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- drill pipe heat treatment 钻杆热处理
- An automatic control system of tempering heat treatment for welded drill pipe is presented in the paper . 介绍了一套对焊钻杆回火热处理自动控制系统。
- Research and Application on the Heat Treatment Supervising Control System of Petrolic Drill Pipe 石油钻杆热处理监控系统的研究与应用
- Research on Friction Welding and Post-Welding Heat Treatment of Drill Pipes 石油钻杆的摩擦焊接和焊缝热处理工艺研究
- The technique analysis of drilling pipe frictional welding and heat treatment 钻杆摩擦焊接及热处理工艺分析
- The drill pipe that was broken has been found. 断了的钻杆被找到了。
- Drill pipe threads are not cleaned in that way. 钻杆丝扣不是那样清洗的。
- The right thing to do now is to bent a drill pipe. 现在要做的事是拉弯一根钻杆。
- Make up 15 joints of 5" HW Drill pipe. 接上15根5"加重钻杆。
- The heat treatment improves the tensile strength. 热处理能提高抗拉强度。
- XI'AN DANFENG HEAT TREATMENT MATERIAL CO., LTD. 西安市丹凤热处理材料有限公司。
- Drill pipe corrosion results from oxygen acting on metals. 钻杆的腐蚀来自氧对金属的作用。
- Yancheng FENGDONG Heat Treatment Co., Ltd. 盐城丰东热处理有限公司。
- Petroleum and natural gas industries - Aluminium alloy drill pipe. 石油天然气工业-铝合金钻杆。
- Shanghai Huayi Heat Treatment System Co., Ltd. 上海华一热处理系统有限公司。
- The stand pipe pressure (drill pipe pressure) is 10kg/cm2. 立管压力（钻杆压力）10公斤/厘米2。
- Shangqiu Dayi Changsheng Heat Treatment Co., Ltd. 商丘市大一昌盛热处理有限公司。
- Heat treatment is usually indicated by the mark HT. 热处理通常用“HT”表示。
- Must these drill pipes be measured again? 这些钻杆必须再量一次吗?
- Main production fastener, heat treatment. 主要生产锯片，紧固件，热处理。
