东汉末据北海淳于一带的海贼首领。建安十一年秋八月，为曹操部将乐进、李典所击破，逃往海岛。后曹操从何夔计，遣郡丞黄珍往，为陈成败，管承等于是请降。
论述了承插式铸铁管作井管的优点和设计原理，实践证明效果良好，值得推广。
The paper introduces design principle of pipe well using socket and spigot connected cast iron pipes as pipe material. The results are effective.
有必要采用底漆来渗透和软化管道和管件承插端口表面，使得液状粘固剂能够完全粘结。
Primer is necessary to penetrate and soften both pipe and fitting socket surfaces in order for the solvent cement to properly bond.
聚乙烯管件热熔承插和热熔对接接口抗拉强度及爆破强度均高于管材本体。
PE pipe hot melt socket and hot melt docking interface tensile strength and blasting strength are higher than the pipe ontology.
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