NEWS
1.管及管件的外徑偏(pian)(pian)差(cha)(cha)(cha) 管及管件插(cha)口(kou)(kou)(kou)端外徑DE的正(zheng)偏(pian)(pian)差(cha)(cha)(cha)為＋1mm，適(shi)用于所有(you)壁厚級別管，也適(shi)用于帶插(cha)口(kou)(kou)(kou)的管件，負偏(pian)(pian)差(cha)(cha)(cha)和接(jie)口(kou)(kou)(kou)類(lei)型有(you)關，見6.2.1條。 管與管件插(cha)口(kou)(kou)(kou)不圓度應(ying)為： DN40～DN200，在(zai)DE公差(cha)(cha)(cha)范(fan)圍內； ...
管(guan)件的質量(liang)(liang)等(deng)于(yu)上(shang)述管(guan)件尺寸表格中給出(chu)的質量(liang)(liang)（不含接口(kou)質量(liang)(liang)）加上(shang)所采(cai)用(yong)接口(kou)型式承口(kou)的近似質量(liang)(liang)或法蘭盤的質量(liang)(liang)。...
計(ji)算(suan)質(zhi)量(liang)時，球墨(mo)鑄鐵密度(du)為7050kg/m3，以下表(biao)中所列的承(cheng)口質(zhi)量(liang)數據是近似值(zhi)。短管(guan)質(zhi)量(liang)按實際(ji)長度(du)計(ji)算(suan)，截取性(xing)能試樣后(hou)的管(guan)子(zi)按標準長度(du)計(ji)算(suan)。法蘭管(guan)的質(zhi)量(liang)（見(jian)表(biao)6-49）...
計(ji)算(suan)質(zhi)量(liang)時(shi)，球(qiu)墨鑄鐵密度為(wei)7050kg/m3，以(yi)下表中所列的(de)承口(kou)質(zhi)量(liang)數據(ju)是近(jin)似(si)值。短管質(zhi)量(liang)按實際(ji)長度計(ji)算(suan)，截(jie)取性能試樣(yang)后的(de)管子按標(biao)準長度計(ji)算(suan)。T型(xing)接(jie)口(kou)的(de)質(zhi)量(liang)見(jian)(jian)(jian)表6-46。K型(xing)接(jie)口(kou)的(de)質(zhi)量(liang)見(jian)(jian)(jian)表6-47。NⅡ、SⅡ型(xing)接(jie)口(kou)的(de)質(zhi)量(liang)見(jian)(jian)(jian)表6-48。...
球墨鑄(zhu)鐵(tie)管件(jian)法(fa)(fa)蘭(lan)盤的結構型(xing)(xing)式(shi)(shi)與尺(chi)寸(cun)有以下幾種(zhong)：PN10法(fa)(fa)蘭(lan)盤型(xing)(xing)式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)寸(cun)見(jian)(jian)(jian)表6-42。PN16法(fa)(fa)蘭(lan)盤型(xing)(xing)式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)寸(cun)見(jian)(jian)(jian)表6-43。PN25法(fa)(fa)蘭(lan)盤型(xing)(xing)式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)寸(cun)見(jian)(jian)(jian)表6-44。PN40法(fa)(fa)蘭(lan)盤型(xing)(xing)式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)寸(cun)見(jian)(jian)(jian)表6-45。...
球(qiu)墨(mo)鑄鐵盤(pan)接(jie)管件結構型式與(yu)尺寸有(you)以下幾(ji)種：雙盤(pan)90°（1/4）彎管型式見(jian)(jian)圖(tu)6-34a），尺寸見(jian)(jian)表(biao)(biao)(biao)6-32。雙盤(pan)90°（1/4）地腳彎管型式見(jian)(jian)圖(tu)6-34b），尺寸見(jian)(jian)表(biao)(biao)(biao)6-32。雙盤(pan)45°（1/8）彎管型式見(jian)(jian)圖(tu)6-35，尺寸見(jian)(jian)表(biao)(biao)(biao)6-33。全盤(pan)三通型式見(jian)(jian)圖(tu)6-36，尺寸見(jian)(jian)表(biao)(biao)(biao)6-34。雙...
球(qiu)墨鑄鐵承接管(guan)件結構型(xing)(xing)(xing)式(shi)與尺(chi)寸如下：盤承套管(guan)型(xing)(xing)(xing)式(shi)見(jian)(jian)(jian)圖(tu)(tu)6-19a），尺(chi)寸見(jian)(jian)(jian)表(biao)6-19；盤承短管(guan)型(xing)(xing)(xing)式(shi)見(jian)(jian)(jian)圖(tu)(tu)6-19b），尺(chi)寸見(jian)(jian)(jian)表(biao)6-19。盤插型(xing)(xing)(xing)式(shi)見(jian)(jian)(jian)圖(tu)(tu)6-20a），尺(chi)寸見(jian)(jian)(jian)表(biao)6-20；承套型(xing)(xing)(xing)式(shi)見(jian)(jian)(jian)圖(tu)(tu)6-20b），尺(chi)寸見(jian)(jian)(jian)表(biao)6-20；雙承和承插90°（1/4）彎管(guan)型(xing)(xing)(xing)式(shi)見(jian)(jian)(jian)圖(tu)(tu)6-21，尺(chi)寸見(jian)(jian)(jian)表(biao)6-...
