NEWS
1.管(guan)及管(guan)件的(de)(de)外(wai)徑(jing)偏差 管(guan)及管(guan)件插(cha)口(kou)端外(wai)徑(jing)DE的(de)(de)正偏差為＋1mm，適用于所有壁(bi)厚(hou)級別管(guan)，也適用于帶(dai)插(cha)口(kou)的(de)(de)管(guan)件，負偏差和接口(kou)類(lei)型有關，見6.2.1條。 管(guan)與管(guan)件插(cha)口(kou)不圓度應(ying)為： DN40～DN200，在DE公差范圍內； ...
管件的質(zhi)量(liang)(liang)等于上述管件尺寸表格中給出(chu)的質(zhi)量(liang)(liang)（不含接(jie)口質(zhi)量(liang)(liang)）加上所采用接(jie)口型式(shi)承口的近(jin)似質(zhi)量(liang)(liang)或法蘭(lan)盤的質(zhi)量(liang)(liang)。...
計算質量時，球墨(mo)鑄鐵密度為7050kg/m3，以下表中所列的(de)承口質量數據是(shi)近(jin)似值。短(duan)管(guan)質量按實際長度計算，截取性能試樣后的(de)管(guan)子按標(biao)準長度計算。法蘭管(guan)的(de)質量（見表6-49）...
計(ji)(ji)算質(zhi)(zhi)(zhi)量(liang)時，球墨鑄鐵密度為7050kg/m3，以下表(biao)中所列的(de)承口質(zhi)(zhi)(zhi)量(liang)數據(ju)是(shi)近似值。短管質(zhi)(zhi)(zhi)量(liang)按(an)實際長度計(ji)(ji)算，截取(qu)性能試樣(yang)后(hou)的(de)管子按(an)標(biao)準(zhun)長度計(ji)(ji)算。T型接(jie)口的(de)質(zhi)(zhi)(zhi)量(liang)見表(biao)6-46。K型接(jie)口的(de)質(zhi)(zhi)(zhi)量(liang)見表(biao)6-47。NⅡ、SⅡ型接(jie)口的(de)質(zhi)(zhi)(zhi)量(liang)見表(biao)6-48。...
球墨鑄鐵管件法蘭(lan)(lan)盤(pan)(pan)的(de)結構型式(shi)與尺寸(cun)(cun)有以下幾種：PN10法蘭(lan)(lan)盤(pan)(pan)型式(shi)見(jian)(jian)(jian)圖6-40，尺寸(cun)(cun)見(jian)(jian)(jian)表6-42。PN16法蘭(lan)(lan)盤(pan)(pan)型式(shi)見(jian)(jian)(jian)圖6-40，尺寸(cun)(cun)見(jian)(jian)(jian)表6-43。PN25法蘭(lan)(lan)盤(pan)(pan)型式(shi)見(jian)(jian)(jian)圖6-40，尺寸(cun)(cun)見(jian)(jian)(jian)表6-44。PN40法蘭(lan)(lan)盤(pan)(pan)型式(shi)見(jian)(jian)(jian)圖6-40，尺寸(cun)(cun)見(jian)(jian)(jian)表6-45。...
球(qiu)墨鑄(zhu)鐵盤接(jie)管件結(jie)構(gou)型(xing)式(shi)與尺(chi)(chi)寸有(you)以下幾種(zhong)：雙(shuang)盤90°（1/4）彎管型(xing)式(shi)見(jian)(jian)(jian)圖(tu)6-34a），尺(chi)(chi)寸見(jian)(jian)(jian)表(biao)6-32。雙(shuang)盤90°（1/4）地腳彎管型(xing)式(shi)見(jian)(jian)(jian)圖(tu)6-34b），尺(chi)(chi)寸見(jian)(jian)(jian)表(biao)6-32。雙(shuang)盤45°（1/8）彎管型(xing)式(shi)見(jian)(jian)(jian)圖(tu)6-35，尺(chi)(chi)寸見(jian)(jian)(jian)表(biao)6-33。全(quan)盤三通型(xing)式(shi)見(jian)(jian)(jian)圖(tu)6-36，尺(chi)(chi)寸見(jian)(jian)(jian)表(biao)6-34。雙(shuang)...
球墨鑄(zhu)鐵承接管件結構型(xing)式與尺(chi)寸如下：盤承套管型(xing)式見(jian)(jian)(jian)(jian)(jian)(jian)圖(tu)6-19a），尺(chi)寸見(jian)(jian)(jian)(jian)(jian)(jian)表6-19；盤承短管型(xing)式見(jian)(jian)(jian)(jian)(jian)(jian)圖(tu)6-19b），尺(chi)寸見(jian)(jian)(jian)(jian)(jian)(jian)表6-19。盤插型(xing)式見(jian)(jian)(jian)(jian)(jian)(jian)圖(tu)6-20a），尺(chi)寸見(jian)(jian)(jian)(jian)(jian)(jian)表6-20；承套型(xing)式見(jian)(jian)(jian)(jian)(jian)(jian)圖(tu)6-20b），尺(chi)寸見(jian)(jian)(jian)(jian)(jian)(jian)表6-20；雙承和(he)承插90°（1/4）彎(wan)管型(xing)式見(jian)(jian)(jian)(jian)(jian)(jian)圖(tu)6-21，尺(chi)寸見(jian)(jian)(jian)(jian)(jian)(jian)表6-...
