NEWS
1.管(guan)(guan)(guan)及管(guan)(guan)(guan)件(jian)的(de)外徑偏(pian)(pian)差(cha)(cha)(cha) 管(guan)(guan)(guan)及管(guan)(guan)(guan)件(jian)插口端外徑DE的(de)正偏(pian)(pian)差(cha)(cha)(cha)為＋1mm，適用于所有壁厚級(ji)別(bie)管(guan)(guan)(guan)，也適用于帶插口的(de)管(guan)(guan)(guan)件(jian)，負偏(pian)(pian)差(cha)(cha)(cha)和接口類型有關，見6.2.1條。 管(guan)(guan)(guan)與(yu)管(guan)(guan)(guan)件(jian)插口不圓度應為： DN40～DN200，在(zai)DE公(gong)差(cha)(cha)(cha)范圍內； ...
管(guan)件的(de)(de)質量(liang)(liang)等于上述管(guan)件尺寸表(biao)格中給出的(de)(de)質量(liang)(liang)（不含接(jie)(jie)口質量(liang)(liang)）加上所采用接(jie)(jie)口型式承口的(de)(de)近似質量(liang)(liang)或法(fa)蘭盤的(de)(de)質量(liang)(liang)。...
計算(suan)質(zhi)量(liang)(liang)(liang)時，球墨(mo)鑄(zhu)鐵密度為7050kg/m3，以下表(biao)中(zhong)所列(lie)的(de)承口質(zhi)量(liang)(liang)(liang)數(shu)據是近似值。短(duan)管質(zhi)量(liang)(liang)(liang)按(an)實(shi)際長(chang)度計算(suan)，截取性能試樣后的(de)管子(zi)按(an)標準長(chang)度計算(suan)。法(fa)蘭管的(de)質(zhi)量(liang)(liang)(liang)（見表(biao)6-49）...
計(ji)算(suan)質(zhi)量(liang)(liang)時，球墨鑄鐵密度(du)為7050kg/m3，以下表(biao)中(zhong)所列的承口(kou)質(zhi)量(liang)(liang)數據是近似值。短管質(zhi)量(liang)(liang)按實(shi)際(ji)長(chang)度(du)計(ji)算(suan)，截取性(xing)能試樣后的管子按標準長(chang)度(du)計(ji)算(suan)。T型接(jie)口(kou)的質(zhi)量(liang)(liang)見(jian)(jian)表(biao)6-46。K型接(jie)口(kou)的質(zhi)量(liang)(liang)見(jian)(jian)表(biao)6-47。NⅡ、SⅡ型接(jie)口(kou)的質(zhi)量(liang)(liang)見(jian)(jian)表(biao)6-48。...
球墨鑄鐵管件法(fa)(fa)蘭(lan)盤(pan)的結(jie)構型式(shi)(shi)與尺(chi)(chi)寸(cun)有以下幾種：PN10法(fa)(fa)蘭(lan)盤(pan)型式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)(chi)寸(cun)見(jian)(jian)(jian)表6-42。PN16法(fa)(fa)蘭(lan)盤(pan)型式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)(chi)寸(cun)見(jian)(jian)(jian)表6-43。PN25法(fa)(fa)蘭(lan)盤(pan)型式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)(chi)寸(cun)見(jian)(jian)(jian)表6-44。PN40法(fa)(fa)蘭(lan)盤(pan)型式(shi)(shi)見(jian)(jian)(jian)圖(tu)6-40，尺(chi)(chi)寸(cun)見(jian)(jian)(jian)表6-45。...
球墨(mo)鑄鐵盤接管(guan)件結構(gou)型(xing)式與尺(chi)(chi)(chi)寸(cun)有以下幾種：雙盤90°（1/4）彎(wan)(wan)管(guan)型(xing)式見(jian)圖6-34a），尺(chi)(chi)(chi)寸(cun)見(jian)表(biao)6-32。雙盤90°（1/4）地腳彎(wan)(wan)管(guan)型(xing)式見(jian)圖6-34b），尺(chi)(chi)(chi)寸(cun)見(jian)表(biao)6-32。雙盤45°（1/8）彎(wan)(wan)管(guan)型(xing)式見(jian)圖6-35，尺(chi)(chi)(chi)寸(cun)見(jian)表(biao)6-33。全盤三(san)通型(xing)式見(jian)圖6-36，尺(chi)(chi)(chi)寸(cun)見(jian)表(biao)6-34。雙...
球墨鑄鐵承(cheng)(cheng)接管(guan)件結(jie)構型(xing)式(shi)(shi)(shi)與尺(chi)(chi)寸(cun)如下：盤承(cheng)(cheng)套管(guan)型(xing)式(shi)(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-19a），尺(chi)(chi)寸(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-19；盤承(cheng)(cheng)短(duan)管(guan)型(xing)式(shi)(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-19b），尺(chi)(chi)寸(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-19。盤插(cha)(cha)型(xing)式(shi)(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-20a），尺(chi)(chi)寸(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-20；承(cheng)(cheng)套型(xing)式(shi)(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-20b），尺(chi)(chi)寸(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-20；雙(shuang)承(cheng)(cheng)和承(cheng)(cheng)插(cha)(cha)90°（1/4）彎管(guan)型(xing)式(shi)(shi)(shi)見(jian)(jian)(jian)(jian)圖(tu)6-21，尺(chi)(chi)寸(cun)見(jian)(jian)(jian)(jian)表(biao)(biao)(biao)6-...
