CN2320866Y - 埋地供热管用外套钢管 - Google Patents

埋地供热管用外套钢管 Download PDF

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Publication number
CN2320866Y
CN2320866Y CN 98223408 CN98223408U CN2320866Y CN 2320866 Y CN2320866 Y CN 2320866Y CN 98223408 CN98223408 CN 98223408 CN 98223408 U CN98223408 U CN 98223408U CN 2320866 Y CN2320866 Y CN 2320866Y
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China
Prior art keywords
steel pipe
overcoating
outer steel
pipe
buried heating
Prior art date
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Expired - Fee Related
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CN 98223408
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English (en)
Inventor
王敏华
汪伊萍
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Shanghai Jinshan Petrochemical Design Institute North Branch
Shanghai jinshan petrochemical design institute
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Shanghai Jinshan Petrochemical Design Institute North Branch
Shanghai jinshan petrochemical design institute
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Priority to CN 98223408 priority Critical patent/CN2320866Y/zh
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Publication of CN2320866Y publication Critical patent/CN2320866Y/zh
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Expired - Fee Related legal-status Critical Current

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Abstract

本实用新型公开了一种埋地供热管用外套钢管。其特点在于,外套钢管一端的端口内设有一背环,背环和外套钢管采用同类钢材,背环焊固于外套钢管一端的端口内。本实用新型不仅解决了埋地供热管外套钢管对口焊接质量的难题,而且操作相当简便,效率大为提高。

Description

埋地供热管用外套钢管
本实用新型属于钢管焊接技术领域,特别是涉及一种可提高焊接质量的外套钢管。
目前,埋地供热管有的采用外套钢管的形式。该形式主要由三部分组成:中心是供热管,然后是保温层,外面是外套钢管,由于埋地管道泄漏不易发现和不易检修的特点,因此在施工时要求对供热管的焊口进行百分之百的X光拍片检验。而对于外套钢管,由于内有供热管,不能进行拍片检验,因此外套钢管焊口的质量无法进行检验,其质量也难以保证,成为埋地供热管技术存在的问题之一。
本实用新型的目的在于,提供一种能有效克服上述缺陷,可保证焊接质量的埋地供热管用外套钢管。
本实用新型的技术方案为,一种埋地供热管用外套钢管,其特点在于,其一端的端口内设有一背环。
由于采用上述方案,不难得出如下结论,本实用新型不仅解决了埋地供热管外套钢管对口焊接质量的难题,而且操作相当简便,效率大为提高。
下面结合附图和实施例对本实用新型作进一步详细描述。
图1为本实用新型的结构示意图;
图2为本实用新型使用状态的结构示意图。
图中,本实用新型由外套钢管1和背环2组成,背环2焊固于外套钢管1一端的端口内。使用时,另一段外套钢管3也套在背环2上,符合焊接尺寸后,再与外套钢管1进行对焊。因外套钢管1、3和背环2采用同类钢材,固焊接时可加大电流,使二段外套钢管1、3焊透,从而保证了焊接质量。

Claims (2)

1.一种埋地供热管用外套钢管,其特征在于:其一端的端口内设有一背环。
2.按权利要求1所述的一种埋地供热管用外套钢管,其特征在于:背环和外套钢管采用同类钢材,背环焊固于外套钢管一端的端口内。
CN 98223408 1998-03-09 1998-03-09 埋地供热管用外套钢管 Expired - Fee Related CN2320866Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 98223408 CN2320866Y (zh) 1998-03-09 1998-03-09 埋地供热管用外套钢管

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 98223408 CN2320866Y (zh) 1998-03-09 1998-03-09 埋地供热管用外套钢管

Publications (1)

Publication Number Publication Date
CN2320866Y true CN2320866Y (zh) 1999-05-26

Family

ID=33974520

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 98223408 Expired - Fee Related CN2320866Y (zh) 1998-03-09 1998-03-09 埋地供热管用外套钢管

Country Status (1)

Country Link
CN (1) CN2320866Y (zh)

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