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文檔簡(jiǎn)介
4分管12.7mm1/2英寸
6分管19.05mm3/4英寸
1寸管25.4mm1英寸
備注參考:
工程管徑對(duì)照表(常用)
1英寸=25.4毫米=8英分
1/2是四分(4英分)DN15
3/4是六分(6英分)DN20
2分管DN8
4分管DN15
6分管DN20
1,DN25
12DN32
15DN40
2DN50
25DN65
3'DN80
4'DN100
5DN125
6'DN150
8'DN200
10'DN250
12'DN300
GB/T50106-2001
2.4管徑
2.4.1管徑應(yīng)以mm為單位。
2.4.2管徑的表達(dá)方式應(yīng)符合下列規(guī)定:
1水煤氣輸送鋼管(鍍鋅或非鍍鋅)、鑄鐵管等管材,管徑宜以公稱(chēng)直徑DN表示:
2無(wú)縫鋼管、焊接鋼管(直縫或螺旋縫)、銅管、不銹鋼管等管材,管徑直以外徑x壁厚表示;
3鋼筋混凝土(或混凝土)管、陶土管、耐酸陶瓷管、缸瓦管等管材,管徑直以?xún)?nèi)徑d表示;
4塑料管材,管徑宜按產(chǎn)品標(biāo)準(zhǔn)的方法表示;
5當(dāng)設(shè)計(jì)均用公稱(chēng)直徑DN表示管徑時(shí),應(yīng)有公稱(chēng)直徑DN與相應(yīng)產(chǎn)品規(guī)格對(duì)照表。
建筑排水用硬聚氯乙烯管材規(guī)格用de(公稱(chēng)外徑)xe(公稱(chēng)壁厚)表示(GB5836.1-92)
給水用聚丙烯(PP)管材規(guī)格用dexe表示(公稱(chēng)外徑x壁厚).
關(guān)于DN與De的區(qū)別:
1、DN是指管道的公稱(chēng)直徑,注意:這既不是外徑也不是內(nèi)徑;應(yīng)該與管道工程發(fā)展初期與英制單位有關(guān);通常用來(lái)描述鍍鋅鋼管,它與英制
單位的對(duì)應(yīng)關(guān)系如下:
4分管:4/8英寸:DN15;
6分管:6/8英寸:DN20;
1寸管:1英寸:DN25;
寸二管:1又1/4英寸:DN32;
寸半管:1又1/2英寸:DN40:
兩寸管:2英寸:DN50;
兩寸半管:21/2英寸:DN63
三寸管:3英寸:DN80(很多地方也標(biāo)為DN75);
四寸管:4英寸:DN100;
De主要是指管道外徑,一般采用De標(biāo)注的,均需要標(biāo)注成外徑X壁厚的形式;
主要用于描述:無(wú)縫鋼管、PVC等塑料管道、和其他需要明確壁厚的管材。
拿鍍鋅焊接鋼管為例,用DN、De兩種標(biāo)注方法如下:
DN20De25X2.5mm
DN25De32X3mm
DN32De40X4mm
DN40De50X4mm
等等。。。。。。我們習(xí)慣于使用DN來(lái)標(biāo)注焊接鋼管,在不涉及到壁厚的情況下很少使用De來(lái)標(biāo)注管道;
但是標(biāo)注塑料管就又是另外回事了;還是跟行業(yè)習(xí)慣有關(guān),實(shí)際施工過(guò)程中我們簡(jiǎn)略稱(chēng)呼的20、25、32等管道均是指De,而不是指DN,
這里相差一個(gè)規(guī)格呢。不搞清楚很容易在采購(gòu)、施工過(guò)程中造成損失。
兩種管道材料的連接方式不外乎:絲扣連接及法蘭連接。其他連接方式就用得很少了。
鍍鋅鋼管、PPR管均能采用以上兩種連接,只是小于50的管道用絲扣較方便,大于50的用法蘭比較可靠。
注意:如果是兩種不同材質(zhì)的金屬管道相連,要考慮是否會(huì)產(chǎn)生原電池反應(yīng),否則會(huì)加速活躍金屬材料管道的腐蝕速度,最好
要用法蘭連接,并用橡膠墊片類(lèi)的絕緣材質(zhì)將兩種金屬分隔開(kāi),包括螺栓都要用墊片分隔,避免接觸。
記住英制長(zhǎng)度單位的進(jìn)制:
1英寸=8英分
(所以3英分寫(xiě)成3/8英寸,不是0.3英寸)
1英尺=12英寸
1碼=3英尺
1英里=1760碼
4英分就是半英寸,12.7mm(這就是大口徑狙擊槍的子彈頭的直徑)
8英分就是一英寸,25.4mm
6英分是多少,自己可以算出來(lái)了。
DN——D表示“直徑”,N表示“內(nèi)徑”。管材:每米重量(公斤)=0.02466x壁厚x(外徑-壁厚)
?角鋼:每米重量(公斤)=0.00785x(邊寬+邊厚-邊厚)x邊厚
?圓鋼:每米重量(公斤)=0.00617x直徑x直徑(注:螺紋鋼和圓鋼相同)
?扁鋼:每米重量(公斤)=0.00785x厚度x邊寬
?板材:每米重量(公斤)=0.785x厚度
?有色金屬的板材的計(jì)算公式為:每平方米重量(公斤)=比重*厚度
?各種有色金屬的比重如下:紫銅板8.9黃銅板8.5鋅板7.2鉛板11.37鋁板2.8
?鋁花紋板:每平方米重量(公斤)=2.96*厚度
?紫銅管:每米重量(公斤)=0.02796*壁厚*(外徑-壁厚)
?黃銅管:每米重量(公斤)=0.02670*壁厚*(外徑-壁厚
九、無(wú)縫鋼管單位重量表
熱軋無(wú)縫鋼管每米重量表
壁厚(毫米)
外徑(毫米)2.533.544.555.566.577.5
理論重量(公斤/米)
321.822.152.462.763.053.333.593.854.094.324.53
382.192.592.983.353.724.074.414.745.055.355.64
422.442.893.353.754.164.564.955.335.696.046.38
452.623.113.584.044.494.935.365.776.176.566.94
