UL60950-22 sbn0-7629-1239-1 Information Technology Equipment-Safety - Part22 Equipment to be Installed Outdoors BY L INC FOR N . USTE IN CANADA was CLASSIFIED 203988/6200730 AUTHORIZED FOR FURTHER REPRODUCTION OR BYSTRIBUTION WITHOUT PERMISSION FROM UL BY UNDERWRITERS LABURATORIES ING . E PUBUKATINN FOR USE IN INTERNATIONAL APPLKATIONS Useirrenaush was n 203988620038016M 1039 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This PDF Standard downloaded from . . APRIL 23,2007-ul60950-22 Underwriters Laboratories Inc .( ) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety of Information Technology Equipment - Safety- Part22 :Equipment to be Installed Outdoors ,UL 60950-22 First Edition ,Dated April 23 ,2007 Summary of Topics This Standard is the first edition UL 60950-22 .This binational Standard is based on IEC 60950-22 ,first edition . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML -an international standard ( ISO8879-1986 )--is descriptive markup language that describes a document's structure and purpose ,r...

UL60950-21 sbn0-7629-0902-1 Information Technology Equipment-Safety-Part 21 Remote Power Feeding FOR N THEU .. BY IN n o CLASSIFIED was 08802003805A 2。 BY COPYRIGHTED MATERIA ING ORIZED FOR FURTHER REPRODUCTION OR BUTION WITHOUT PERMISSION FROM UL FOR USE IN INTERNATIONAL was owmloaded () 203988/62003805M 1039 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This PDF Standard downloaded from . . APRIL 23,2007-ul60950-21 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Information Technology Equipment-Safety-Part 21 :Remote Power Feeding L60950-21 First Edition .Dated November 10 .2003 Revisions :This Standard contains revisions through and including April 23 ,2007 . Summary of Topics These revisions are being issued to revise sub-clause 6.2.1 and add Table 1 clarify the maximum power limitation for RFT-V circuits and to clarify the references to the Part 1 Standard ( UL60950-1 )in this Part 2 Standard ( UL60950-21 )to be consistent with text included in the first editions of UL 60950-22 and UL 60950-23 . UL Standards for Safety are...

UL60950-1 s0-7629-1238-3 Information Technology Equipment -Safety Part 1 General Requirements L . LSTED CLASSIFIED ING MARCH 27,2007-u60950-1 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Information Technology Equipment -Safety -Part 1 :General Requirements , UL60950-1 Second Edition ,Dated March 27 .2007 Summary of Topics This is the second edition of the bi-national Standard and is based on 60950-1 .second edition . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML - an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich requirements have been changed )may be included in revision pages due to relocation of existing text and reformatting of the Standard The new and /orrevised requirements are substantially in accordance with UL's Proposal (s)on this subject dated October 27 ,2006 and Fe...

UL UL60745-2-2 ⑧ Underwriters Laboratories Inc . Standard for Safety Hand-Held Motor-Operated Electric Tools Safety - Part 2-2 :Particular Requirements for Screwdrivers and Impact Wrenches UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This PDF Standard downloaded from . . JANUARY 23,2009-ul60745-2-2 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Hand-Held Motor-Operated Electric Tools Safety-Part 2-2 :Particular Requirements for Screwdrivers and Impact Wrenches ,UL 60745-2-2 Second Edition .Dated March 26 .2004 Revisions :This Standard contains revisions through and including January 23 ,2009 Summary of Topics The revisions dated January 23 ,2009 were issued to incorporate the following revised requirements and to to reflect the January 23 ,2009 ANSI recognition of the standard . 1 .Revisions to align with IEC Amendment No .1 for IEC 60745-2-2 ,second edition 2 .Revisions to add superseded requirement pages that incorporate requirements to be applied to screwdrivers and impact wrenches investigated to the requirements of the Third...