1.長(chang)度(du)a.承(cheng)插直管(guan)長(chang)度(du) 承(cheng)插直管(guan)長(chang)度(du)見表(biao)6-17b.法(fa)蘭管(guan)長(chang)度(du) 法(fa)蘭管(guan)長(chang)度(du)見表(biao)6-18c.管(guan)件長(chang)度(du) 管(guan)件長(chang)度(du)共有兩(liang)個系(xi)(xi)(xi)列的(de)尺寸(cun)，A系(xi)(xi)(xi)列及(ji)(ji)B系(xi)(xi)(xi)列。B系(xi)(xi)(xi)列適用于DN450及(ji)(ji)以下管(guan)件（具體的(de)長(chang)度(du)尺寸(cun)見管(guan)件的(de)結構型式與尺寸(cun)部分）。2.壁厚...
球墨鑄鐵管件(jian)接口(kou)(kou)配套件(jian)型(xing)式與(yu)尺寸主要有(you)以下幾(ji)種：一、接口(kou)(kou)型(xing)式與(yu)尺寸 1. DN40～DN1200T型(xing)接口(kou)(kou)球鐵管的(de)型(xing)式見(jian)(jian)圖6-2，公稱尺寸見(jian)(jian)表6-2；DN1400T型(xing)接口(kou)(kou)球鐵管的(de)型(xing)式見(jian)(jian)圖6-3，公稱尺寸見(jian)(jian)表6-2。 2. K型(xing)接口(kou)(kou)...
用于制(zhi)造管子、管件(jian)和附件(jian)的(de)鑄(zhu)(zhu)鐵，其析(xi)出(chu)的(de)石墨經預處理后成(cheng)明顯球(qiu)(qiu)(qiu)狀的(de)稱(cheng)為球(qiu)(qiu)(qiu)墨鑄(zhu)(zhu)鐵。和灰鑄(zhu)(zhu)鐵相比，球(qiu)(qiu)(qiu)墨鑄(zhu)(zhu)鐵除具有較高的(de)抗拉強度外，還具有灰鑄(zhu)(zhu)鐵材料所不具備的(de)塑性(xing)(xing)、韌性(xing)(xing)和低溫沖(chong)擊性(xing)(xing)。球(qiu)(qiu)(qiu)墨鑄(zhu)(zhu)鐵管（以下簡稱(cheng)球(qiu)(qiu)(qiu)鐵管）、管件(jian)和附件(jian)用途很廣，主要有：輸送水(shui)（包括飲用水(shui)、污水(shui)）管道；...
用于(yu)制造管(guan)(guan)(guan)子、管(guan)(guan)(guan)件(jian)和(he)附件(jian)的(de)(de)鑄鐵(tie)(tie)，其析(xi)出的(de)(de)石墨(mo)(mo)經預處(chu)理(li)后成(cheng)明顯球狀的(de)(de)稱為球墨(mo)(mo)鑄鐵(tie)(tie)。和(he)灰鑄鐵(tie)(tie)相比，球墨(mo)(mo)鑄鐵(tie)(tie)除具(ju)有(you)較高的(de)(de)抗拉強(qiang)度外，還具(ju)有(you)灰鑄鐵(tie)(tie)材料所不具(ju)備(bei)的(de)(de)塑性、韌性和(he)低溫(wen)沖(chong)擊性。球墨(mo)(mo)鑄鐵(tie)(tie)管(guan)(guan)(guan)（以下簡稱球鐵(tie)(tie)管(guan)(guan)(guan)）、管(guan)(guan)(guan)件(jian)和(he)附件(jian)用途很廣，主要有(you)：輸送水(shui)（包括飲(yin)用水(shui)、污水(shui)）管(guan)(guan)(guan)道；...
1.直(zhi)管(guan)(guan)及管(guan)(guan)件(jian)(jian)(jian)材料化學成分 直(zhi)管(guan)(guan)及管(guan)(guan)件(jian)(jian)(jian)的磷含(han)量(liang)應(ying)不(bu)大于0.30％，硫含(han)量(liang)應(ying)不(bu)大于0.10％。2.力學性(xing)(xing)能 直(zhi)管(guan)(guan)及管(guan)(guan)件(jian)(jian)(jian)的抗拉強度應(ying)不(bu)小于150MPa。3.工藝性(xing)(xing)能 直(zhi)管(guan)(guan)應(ying)進行(xing)水壓(ya)試(shi)驗，其試(shi)驗壓(ya)力為(wei)0.2MPa。管(guan)(guan)件(jian)(jian)(jian)的水壓(ya)試(shi)驗由(you)供需(xu)雙方協商...