502.933.484.014.545.055.556.046.516.977.427.86
54-3.774.364.935.496.046.587.107.618.118.60
57-4.004.625.235.836.416.997.558.108.639.16
60-4.224.885.526.166.787.397.998.589.159.71
63.5-4.485.185.876.557.217.878.519.149.7510.36
684.815.576.317.057.778.489.179.8610.5311.19
70-4.965.746.517.278.018.759.4710.1810.8811.56
73-5.186.006.817.608.389.169.9110.6611.3912.11
76-5.406.267.107.938.759.5610.3611.1411.9112.67
83--6.867.798.719.6210.5111.3912.2613.1213.96
89--7.388.389.3810.3611.3312.2813.2214.1615.07
95--7.908.9810.0411.1012.1413.1714.1915.1916.18
102--8.509.6710.8211.9613.0914.2115.3116.4017.48
108---10.2611.4912.7013.9015.0916.2717.4418.59
114-■-10.8512.1513.4414.7215.9817.2318.4719.70
壁厚(毫米)
外倒毫
2.533.544.555.566.577.5
米)
理論重量(公斤/米)
121---11.5412.9314.3015.6717.0218.3519.6820.99
127-■-12.1313.5915.0416.4817.9019.3220.7222.10
133-■-12.7314.2615.7817.2918.7920.2821.7523.21
140----15.0416.6518.2419.8321.4022.9624.51
146-■--15.7017.3919.0620.7222.3624.0025.62
152----16.3718.1319.8721.6023.3225.0326.73
159-■--17.1518.9920.8222.6424.4526.2428.02
168-----20.1022.0423.9725.8927.7929.69
180-----21.5923.7025.7527.7029.8731.91
194-----23.3125.6027.8230.0032.2834.50
203■------29.1431.5033.8336.16
219-------31.5234.0636.6039.12
245--------38.2341.0943.85
273--■-----42.6445.9249.10
299----------53.91
325-----■----58.74
351-----------
377----------■
402-----------
426-----------
459-----------
(465)-----------
480-----------
壁厚(毫米)
外徑(毫米)88.599.5101112131415
理論重量(公斤/米)
324.74---------
385.92-----■---
426.717.027.327.607.88-----
457.307.657.998.328.63-■---
508.298.709.109.499.86----■
549.089.549.9910.4310.8511.67----
579.6710.1710.6511.1311.5912.4813.3214.11-■
6010.2610.8011.3211.8312.3313.2914.2115.0715.88-
63.510.9511.5312.1012.6513.1914.2415.2416.1917.09-
6811.8412.4713.1013.7114.3015.4616.5717.6318.6419.61
7012.2312.8913.5414.1714.8016.0117.1718.2719.3320.35
7312.8213.5214.2114.8815.5416.8218.0519.2420.3721.46
7613.4214.1514.8715.5816.2817.6318.9420.2021.4122.57
8314.8015.6216.4217.2218.0019.5321.0222.4423.8225.15
8915.9816.8717.7618.6319.4821.1622.7924.3725.8927.37
9517.1618.1319.0920.0320.9622.7924.5626.2927.9729.59
壁厚(毫米)
外徑(毫米)88.599.5101112131415
理論重量(公斤/米)
10218.5519.6020.6421.6722.6924.6926.5328.6330.3832.18
10819.7320.8621.9723.0824.1726.3128.4130.4632.4534.40
11420.9122.1223.3124.4825.6527.9430.1932.3834.5336.62
12122.2923.5824.8626.1227.3729.8432.2634.6236.9439.21
12723.4824.8426.1927.5328.8531.4734.0336.5539.0141.43
13324.6626.1027.5228.9330.3333.1035.8138.4741.0943.65
