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鑽杆APISPEC5D、APISPEC7
尺寸公差外徑、壁厚、重量、許可偏差項目許可偏差管體外徑D≤101.6mm±0.79mmD≥114.3mm+0.1%-0.5%壁厚-12.5%重量單根+6.5%-3.5%車載量-1.75%螺紋參數許可偏差名稱錐度mm/m螺距每英寸mm緊密距mm鑽杆27/8"-5"公端+2.5-0±0.038+0.254mm-0.127mm母端+0-2.50±0.038+0-0.254化學成份鋼級化學成份P≤S≤E-750.0300.030X-950.0300.030G-1050.0300.030S-1350.0300.030工具接頭0.0300.030機械性能管體鋼級屈服強度抗拉強度延伸率(%)硬度夏氏衝擊力最低最高最低最高最低PsiMPaPsiMPaPsiMPaHBHRC均勻值單個值E-7575000517105000724100000689625000A0.2/U0.9--5447X-9595000655125000862105000724--5447G-105105000724135000931115000793--5447S-13513500093116500011381450001000--5447焊縫工具接頭120000827.4--140000965.3≥13%285-5447E-7578000517--100000689-372418X-9588000609