UL60745-2-14 Hand-Held Motor-Operated Electric Tools - SafetyPart 2-14 :Particular Requirements for Planers Was By Ric .V 203988220010824pm 03 020 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Was ? PM 203988220010824PM 8 JL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This PDF Standard downloaded from . . unE29,2007-UL60745-2-14 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Hand-Held Motor-Operated Electric Tools - Safety- Part2-14 :Particular Requirements for Planers ,UL 60745-2-14 Second Edition .Dated March 26 .2004 Revisions :This Standard contains revisions through and including June 29 ,2007 . Summary of Topics Revisions to align with IEC Amendment No .1 for 60745-2-14 dated April ,2006 . Clause 19 .Mechanical Hazards ,of the text has been modified to add mechanical hazard requirements specific to planers . UL Standards for Safety are developed and maintained the Standard Generalized Markup Language ( SGML).SGML - an international standard ( 8879-1986 )--is a descr...

UL60065 Audio .Video and Similar Electronic Apparatus -Safety Requirements This PDF Standard downloaded from . . DECEMBER 11 ,2007 -UL 60065 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Audio ,Video and Similar Electronic Apparatus - SafetyRequirements ,UL 60065 Seventh Edition .Dated June 30 .2003 Revisions :This Standard contains revisions through and including December 11 ,2007 . Summary of Topics This revision of UL 60065 is being issued to reinstate the option in 5.1 )of IEC 60065 for rated current and power consumption markings to be provided in the instruction manual .References to obsolete Standards have also been updated . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML - -aninternational standard ( 8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may include...

UL60065 isbn0-7629-0849-1 Audio .Video and Similar Electronic Apparatus -Safety Requirements This PDF Standard downloaded from . . APRIL 16,2004-ul60065 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Audio ,Video and Similar Electronic Apparatus-Safety Requirements ,UL 60065 Seventh Edition .Dated June 30 .2003 Revisions :This Standard contains revisions through and including April 16 ,2004 . Summary of Topics The revisions dated April 16 ,2004 are being issued to correct coding in the document in preparation for issuing UL Standards in HTML format .No requirements have been changed . UL Standards for Safety are developed and maintained the Standard Generalized Markup Language ( SGML).SGML an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be included in revision pages due to relocation of existing ...

UL 6 isbn0-7629-0976-5 Electrical Rigid Metal Conduit Steel No reproduction or networking permitted from IHS from . . jun30,2004-UL6 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Electrical Rigid Metal Conduit-Steel ,UL 6 Thirteenth Edition ,Dated June 30 ,2004 Summary of Topics This is the Thirteenth Edition of UL 6 ,the mon CSA and UL ( binational)standard for Electrical Rigid Metal Conduit-Steel Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be included in revision pages due to relocation of existing text and reformatting of the Standard The following table lists the future effective dates with the corresponding item Future Effective Date References June30,2006 Entire Standard The n...

UL 5C isbn0-7629-0994-3 Surface Raceways and Fittings for Use with Data ,Signal and Control Circuits This PDF Standard downloaded from . . may17,2007-ul5c Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,60062-2096 UL Standard for Safety for Surface Raceways and Fittings for Use with Data ,Signal ,and Control Circuits UL 5C Second Edition ,Dated August 10 ,2004 Revisions :This Standard contains revisions through and including May 17 ,2007 . Summary of Topics revision to the Conduit ldentification Marking in paragraph 17.4 is being issued . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML- -an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich no requirements have been changed )may be included in revision pages due relocation of existing text and reformatting of the Standard The revised requirements are substantially in a...

UL UL 5B ⑧ Underwriters Laboratories Inc . Standard for Safety Strut-Type Channel Raceways and Fittings This PDF Standard downloaded from . . uLY29,2009 UL 5B UL Standard for Safety for Strut-Type Channel Raceways and Fittings ,UL 5B Second Edition ,Dated April 14 ,2004 Summary of Topics The following revision being issued for UL 5B : Correction to Table 14.1 ,Maximum resistance of individual sections and fittings Text that has been changed in any manner or impacted by UL's electronic publishing system is marked with a vertical line in the margin .Changes in requirements are marked with a vertical line in the margin and are followed an effective date note indicating the date of publication or the date on which the changed requirement bees effective The revised requirements are substantially accordance with Proposal (s)onthis subject dated May 22 2009. All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission of UL . UL provides this Standard " asis "without warranty of any kind ,either e...

