異徑管又叫巨細頭，分為一心巨細頭和偏疼巨細頭
一、異徑管的機能
1、默示方式是大頭直徑乘以小頭直徑，例如"8×6"默示大頭直徑是8英寸，小頭直徑是6英寸的巨細頭。
2、壓力壁厚為Sch5s、Sch10s、Sch10、Sch20、Sch30、Sch40s、STD、Sch40、Sch60、Sch80s、XS;Sch80、Sch100、Sch120、Sch140、Sch160、XXS
3、材質(zhì)分為碳鋼 ，合金鋼 ，不銹鋼
a、碳鋼:10#、20#、A3、Q235A、20G、16Mn、ASTM A234、ASTM A105等
b、不銹鋼：ASTM A403、1Cr18Ni9Ti、0Cr18Ni9、00Cr19Ni10、、00Cr17Ni14Mo2、304、304L、316、316L等
c、合金鋼:16MnR、Cr5Mo、12Cr1MoV、10CrMo910、15CrMo、12Cr2Mo1、A335P22、St45.8/Ⅲ、A10bB
4、執(zhí)行尺度： 國標、美標(ANIS)、日標(JIS)、英標(BS)、德標(DIN)、意標(UNI)等
5、產(chǎn)物用途： 石油氣管道工程，自然氣管道工程，化工場，電廠，造船塢，制藥，乳品，啤酒，飲料，水利等
二、異徑管出產(chǎn)工藝流程
原材料復檢 --- 切割下料 --- 壓制成型 --- 整形 --- 熱處理 --- 加工坡口 --制品檢討 --- 輪廓處理 --- 標識 --- 資料確認 --- 包裝 --- 儲運
三、異徑管幾何尺寸
公稱英寸 Sch.120Sch.140Sch.160XXS
t1t2kgt1t2kgt1t2kgt1t2kg
11/2×11/2 7.147.141.7910.1510.152.54
2×3/4 8.745.563.1811.077.824
×1 6.353.18 9.094
×11/4 6.353.18 9.74
×11/2 7.143.18 10.154
×2 8.743.18 11.074
21/2×1 9.536.353.5814.029.094
×11/4 6.353.58 9.74.15
×11/2 7.143.58 10.154.2
×2 8.743.58 11.074.2
×21/2 9.533.58 14.024.5
3×11/4 11.136.355.6515.249.76.25
×11/2 7.145.75 10.156.3
×2 8.745.85 11.076.35
×21/2 9.536.15 14.026.6
×3 11.136.58 15.247.1
4×11/2 13.497.1410.817.1210.1514.5
×2 8.7410.8 11.0714.5
×21/2 9.5310.8 14.0214.5
×3 11.1311.1 15.2414.5
×411.1311.139 13.4911.8 17.1215
5×2 15.888.742319.0511.0727.2
×21/2 9.5323 14.0227.2
×3 11.1323 15.2427.2
×412.711.1317.5 13.4923 17.1228.8
×5 12.717.5 15.8823 19.0529.9
6×21/2 18.269.5330.921.9514.0234.8
×3 11.1330.9 15.2434.8
×414.2711.1324 13.4932.7 17.1234.8
×5 12.724 15.8832.7 19.0535.6
×6 14.2724 18.2639.5 21.9535.6
8×418.2611.1343.2 23.0113.495122.2317.1250.4
×5 12.743.2 15.8855.6 19.0550.4
×6 14.2749.5 18.2655.6 21.9551.3
×8 18.2649.520.6220.6254 23.0158 22.2355.5
10×421.4411.1371.3 28.5813.498525.417.1279.3
×5 12.771.3 15.8891.3 19.0579.3
×6 14.2781 18.26102.2 21.9590.9
×8 18.2688.5025.4020.6295.00 23.01113.00 22.2390.9
×10 21.4493 25.498.5 28.58129.3 25.498.5
12×525.412.7102.6 33.3215.88140.325.419.05119.5
×6 14.27102.6 18.26140.3 21.95119.5
×8 18.26131.2028.5820.62140.00 23.01152.30 22.23129.1
×10 21.44140.90 25.40158.00 28.58163.5 25.4150
×12 25.40150.00 28.58176.50 33.32183.80 25.40150
14×627.7914.27205.00 35.7118.26250.00
×8 18.26220.0031.7520.62230.00 23.01250.00
×10 21.44220.00 25.40245.00 28.58265.00
×12 25.40235.00 28.58255.00 33.32270.00
×14 27.79235.00 31.75255.00 35.71270.00
16×630.9614.27265.40 40.4918.26320.80
×8 18.26265.4036.5320.62295.00 23.01322.00
×10 21.44280.00 25.40300.00 28.58330.50
×12 25.40280.00 28.58310.00 33.32340.00
×14 27.79295.00 31.75340.00 35.71360.00
×16 30.96295.00 36.53360.00 40.49389.00
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