15crmoG alloy seamless steel pipe is a 15crmo, its performance is much higher than the average of seamless steel tubes, which contain Cr steel because it is more, its high temperature [1], corrosion resistance than other seamless steel pipe 15crmo not on the tube, so the alloy pipe in the petroleum, chemical, power, boilers and other industries for more extensive use of welded steel 15CrMo work characteristics, based on past experience, the reference provided by the welding process card abroad Jiangyin 15crmo, we choose Two schemes welding test. Program Ⅰ: welding preheat, using ER80S-B2L wire, TIG welding backing, E8018-B2 welding, SMAW cover up 15crmo alloy, local heat treatment after welding. Program Ⅱ: using ER80S-B2L wire, TIG welding backing, E309Mo-16 electrodes, welding arc is filled cover up, no heat treatment after welding. Jiangyin 15crmo_ Katherine source steel (certified) _ Huludao 15crmo provided by source Pipe Co., Ltd. Liaocheng trillion. Liaocheng Katherine source Pipe Co., Ltd. (www.lczygg.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Katherine source leader in steel with the staff warmly welcome all inquiries negotiations to create Katherine source steel a better future.