guan)(guan)應(ying)進行水壓試(shi)驗，其試(shi)驗壓力(li)為0.2MPa。管(guan)(guan)件(jian)的(de)水壓試(shi)驗由(you)供(gong)需雙方協(xie)商...
