COE中直徑直縫雙面埋弧焊管的研制與生產(chǎn)

R & D and Production of Medium-sized COE Double SAWL Pipe

摘要: 介紹了COE中直徑直縫雙面埋弧焊管的研制要求，生產(chǎn)線的工藝設(shè)計、裝備配置、成型原理和內(nèi)外埋弧焊的焊接方法，以及該產(chǎn)品在國內(nèi)管線工程中的應(yīng)用。理化試驗(yàn)和實(shí)際應(yīng)用表明：COE中直徑直縫雙面埋弧焊管管體成型好、焊縫質(zhì)量佳、產(chǎn)品質(zhì)量穩(wěn)定，可替代Φ508 mm以下HFW焊管，也可替代部分無縫鋼管和螺旋縫埋弧焊管，用途廣泛，具有較好的發(fā)展前景。

Abstract: Described in the article are all about the R & D and application of the medium-sized COE double SAWL pipe, involving such aspects as technological design and equipment configuration of the operation line, formation theory and the inner/outer submerged arc welding process, and how pipes of this type are being used in domestic pipeline projects.Relevant physicochemical tests and actual application practices demonstrate that the medium-sized COE double SAWL pipes are in possession of good profile, excellent weld seam quality and consistent general product quality, being capable of replacing HFW pipes with sizes under Φ508 mm as well as part of the seamless steel pipes and SAWH pipes, and suiting for a wide range of uses, and having an encouraging development potential.