1.長(chang)(chang)(chang)(chang)度(du)(du)a.承(cheng)插(cha)直(zhi)管(guan)(guan)(guan)長(chang)(chang)(chang)(chang)度(du)(du) 承(cheng)插(cha)直(zhi)管(guan)(guan)(guan)長(chang)(chang)(chang)(chang)度(du)(du)見表6-17b.法(fa)蘭管(guan)(guan)(guan)長(chang)(chang)(chang)(chang)度(du)(du) 法(fa)蘭管(guan)(guan)(guan)長(chang)(chang)(chang)(chang)度(du)(du)見表6-18c.管(guan)(guan)(guan)件(jian)長(chang)(chang)(chang)(chang)度(du)(du) 管(guan)(guan)(guan)件(jian)長(chang)(chang)(chang)(chang)度(du)(du)共有兩個(ge)系(xi)列的尺寸，A系(xi)列及B系(xi)列。B系(xi)列適用(yong)于DN450及以下(xia)管(guan)(guan)(guan)件(jian)（具體的長(chang)(chang)(chang)(chang)度(du)(du)尺寸見管(guan)(guan)(guan)件(jian)的結構型(xing)式(shi)與尺寸部(bu)分）。2.壁厚(hou)...
球墨鑄(zhu)鐵(tie)管件(jian)接(jie)(jie)口(kou)配套件(jian)型(xing)(xing)(xing)式與尺(chi)(chi)寸(cun)主(zhu)要有以(yi)下幾種：一、接(jie)(jie)口(kou)型(xing)(xing)(xing)式與尺(chi)(chi)寸(cun) 1. DN40～DN1200T型(xing)(xing)(xing)接(jie)(jie)口(kou)球鐵(tie)管的型(xing)(xing)(xing)式見(jian)圖6-2，公稱尺(chi)(chi)寸(cun)見(jian)表6-2；DN1400T型(xing)(xing)(xing)接(jie)(jie)口(kou)球鐵(tie)管的型(xing)(xing)(xing)式見(jian)圖6-3，公稱尺(chi)(chi)寸(cun)見(jian)表6-2。 2. K型(xing)(xing)(xing)接(jie)(jie)口(kou)...
用于制造管子(zi)、管件(jian)和附件(jian)的(de)鑄鐵(tie)，其析出的(de)石墨(mo)經預處理后成明顯(xian)球狀的(de)稱為球墨(mo)鑄鐵(tie)。和灰鑄鐵(tie)相比(bi)，球墨(mo)鑄鐵(tie)除具(ju)有較高的(de)抗拉強度外，還具(ju)有灰鑄鐵(tie)材(cai)料所(suo)不(bu)具(ju)備的(de)塑性、韌性和低溫(wen)沖擊(ji)性。球墨(mo)鑄鐵(tie)管（以(yi)下簡稱球鐵(tie)管）、管件(jian)和附件(jian)用途很廣，主要有：輸送(song)水（包(bao)括飲用水、污水）管道(dao)；...
用于(yu)制造管(guan)(guan)(guan)子、管(guan)(guan)(guan)件和(he)附(fu)件的(de)鑄(zhu)(zhu)鐵(tie)(tie)，其析出(chu)的(de)石墨經預(yu)處理后成明顯球狀(zhuang)的(de)稱為球墨鑄(zhu)(zhu)鐵(tie)(tie)。和(he)灰鑄(zhu)(zhu)鐵(tie)(tie)相(xiang)比，球墨鑄(zhu)(zhu)鐵(tie)(tie)除具(ju)有較高的(de)抗(kang)拉強度外，還(huan)具(ju)有灰鑄(zhu)(zhu)鐵(tie)(tie)材(cai)料所不具(ju)備的(de)塑性、韌(ren)性和(he)低溫(wen)沖擊(ji)性。球墨鑄(zhu)(zhu)鐵(tie)(tie)管(guan)(guan)(guan)（以(yi)下簡(jian)稱球鐵(tie)(tie)管(guan)(guan)(guan)）、管(guan)(guan)(guan)件和(he)附(fu)件用途很(hen)廣，主要有：輸(shu)送水（包括飲(yin)用水、污水）管(guan)(guan)(guan)道(dao)；...
1.直管(guan)(guan)及(ji)(ji)管(guan)(guan)件材料化學成(cheng)分 直管(guan)(guan)及(ji)(ji)管(guan)(guan)件的磷(lin)含量應不大(da)于0.30％，硫含量應不大(da)于0.10％。2.力學性能(neng) 直管(guan)(guan)及(ji)(ji)管(guan)(guan)件的抗拉強度應不小于150MPa。3.工藝(yi)性能(neng) 直管(guan)(guan)應進行水(shui)壓(ya)試(shi)驗，其試(shi)驗壓(ya)力為0.2MPa。管(guan)(guan)件的水(shui)壓(ya)試(shi)驗由供需雙方協商...