UL UL 5A ⑧ Underwriters Laboratories Inc . Standard for Safety Nonmetallic Surface Raceways and Fittings This PDF Standard downloaded from . . AUGUST 21 ,2008 - UL5A Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Nonmetallic Surface Raceways and Fittings ,UL 5A Third Edition ,Dated July 18 ,2003 Revisions :This Standard contains revisions through and including August 21 ,2008 . Summary of Topics Revisions to UL are being issued : 1 .To add new requirements ( UnitedStates only )for flush duplex receptacle securement (4.7.3) 2 .For the conduit identification marking in 7.4 The following table lists the future effective dates with the corresponding item Future Effective Date References July12010 Clause 4.7.3 A UL effective date is one established by Underwriters Laboratories Inc .and is not part of the ANSI approved standard . Text that has been changed in any manner is marked with a vertical line in the margin The revised requirements are substantially in accordance with UL's Proposal ()onthis subject dated April 4,2008. The revisions dated August 21 ,2008 include reprinted title page ( page1...

UL 58 STANDARD FOR SAFETY Steel Underground Tanks for Flammable and Combustible Liquids UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31 ,2018-UL 58 UL Standard for Safety for Steel Underground Tanks for Flammable and Combustible Liquids ,UL 58 Tenth Edition ,Dated January 31 ,2018 Summary of Topics This New Edition of UL 58 is being issued to address the editorial maintenance of UL Standards for Safety All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission UL . UL provides this Standard " as"without warranty of any kind ,either expressed or implied ,including but not limited to ,the implied warranties of merchantability or fitness for any purpose In no event will UL be liable for any special ,incidental ,consequential ,indirect or similar damages including loss of profits ,lost savings ,loss of data ,or any other damages...

UL555 isbn0-7629-1165-4 Fire Dampers COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL reproduction networking permitted from IHS UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL reproduction or networking permitted from IHS july12,2006-u555 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook ,IL 60062-2096 UL Standard for Safety for Fire Dampers ,UL 555 Seventh Edition ,Dated July 12 ,2006 Summary of Topics The Seventh Edition of the Standard for Fire Dampers ,UL 555 has been issued to reflect the latest ANSI approval date and to incorporate the proposals dated February 17 ,2006 and June 2 , 2006 .These proposals included the following : The revision of allowable clearance between parts during and after a fire test . The revision to delete the " Ambient'rating from 14.1.3. The deletion of paragraph 1 .13 which addresses issues specific to the certification of a product . Revisions to update references throughout the standard . Editorial revisions throughout standard . The revised requirements are substantially in accordance with UL's Propo...

目录 介绍 1范围 2概述 2.1零组件 2.2测量单位 2.3未注明日期之参考文献6 3专用词汇. 产品结构 4概述...7 5温感器控制 6套筒，8 7耐腐蚀性12 8执行器.13 产品性能 9概述..13 10耐火性和消防射流试验15 10.1验收条件15 10.2测试组件16 10.3消防试验的控制和实施.17 11循环实验.20 12盐雾曝露试验.20 13弹簧闭合力试验.21 14动态闭合试验。

.21 14.1概述....21 14.2试验方法..22 15管道冲击试验。

24 16气动执行器的流体静力强度试验.26 产品标示 17概述.27 安装操作说明 18概述.28 附录A 部件标准。

.A1 附录B
控制火灾试验的标准时间-温度曲线....- . . .B1 介绍
1范围 1.1本标准适应于预计安装在这些地方的防火阀，如穿墙或理入墙体、隔板开口处的管道、隔墙的空气输 送开口处以及美国国家防火协会（NFPA）在《空调和通风系统安装标准90A》中提到的延伸穿过地板的管 道。