14026.0427.5729.0830.5732.0634.9937.8840.7243.5046.24
14627.2328.8230.4131.9833.5436.6239.6642.6445.5748.46
15228.4130.0831.7433.3935.0238.2541.4344.5647.6550.68
15929.7931.5533.2935.0336.7540.1543.5046.8150.0653.27
16831.5733.4335.2937.1338.9742.5946.1749.6953.1756.60
18033.9335.9537.9539.9541.9245.8549.7253.5457.3161.04
19436.7038.8941.0643.2345.3849.6453.8658.0362.1566.22
20338.4740.7743.0545.3347.5952.0856.5260.9165.9469.54
21941.6344.1246.6149.0851.5456.4361.2666.0470.7875.46
24546.7649.5652.3855.1757.9563.4868.9574.3879.7683.08
27352.2855.4558.6061.7364.8671.0777.2483.3689.4295.44
壁厚(毫米)
外徑(毫米)88.599.5101112131415
理論重量(公斤/米)
29957.4160.8964.3767.8371.2778.1384.9391.6998.40105.06
32562.5466.3570.1473.9277.6885.1892.63100.03107.38114.68
35167.6771.8075.9180.0184.1092.23100.32108.36116.35124.29
377-■81.6886.1090.5199.29108.02117.00125.33133.91
402--87.2191.9596.67106.06115.41124.71133.94143.15
426--92.5597.57102.59112.58122.52132.41142.25152.04
450--97.87103.20108.50119.08130.61140.09150.52160.90
(465)--101.10116.48112.20123.15134.05144.90155.70166.46
480--104.52110.22115.90127.22139.49149.71160.88172.00
500--108.96114.91120.83132.65145.41156.12167.79179.40
530--115.62121.94128.83140.78154.29165.74178.14190.50
(550)--120.07126.62133.10146.21159.20172.15185.05197.90
560--122.28128.97135.63148.92163.16175.36188.50201.60
600--131.17138.34145.50159.78175.00188.18202.31216.39
630--137.81145.36152.89167.91183.88197.80212.67227.49
壁厚(毫米)
外徑(毫米)161718192022(24)25(26)28
理論重量(公斤/米)
32----------
38------■---
42----------
45------■---
50----------
54----------
57----------
60----------
63.5------?---
6820.52---------
7021.31■-------
7322.4923.4824.4125.30------
7623.6824.7425.7526.71------
8326.4427.6728.8529.99------
8928.8030.1931.5232.8034.0336.3538.47---
9531.1732.7034.1835.6136.9939.6142.02---
壁厚(毫米)
外徑(毫米)161718192022(24)25(26)28
理論重量(公斤/米)
10233.9335.6437.2938.8940.4443.4046.17---
10836.3038.1539.9541.7043.4046.6649.7251.1752.5855.24
11438.6740.6742.6244.5146.3649.9153.2754.8756.4359.38
12141.4343.6045.7247.7949.8253.7157.4159.1960.9164.22
12743.8046.1248.3950.6152.7856.9760.9662.8964.7668.36
13346.1748.6351.0553.4255.7360.2264.5166.5968.6172.50
14048.9351.5754.1656.7059.1964.0268.6670.9073.1077.34
14651.3054.0856.8259.5162.1567.2772.2174.6076.9481.48
15253.6656.6059.4862.3265.1170.5975.7678.3080.7985.62
15956.4359.5362.5965.6068.5674.3379.9082.6285.2890.46
16859.9863.3166.5969.8273.0079.2185.2388.1691.0596.67
18064.7168.3471.9175.4478.9285.7292.3395.5698.74104.96
