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中国石油天然气总公司工程技术研究院承担的部级科研课题“小口径内涂层管道压接技术研究”于1995年11月15日通过中国石油天然气总公司科技局组织的鉴定。鉴定证书为中油科签字［1995］第054号。与会专家一致认为：该成果是一项新型实用的钢质管道连接技术，尤其适用于带内涂层
China National Petroleum Corporation Engineering Research Institute undertakes a ministerial-level research project “small-caliber inner coating pipe crimping technology” in November 15, 1995 through the China National Petroleum Corporation Science and Technology Organization identified. Accreditation certificate for the oil signed [1995] No. 054. Experts agreed that: This result is a new and practical steel pipe connection technology, especially for in-band coating