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              | 卡套式對(duì)接直通管接頭(25MPa、40MPa) |  
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                  | 本標(biāo)準(zhǔn)規(guī)定了卡套式對(duì)接直通管接頭,適用于油、氣及一般腐蝕性介質(zhì)的管路系統(tǒng)。 |  
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                  | 標(biāo)記示例: 公稱壓力J級(jí),管子外徑D0為14mm的卡套對(duì)接直通管接頭:
 管接頭J14  GB/T3756.1-1983
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                      | 管子外徑D0 | 公稱通徑DN | d5 | l1≈ | L≈ | 扳手尺寸 | e | e1 | 重  量(kg/100件) |  
                      | S | S1 |  
                      | G(25) | 4 | 3 | 25 | 56 | 13 | 15 | 15 | 17.3 | 4.22 |  
                      | 5 | 3.5 | 4.22 |  
                      | 6 | 4 | 30.4 | 65 | 16 | 18.5 | 6.63 |  
                      | 8 | 6 | 36 | 72 | 15 | 18 | 17.3 | 20.8 | 9.52 |  
                      | 10 | 8 | 38 | 78 | 18 | 21 | 20.8 | 24.2 | 12.2 |  
                      | 12 | 10 | 39 | 79 | 21 | 24 | 24.2 | 27.7 | 16 |  
                      | 14 | 12 | 18.5 |  
                      | 16 | 14 | 40 | 82 | 24 | 27 | 27.7 | 31.2 | 23.5 |  
                      | 18 | 15 | 41 | 83 | 27 | 30 | 31.2 | 34.6 | 39.9 |  
                      | 20 | 17 | 44 | 91 | 30 | 34 | 34.6 | 39.3 | 37.7 |  
                      | 22 | 19 | 53 | 99 | 34 | 36 | 39.3 | 41.6 | 49.4 |  
                      | 25 | 22 | 103 | 36 | 41 | 41.6 | 47.3 | 65.9 |  
                      | 28 | 24 | 55 | 107 | 41 | 47.3 | 67.9 |  
                      | 32 | 27 | 57 | 111 | 46 | 50 | 53.1 | 57.7 | 99.3 |  
                      | 34 | 30 | 113 | 71.3 |  
                      | 40 | 34 | 58 | 114 | 50 | 55 | 57.7 | 63.5 | 112. |  
                      | 42 | 36 | 55 | 60 | 63.5 | 69.3 | 139 |  
                      | J(40) | 6 | 3 | 38 | 74 | 16 | 18 | 18.5 | 20.8 | 11.0 |  
                      | 8 | 5 | 76 | 18 | 21 | 20.8 | 24.2 | 13.4 |  
                      | 10 | 7 | 41 | 83 | 21 | 24 | 24.2 | 27.7 | 18.2 |  
                      | 12 | 8 | 27.7 | 21.7 |  
                      | 14 | 10 | 42 | 86 | 24 | 27 | 31.2 | 31.2 | 28 |  
                      | 16 | 12 | 27 | 30 | 34.6 | 34.4 |  
                      | 18 | 14 | 45 | 91 | 30 | 34 | 34.6 | 39.3 | 40.4 |  
                      | 20 | 16 | 55 | 109 | 34 | 36 | 39.3 | 41.6 | 56.2 |  
                      | 22 | 18 | 57 | 114 | 36 | 41 | 41.6 | 47.3 | 74.7 |  
                      | 25 | 20 | 61 | 119 | 41 | 47.3 | 79.4 |  
                      | 28 | 22 | 63 | 122 | 46 | 53.1 | 99.3 |  |  
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