19470.2474.2178.1382.0085.2893.32100.62104.19107.72114.63
20373.7877.9782.1286.2190.2698.20105.94109.74113.49120.83
21980.1084.6989.2393.7198.15106.88115.42119.61123.75131.89
24590.3695.59100.77105.90110.98120.99130.80135.64140.42149.84
273101.41107.33113.20119.02124.79136.18147.38152.90158.38169.18
壁厚(毫米)
夕卜徑(毫米)161718192022(24)25(26)28
理論重量(公斤/米)
299111.67118.23124.74131.20137.61150.29162.77168.93175.05187.13
325121.93129.12136.28143.38150.44164.39178.15184.96191.72205.09
351132.19140.03147.82155.56163.26178.50193.54200.99208.39223.04
377142.44150.93159.36167.75176.08192.61208.93217.02225.06240.99
402152.30161.40170.45179.45188.40206.16223.72232.42241.08258.24
426161.78171.47181.11190.71200.25219.19237.93247.23256.48274.83
450171.24181.52191.76201.94212.08232.20252.12262.01271.85291.38
(465)177.16187.81198.41208.97219.47240.34261.00271.26281.47301.74
480183.08194.10205.07216.00226.87248.47269.88280.51291.09312.10
500190.97202.48213.95225.37236.74259.32281.72292.84303.91325.91
530202.80215.06227.27239.42251.53275.60299.47317.50323.14346.62
(550)210.70223.44236.14248.80261.40286.45311.31323.66335.97360.43
560214.64227.64240.58253.48266.33291.88317.23---
600230.42244.40258.34272.22286.06313.58340.90---
630242.26256.98271.66286.28300.85329.85358.66---
壁厚(毫米)
外徑(毫米)3032(34)(35)36(38)40(42)(45)
理論重量(公斤/米)
12771.76--------
13376.2079.71------■
14081.3885.2388.8890.6392.33----
14685.8289.9793.9195.8197.66----
15290.2694.7098.94100.99102.99----
15995.44100.22104.81107.03109.20----
168102.10107.33112.36114.80117.19121.83126.27130.51136.50
180110.98116.80122.42125.16127.85133.07138.10142.94149.82
194121.33127.85134.16137.24140.27146.19151.91157.44165.36
203127.99134.94141.70145.00148.26154.62160.78166.75175.33
219139.83147.57155.12158.82162.47169.62176.58183.33193.10
245159.07168.09176.92181.26185.55193.99202.22210.26221.95
273179.78190.19200.40205.43210.41220.23229.85239.27253.03
壁厚(毫米)
外倒毫米)3032(34)(35)36(38)40(42)(45)
理論重量(公斤/米)
299199.02210.71222.20227.87233.50244.59255.49266.20281.88
325218.25231.23244.00250.31256.53268.94281.14293.13310.73
351237.49251.74265.80272.76279.66293.32306.76320.06339.59
377256.73272.26287.61295.20302.77317.69332.44346.99368.44
402275.21291.18308.55316.76324.92341.10357.08372.86396.16
426292.98310.93328.69337.49346.27363.61380.77397.74422.82
450310.72329.84348.79358.19367.53386.08404.42422.56449.43
(465)321.81341.69361.37371.13380.85400.13419.22438.11466.07
480332.91353.52373.94384.08394.17414.19436.01453.64482.72