1.長(chang)度(du)a.承插直管(guan)長(chang)度(du) 承插直管(guan)長(chang)度(du)見表(biao)6-17b.法蘭管(guan)長(chang)度(du) 法蘭管(guan)長(chang)度(du)見表(biao)6-18c.管(guan)件(jian)長(chang)度(du) 管(guan)件(jian)長(chang)度(du)共有(you)兩個系列(lie)(lie)的(de)尺寸，A系列(lie)(lie)及(ji)B系列(lie)(lie)。B系列(lie)(lie)適(shi)用于DN450及(ji)以下(xia)管(guan)件(jian)（具(ju)體(ti)的(de)長(chang)度(du)尺寸見管(guan)件(jian)的(de)結構(gou)型式與尺寸部分(fen)）。2.壁厚...
球(qiu)墨(mo)鑄(zhu)鐵(tie)(tie)管件接口(kou)(kou)配套件型式與(yu)尺(chi)寸(cun)主要有(you)以(yi)下幾種：一、接口(kou)(kou)型式與(yu)尺(chi)寸(cun) 1. DN40～DN1200T型接口(kou)(kou)球(qiu)鐵(tie)(tie)管的(de)型式見(jian)圖6-2，公稱(cheng)(cheng)尺(chi)寸(cun)見(jian)表6-2；DN1400T型接口(kou)(kou)球(qiu)鐵(tie)(tie)管的(de)型式見(jian)圖6-3，公稱(cheng)(cheng)尺(chi)寸(cun)見(jian)表6-2。 2. K型接口(kou)(kou)...
用于(yu)制造管(guan)子、管(guan)件(jian)和(he)附(fu)件(jian)的鑄(zhu)鐵，其析出的石墨經預處理(li)后成明顯球(qiu)(qiu)狀的稱為(wei)球(qiu)(qiu)墨鑄(zhu)鐵。和(he)灰鑄(zhu)鐵相比，球(qiu)(qiu)墨鑄(zhu)鐵除具(ju)(ju)有較(jiao)高的抗(kang)拉強(qiang)度外，還具(ju)(ju)有灰鑄(zhu)鐵材料所不具(ju)(ju)備的塑性、韌性和(he)低溫沖(chong)擊性。球(qiu)(qiu)墨鑄(zhu)鐵管(guan)（以下(xia)簡稱球(qiu)(qiu)鐵管(guan)）、管(guan)件(jian)和(he)附(fu)件(jian)用途很廣，主(zhu)要有：輸送水（包括飲(yin)用水、污(wu)水）管(guan)道；...
用(yong)(yong)于(yu)制造(zao)管(guan)子、管(guan)件(jian)和(he)(he)附件(jian)的(de)(de)鑄鐵(tie)，其析出的(de)(de)石(shi)墨(mo)(mo)經預(yu)處理后成明顯球(qiu)狀的(de)(de)稱(cheng)為球(qiu)墨(mo)(mo)鑄鐵(tie)。和(he)(he)灰(hui)鑄鐵(tie)相(xiang)比(bi)，球(qiu)墨(mo)(mo)鑄鐵(tie)除具有(you)(you)較高(gao)的(de)(de)抗(kang)拉強度外，還具有(you)(you)灰(hui)鑄鐵(tie)材(cai)料所不(bu)具備的(de)(de)塑性、韌性和(he)(he)低溫沖擊性。球(qiu)墨(mo)(mo)鑄鐵(tie)管(guan)（以下簡稱(cheng)球(qiu)鐵(tie)管(guan)）、管(guan)件(jian)和(he)(he)附件(jian)用(yong)(yong)途很廣，主要有(you)(you)：輸送水(shui)（包括飲(yin)用(yong)(yong)水(shui)、污水(shui)）管(guan)道；...
1.直管(guan)(guan)及管(guan)(guan)件(jian)材料化學(xue)成分 直管(guan)(guan)及管(guan)(guan)件(jian)的磷(lin)含(han)量應(ying)(ying)不(bu)大于(yu)0.30％，硫含(han)量應(ying)(ying)不(bu)大于(yu)0.10％。2.力學(xue)性能 直管(guan)(guan)及管(guan)(guan)件(jian)的抗拉(la)強度應(ying)(ying)不(bu)小于(yu)150MPa。3.工藝性能 直管(guan)(guan)應(ying)(ying)進行水壓試(shi)驗(yan)，其試(shi)驗(yan)壓力為0.2MPa。管(guan)(guan)件(jian)的水壓試(shi)驗(yan)由(you)供需(xu)雙方協商...