防火阀必须按照规范安装，如官方建筑师与规范管理人员协会（BuildingOfficials andCode Administrators BOCA）国家机械器具条款、南方建筑物规范国际协商会（Southern Building Code Conference International SBCCI）标准机械条款、商业机会互通理事会（Interracial Council for BusinessOpportunities ICBO）统一机械 条款以及国际机械器具条款等装设标准来使用。

1.2防火阀还可以用于以下情况： a）静态系统的防火阀一一用于在发生火灾或墙壁、隔墙中的空气转换开口时自动关闭的暖通空调系 统，（Heating,Ventilating and AirConditioning采暖通风与空调） b）动态系统的防火阀一一用于在火灾中运行时的暖通空调系统或者 c）排烟防火阀一一用于暖通空调系统中需要防火阀和排烟阀在同一位置共同起作用的地方。

1.3为满足上述要求，防火阀需要经受标准的火场曝露测试，受控以在规定的时间段内达到指 定的温度，然后接受标准的消防射流测试，这种火场噪露本身并不代表的火灾条件：条件随火灾负荷的数 量、性质和分布、通风设备、舱室尺寸和结构，隔室散热器性质的变化而变化。

这些要求提供了在这些特定的 火灾暴露条件下防火阀组件的防火性能的相对测量。

与施工、测试方面如安装方法和材料的任何变化都有可能 极大地改变防火阀组件的性能特性。

1.4用于静态系统的防火阀（没有气流通过阀体）在温感器检测热时自动关闭。

1.5在这些需求下，用于动态系统下的排烟防火阀和防火阀暴露于标准的热和气流条件下，并在这些条件 下动态关闭。

1.6排烟防火阀也应符合UL555S排烟阀标准的使用要求。

1.7用于动态系统的防火阀旨在用于在火灾时保证气流流通，例如在火灾时烟气控制系统或其他系统中风 机系统正常运行。

1.8当防火阀用于穿越防火屏障的管道中或烟雾控制系统部分管道中时，系统设计者应确定哪种类型的防 火阀适合于此类应用中。

用于动态系统的防火阀仅在热气流条件下动态关闭。

具有高温额定值的排烟防火 阀在热气流下动态关闭并能在热空气中正常运行。

1.9根据这些要求进行的试验旨在证明防火阀在火场曝露试验期间的性能，而不打算确定防火阀在火灾后 的可使用性。

1.10根据本文描述的测试方法进行的测试开发数据的目的就是使监管部门能够确定防火阀组件是否适用 于在规定持续时间内防火的场所。

1.11防火阀的作用是当检测到热量时通过使用熔断器或其它温感器自动关闭。

1.12这些要求不包括在内： a)安装在墙壁、隔板或者不是由试验材料制成地板上的防火阀组件的性能。

b)用试验方法以外的安装方法安装的防火阀的性能。

c）通过安装的防火阀热传递的测量。

d）防火阀控制或限制烟气或燃烧产物通过程度的测量。

2概述 2.1零组件 2.11除以下2.1.2所注明之事项，本标准所包含之产品零组件必须符合零组件需求标准，请参阅附录A中所示 列出标准中涵盖的产品所使用的组件的标准清单。

