| 一、概述 | 
              
                | 適用于以油、氣為介質(zhì)的管路系統(tǒng)用錐密封焊接式管接頭,工作溫度為-25~+80℃。錐密封焊接式直通管接頭、錐密封焊接式直通圓柱管螺紋管接頭、錐密封焊接式直通圓錐管螺紋管接頭、錐密封焊接式錐螺紋管接頭、錐密封焊接式90°彎管接頭、錐密封焊接式圓柱管螺紋90°彎管接頭、錐密封焊接式圓錐管紋90°彎管接頭、錐密封焊接式錐螺紋90°彎管接頭、錐密封兩端焊接式直通管接頭、錐密封焊接式直角管接頭、錐密封焊接式三通管接頭、錐密封焊接式隔壁直角管接頭、錐密封焊接式隔壁直通管接頭的形式和尺寸按圖1~圖13和表中的規(guī)定。
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                | 二、結(jié)構(gòu)形式 | 
              
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                | 三、外形尺寸 | 
              
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                        | Do | d | d1 | d2 | lo | l |  
                        | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅰ Ⅱ | Ⅲ | Ⅳ |  
                        | 8 | M12X1.5 |  | R1/8 | NPT1/8 | 4 | 18 |  | 4.0 | 4.102 | 12 | 14 | 9 |  
                        | 10 | M14X1.5 | G1/4A | R1/4 | NPT1/4 | 6 | 21 | 24 | 6.0 | 5.786 | 18 | 14 |  
                        | 12 | M16X1.5 | G3/8A | R3/8 | NPT3/8 | 7 | 24 | 27 | 6.4 | 6.09 | 22 |  
                        | 14 | M18X1.5 | G3/8A | 8 | 27 | 14 |  
                        | 16 | M22X1.5 | G1/2A | R1/2 | NPT1/2 | 10 | 30 | 34 | 8.2 | 8.12 | 25 | 19 |  
                        | 20 | M27X2 | G3/4A | R3/4 | NPT3/4 | 13 | 36 | 41 | 9.5 | 8.61 | 16 | 28 |  
                        | 25 | M33X2 | G1A | R1 | NPT1 | 17 | 41 | 46 | 10.4 | 10.16 | 18 | 32 | 24 |  
                        | 30 | M42X2 | G11/4A | R11/4 | NPT11/4 | 20 | 55 | 55 | 12.7 | 10.66 | 20 | 35 |  
                        | 38 | M48X2 | G11/2A | R11/2 | NPT11/2 | 26 | 60 | 60 | 22 | 38 | 36 |  | 
              
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                        | 管子外徑DO | l1 | L | L1 | L2 | L3 | L4 | L5 | L6 | L7 | L8 |  
                        | 直通接頭 | 90°彎接頭 |  
                        | Ⅰ Ⅱ | Ⅲ Ⅳ | Ⅰ Ⅱ | Ⅲ Ⅳ | Ⅰ Ⅱ | Ⅲ Ⅳ |  
                        | 8 | 12 | 48 | 47 | 68 | 67 | 28 | 27 | 27 | 47 | 34 | 54 | 70 | 17 | ≈20 |  
                        | 10 | 14 | 49 | 48 | 72 | 71 | 29 | 28 | 28 | 48 | 40 | 60 | 72 | 19 |  
                        | 12 | 51 | 50 | 81 | 80 | 30 | 29 | 29 | 50 | 41 | 62 | 75 | 19 |  
                        | 14 | 59 | 58 | 83 | 82 | 36 | 35 | 35 | 58 | 45 | 65 | 84 | 22 | ≈22 |  
                        | 16 | 19 | 62 | 60 | 90 | 89 | 39 | 37 | 37 | 60 | 47 | 70 | 85 | 23 |  
                        | 20 | 68 | 66 | 112 | 110 | 43 | 41 | 41 | 66 | 55 | 80 | 91 | 27 |  
                        | 25 | 24 | 78 | 76 | 118 | 116 | 48 | 46 | 46 | 76 | 62 | 92 | 100 | 31 |  
                        | 30 | 83 | 81 | 152 | 150 | 52 | 50 | 50 | 81 | 68 | 99 | 107 | 39 |  
                        | 38 | 26 | 92 | 90 | 182 | 180 | 56 | 54 | 54 | 90 | 74 | 110 | 116 | 43 |  |  | 
              
