鍛造接頭  接頭材料經(jīng)過鍛造, 提高材料密實(shí)度, 改變材料纖維組織, 從而提高其綜合機(jī)械性能；桿體調(diào)質(zhì) 鉆桿體經(jīng)調(diào)質(zhì)處理, 達(dá)到導(dǎo)向鉆進(jìn)對鉆桿高彈性、高強(qiáng)度、高韌性的要求；優(yōu)化設(shè)計(jì) 鉆桿經(jīng)過等強(qiáng)度和應(yīng)力分散等優(yōu)化設(shè)計(jì)，能充分發(fā)揮鉆桿材料的潛能；雙結(jié)構(gòu) 公母接頭擰緊時(shí)內(nèi)外臺(tái)肩同時(shí)緊，使鉆桿能承載大的扭矩和彎力；氮化處理 接頭絲扣部位經(jīng)氮化處理，提高其表面搞磨性，且防止粘扣；鐓粗加厚 管體端部經(jīng)鐓粗加厚，確保了摩擦焊縫處不會(huì)斷裂。 規(guī) 格外徑(mm)桿體壁厚(mm)額定扭矩(Nm)額定拉力(kN)允許zui小曲率半徑(m)允許彎曲角度(/m)φ42×54252200110331.74°φ50×6.5506.54000180401.43°φ60×76077000250501.15°φ73×873811000350650.88°φ89×1089920000500800.72°φ114×10114104000010001000.57°φ127×10127107000015001200.48°φ140×111401112000030001400.41°