GB~石油用螺纹GB国标系统GB9253.1～9253.7-88石油用螺纹THREADS FOR PETROLEUM INSUSTRY技术科TECHNICAL DEPARTMENT重庆新泰机械有限责任公司CHONGQING XINTAI MECHINERY LTD.图1：三角形螺纹尺寸注：1、机紧时，接箍或内螺纹的端面可紧至消逝点平面；2、关于井下工具的螺纹螺尾角度可按实际需要确定。图2：偏梯形形螺纹尺寸表1 套管圆螺纹尺寸(CSG)螺纹代号大端大径D4基准距离L1有效螺纹长度L2管端至消逝点平面螺纹全长L4基面中径E1机紧后管端至接箍中心平面距离J接箍端面至基面的距离M接箍端孔直径Q接箍端孔深度q完整螺纹最小长度Lc手紧紧密距压数A适用的套管重量kg/m4-1/2-Ⅰ114.323.3943.5650.80111.84628.617.88116.712.722.22314.104-1/2-Ⅱ114.339.2759.4466.68111.84612.717.88116.712.738.10315.60～22.55-Ⅰ127.036.0956.2663.50124.54619.017.88129.412.741.27317.105-Ⅱ127.042.4462.6169.85124.54612.717.88129.412.741.27319.30～35.905-1/2139.745.6265.7973.02137.24612.717.88142.112.744.44320.80～34.206-5/8168.351.9772.1479.38165.82112.717.88170.712.750.80329.80～47.607-Ⅰ177.832.3953.0960.32175.34631.817.88180.212.731.74325.307-Ⅱ177.851.9772.1479.38175.34612.717.88180.212.750.80329.80～56.607-5/8193.753.4475.3182.55191.11412.718.01196.112.753.973-1/235.70～70.108-5/8-Ⅰ219.147.0968.9676.20216.51422.218.01221.512.747.623-1/235.708-5/8-Ⅱ219.156.6278.4985.72216.51412.718.01221.512.757.143-1/241.70～72.909-5/8-Ⅰ244.556.6278.4985.72241.91412.718.01246.912.757.143-1/248.10～79.60 ①9-5/8-Ⅱ244.554.9178.4985.72241.80812.718.11246.912.757.14464.70～79.60 ②10-3/4-Ⅰ273.040.7462.6169.85270.48931.818.01275.412.741.273-1/248.70 ①10-3/4-Ⅱ273.059.7981.6688.90270.48912.718.01275.412.760.323-1/260.30～82.60 ①10-3/4-Ⅲ273.058.0981.6688.90270.38312.718.11275.412.757.14475.90～97.80 ②11-3/4-Ⅰ298.459.7981.6688.90295.88912.718.01300.812.760.323-1/262.50～89.30 ①11-3/4-Ⅱ298.458.0981.6688.90295.78312.718.11300.812.757.14489.30 ②13-3/8-Ⅰ339.759.7981.6688.90337.16412.718.01342.112.760.323-1/271.40～107.02 ①13-3/8-Ⅱ339.758.0981.6688.90337.05812.718.11342.112.757.144101.20～107.20 ②16406.472.4994.36101.60403.839...