500347.71369.30390.71401.34411.92432.93453.74474.35504.91
530369.9092.92415.87427.23438.55461.04483.34505.42538.20
(550)384.70406.76432.64444.30456.31479.79503.06526.15560.40
壁厚(毫米)
外徑(毫
(48)50566063(65)7075
米)
理論重量(公斤/米)
203183.47188.65-----
219202.41208.38------
245233.25240.44------
273266.40274.96------
299297.10307.02335.57353.62366.64375.08395.30414.29
325327.90339.10371.49392.09407.04416.75440.34462.28
351358.68371.16407.40430.59447.43458.43485.24510.46
377389.45403.22442.30469.06484.82500.14529.98558.55
402419.02434.01477.81506.02526.66540.17573.10604.79
426447.46463.64510.97541.57560.47578.68614.56649.21
450475.84493.20544.10577.04601.24617.12655.96693.56
(465)493.59511.70564.83599.24624.54641.16681.84721.31
480511.35530.19585.53621.43632.31665.20707.74749.05
500535.02554.85613.15651.02678.91697.26742.27786.04
530570.53591.84654.58695.41725.52745.35794.05841.52
(550)594.21616.50682.19725.00756.59777.41828.58878.51
注:1、括號(hào)內(nèi)的尺寸不推薦使用。2、鋼管長(zhǎng)度:3?12.5米。
冷拔(軋)無(wú)縫鋼管每米重量表(理論重量)
壁厚(毫米)
外徑(毫
0.250.300.400.500.600.801.01.21.4
米)
理論重量(公斤/米)
50.02920.03480.04540.0550.0650.0830.0990.1120.124
60.03540.04210.0550.0680.0800.1030.1230.1420.159
70.04160.04960.0650.0800.0950.1220.1480.1720.193
80.04770.0570.0750.0920.1100.1420.1730.2020.227
90.0540.0640.0850.1050.1250.1620.1970.2310.262
100.0600.0720.0950.1170.1390.1820.2220.2610.296
110.0660.0790.1050.1290.1540.2010.2470.2900.331
120.0720.0870.1150.1420.1690.2210.2710.3200.365
(13)0.0790.0940.1240.1540.1840.2410.2960.3490.400
140.0850.1010.1340.1660.1990.2600.3210.3790.434
(15)0.0910.1090.1440.1790.2140.2800.3450.4090.468
160.0970.1160.1540.1910.2280.3000.3700.4380.503
(17)0.1030.1240.1640.2030.2440.3200.3950.4680.537
180.1090.1310.1740.2160.2580.3400.4190.4970.572
(19)0.1150.1380.1830.2280.2740.3590.4440.5270.606
200.1220.1460.1930.2400.2880.3790.4690.5560.642
壁厚(毫米)
外徑(毫
0.250.300.400.500.600.801.01.21.4
米)
理論重量(公斤/米)
(21)--0.2030.2530.3030.3990.4930.5860.675
22--0.2120.2650.3180.4190.5180.6160.710
(23)--0.2220.2770.3330.4380.5430.6450.745
(24)--0.2360.2900.3470.4580.5670.6740.779
25--0.2420.3020.3630.4780.5920.7030.813
(27)--0.2620.3270.3920.5160.6410.7620.882
28--0.2720.3400.4060.5360.6660.7920.916
29--0.2820.3520.4180.5530.6910.8230.951
30--0.2920.3640.4360.5760.7150.8510.986
32--0.3110.3890.4660.6150.7650.9101.05
34--0.3310.4130.4960.6550.8140.9681.12
(35)--0.3410.4260.5100.6750.8380.9981.16
36--0.3500.4380.5250.6950.8631.03
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