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                        | 管子外徑DO | L9 | L10 | S1 | S2 | S3 | S4 | S5 | S6 | H | R | D | 密封圈 |  
                        | 墊圈 | O型密封圈 |  
                        | 端面 | 錐面 |  
                        | 8 | 47 | 117 | 21 | 18 |  | 18 | 16 | 24 | 56 | 20 | 17 | 12 |  | 7.5X1.8 |  
                        | 10 | 48 | 120 | 24 | 21 | 24 | 21 | 16 | 27 | 56 | 20 | 19 | 14 | 16X2.65 | 9X1.8 |  
                        | 12 | 50 | 125 | 24 | 24 | 27 | 24 | 18 | 30 | 58 | 24 | 21 | 15 | 8X2.65 | 11.2X1.8 |  
                        | 14 | 58 | 142 | 27 | 27 | 24 | 21 | 30 | 58 | 28 | 23 | 118 | 11.8X2.65 |  
                        | 16 | 60 | 145 | 30 | 30 | 34 | 27 | 24 | 36 | 60 | 32 | 25 | 22 | 23.6X2.65 | 14X2.65 |  
                        | 20 | 66 | 157 | 36 | 36 | 41 | 34 | 27 | 41 | 70 | 45 | 31 | 27 | 30X2.65 | 18X2.65 |  
                        | 25 | 76 | 176 | 46 | 46 | 46 | 41 | 34 | 50 | 110 | 58 | 37 | 33 | 34.5X2.65 | 23.6X2.65 |  
                        | 30 | 81 | 188 | 50 | 55 | 55 | 46 | 36 | 55 | 130 | 72 | 43 | 42 | 43.7X2.65 | 28X2.65 |  
                        | 38 | 90 | 206 | 60 | 60 | 60 | 55 | 46 | 65 | 140 | 90 | 53 | 48 | 50X2.65 | 36.5X2.65 |  | 
              
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                        | 管子外徑DO | JB/T6381.1
 | JB/T6381.2
 | JB/T6381.3
 | JB/T6381.4
 | JB/T6382.1
 | JB/T6382.2
 | JB/T6382.3
 | JB/T6382.4
 | JB/T6383.1
 | JB/T6383.2
 | JB/T6383.3
 | JB/T6384.1
 | JB/T6384.2
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                        | 8 | 0.11 |  | 0.10 | 0.1 | 0.12 |  | 0.12 | 0.12 | 0.09 | 0.16 | 0.23 | 0.28 | 0.27 |  
                        | 10 | 0.13 | 0.13 | 0.11 | 0.11 | 0.13 | 0.13 | 0.13 | 0.13 | 0.11 | 0.19 | 0.29 | 0.32 | 0.31 |  
                        | 12 | 0.15 | 0.16 | 0.15 | 0.15 | 0.16 | 0.16 | 0.16 | 0.16 | 0.15 | 0.22 | 0.32 | 0.37 | 0.36 |  
                        | 14 | 0.18 | 0.18 | 0.18 | 0.18 | 0.20 | 0.20 | 0.19 | 0.19 | 0.18 | 0.24 | 0.36 | 0.54 | 0.44 |  
                        | 16 | 0.24 | 0.24 | 0.22 | 0.22 | 0.26 | 0.26 | 0.24 | 0.25 | 0.23 | 0.32 | 0.48 | 0.63 | 0.62 |  
                        | 20 | 0.47 | 0.47 | 0.45 | 0.45 | 0.6 | 0.6 | 0.58 | 0.58 | 0.42 | 0.59 | 0.82 | 0.9 | 0.85 |  
                        | 25 | 0.95 | 0.95 | 0.91 | 0.91 | 0.84 | 0.84 | 1.09 | 1.09 | 0.89 | 1.05 | 1.51 | 1.38 | 1.33 |  
                        | 30 | 1.18 | 1.18 | 1.15 | 1.15 | 1.32 | 1.31 | 1.32 | 1.32 | 1.09 | 1.3 | 1.82 | 1.86 | 1.75 |  
                        | 38 | 1.26 | 1.26 | 1.51 | 1.51 | 1.85 | 1.85 | 1.78 | 1.78 | 1.42 | 1.82 | 2.66 | 2.67 | 2.35 |  | 
              
