我厂6×600吨铰链式人造金刚石液压机上的1500公斤/厘米~2超高压油管和管接头的焊接有200余处,全部采用手弧焊。焊后经超高压试车检验及两年多的运行证明,所有焊接接头无漏油、渗油及断裂现象。超高压油管材质为45号无缝钢管,规格为外径18毫米、内径6毫米、壁厚6毫米。油管 I plant 6 × 600 tons hinge-type artificial diamond hydraulic machine 1500 kg / cm ~ 2 ultra-high pressure tubing and pipe joints welding more than 200, all by hand arc welding. Ultra high voltage test after welding test and more than two years of operation proved that all welded joints without oil leakage, oil leakage and fracture phenomena. Ultra-high-pressure tubing is 45 seamless steel pipe specifications for the outer diameter of 18 mm, an inner diameter of 6 mm, wall thickness of 6 mm. Tubing