                | 錐密封焊接式管接頭端接螺紋(公制細(xì)牙和圓柱管螺紋)連接尺寸錐密封焊接式管接頭端接螺紋的連接尺寸見圖A1、A2 及表A1。
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                        | 管子外徑DO | D | d2 | D1 | b |  
                        | 公制細(xì)牙螺紋 | 圓柱管螺紋 | 公制細(xì)牙螺紋 | 圓柱管螺紋 | 公制細(xì)牙螺紋 | 圓柱管螺紋 |  
                        | 8 | M12X1.5 |  | 18 |  | 19 |  | 1517
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                        | 10 | M14X1.5 | G1/4A | 21 | 24 | 22 | 25 |  
                        | 12 | M16X1.5 | G3/8A | 24 | 27 | 25 | 28 |  
                        | 14 | M18X1.5 | G3/8A | 27 | 29 |  
                        | 16 | M22X1.5 | G1/2A | 30 | 34 | 31 | 35 |  
                        | 20 | M27X2 | G3/4A | 36 | 41 | 37 | 42 | 19 |  
                        | 25 | M33X2 | G1A | 46 | 46 | 47 | 47 | 21 |  
                        | 30 | M42X2 | G11/4A | 55 | 55 | 56 | 56 | 23 |  
                        | 38 | M48X2 | G11/2A | 60 | 60 | 61 | 61 | 25 |  | 
              
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                | 三、標(biāo)記說明 | 
              
                | a、管子外徑D0為20mm的錐密封焊接式直通管接頭:管接頭20 JB/T6381.1-92
 b、管子外徑D0為20mm的錐密封焊接式直通圓柱管螺紋管接頭:
 管接頭20 JB/T6381.2-92
 c、管子外徑D0為20mm的錐密封焊接式直通圓錐管螺紋管接頭;
 管接頭20 JB/T6381.3-92
 d、管子外徑D0為20mm的錐密封焊接式直通錐螺紋管接頭:
 管接頭20 JB/T6381.4-92
 e、管子外徑D0為20mm的錐密封焊接式90°彎管接頭:
 管接頭20 JB/T6382.1-92
 f、管子外徑D0為20mm的錐密封焊接式圓柱管螺紋90°彎管接頭:
 管接頭20 JB/T6382.2-92
 g、管子外徑D0為20mm的錐密封焊接式圓錐管螺紋90°彎管接頭:
 管接頭20 JB/T6382.3-92
 h、管子外徑D0為20mm的錐密封焊接式錐螺紋90°彎管接頭:
 管接頭20 JB/T6382.4-92
 i、管子外徑D0為20mm的錐密封兩端焊接式直通管接頭:
 管接頭20 JB/T6383.1-92
 j、管子外徑D0為20mm的錐密封焊接式直角管接頭:
 管接頭20 JB/T6383.2-92
 k、管子外徑D0為20mm的錐密封焊接式三通管接頭:
 管接頭20 JB/T6383.3-92
 l、管子外徑D0為20mm的錐密封焊接式隔壁直角管接頭:
 管接頭20 JB/T6384.1-92
 m、管子外徑D0為20mm的錐密封焊接式隔壁直通管接頭:
 管接頭20 JB/T6384.2-92
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