2.12以下情形中零组件不必符合特定之标准： a）牵涉到产品使用时，出现标准内未规范之特性， b）或出现本标准之更新条款时。

2.13零组件务必依据本身用途及条件所订立的温度定额来使用。

2.14某些特定零组件被认定为产品结构特质不完整，或有其功能上之限制。

这类产品零组件仅适用于限定之环 境内，诸如温度定额不能超出特定限度，且仅能在受认可之使用环境内操作。

2.2测量单位 2.2.1在一数值之后的括号内，有其它单位计量值时，前者为标准内所用之数值。

2.3未注明日期之参考文献 2.3.1针对本标准需求内规范及条款的任何参考文献，必须是针对最新之条款或标准作解说。

3名词解释 3.1本标准可利用下列词汇定义： 3.2动力封闭-在热气流环境下，温感器启动而使防火挡板封闭。

3.3温感器-一种响应温度变化的安全装置，以激活防火阀的关闭机构。

3.4热风运行-阀体受气流及热的影响时，经由执行器操作排烟阀之操作方式。

3.5初级温感器-配备两个温感器的防火阀中较低温度额定值的温感器。

3.6防火阀的重新打开-配备初级和次级温感器的防火阀。

防火阀在初级温感器启动后可操作，而在次级设备激 活之后不能进行操作。

3.7次级温感器-配备两个温感器的防火阀中较高温度额定值的温感器。

3.8体积防火阀-使用位置装置的防火阀，使防火阀保持在完全打开或完全关闭的位置。

产品构成 4概述 4.1防火阀应安装成在关闭位置时限制火焰的通过。

动态系统的排烟防火阀和防火阀用应安装 成在额定气流和热条件下关闭。

排烟防火阀的温感器的额定温度应小于等于排烟阀。

4.2通过防火阀操作间隙的开口，在垂直平面（如防火阀叶片和框架的每一侧之间）的任何位置不超过3/8英寸 （9.5毫米），在水平平面任何位置不超过1/32英寸（0.8毫米）（如在联锁帘中叶片到叶片较接处）。

4.3任何通过防火阀和其管道之间的开口都不足以使在开口的整个深度上通过1/8英寸（3.5毫米）直径的杆。

任何 通过在多个防火阀总成上的开口，在两个框架的角相接的地方都不够大，从而使直径为1/4英寸（6.4毫米）直径的
杆穿过开口的整个深度。

4.4为了满足4.2和4.3的要求，当在垂直于安装平面的平面上观看时，通过防火阀上的开口是一个可见的开口。

4.5非金属或有机部件，如垫圈、密封剂、限位开关或叶片指示位置器用于建造防火阀和暴露于空气流的指标 应符合耐火性和消防射流试验的要求，第10条。

4.6由于采用了二级温感器可以在最初的关闭之后重新打开的排烟防火阀不被这些要求所禁止，次级温感器响 应导致阀体关闭后不会重新打开。

5温感器 5.1用于动态系统和静态系统的防火阀都应配备一个温感器。

排烟防火阀应配备一个温感器或者一套二级 温感器。

5.2用于静态系统的防火阀的温感器的温度额定值最小为160°F（71°C），且不超过212°F（100°C）。

5.2.1用于动态系统的防火阀的温感器的温度额定值最小为160°F（71°C），且不超过350°F（177C）。

5.2.2不能重新打开的排烟防火阀的温感器的温度额定值最小为160”F（71°C），其小于或等于由UL555S排 烟阀标准确定的阀体的温度额定值，且不超过350”F。

5.2.3对于可重新打开的排烟防火阀，初级温感器的温度额定值最小为160°F（71°C），且不超过212°F（100° C）。

次级温感器的温度额定值应大于初级温感器的温度等级，不低于由排烟阀UL55S标准确定的阀体的温度 额定值，且不应超过350°F（177C）。

5.3防火阀温感器的负载应在设备的设计负载极限内。

6套筒 6.1对于利用周边安装角安装的防火阀，应提供一个套筒，除非防火阀有足够大的框架，以提供对周边安装角 的直接连接。

防火阀的厚度，当不提供套筒时，应符合套筒的要求。

详情请参阅6.5。

6.2与防火阀一起使用的套简应在安装和操作说明中规定在现场供应时使用。

参见第18节。

6.3套筒或框架与管道连接应根据金属板材和空调承包商国家协会（SMACNA）管道施工标准。

暖通空调管道建 设标准；或纤维玻璃管施工标准。

6.4在套筒或框架和管道之间的刚性和断裂连接处的套筒或框架延伸到墙外或地板开口的长度不应超过： a）每边6英寸（152毫米），用于无执行机构或工厂安装检修门的防火阀。

b）一侧6英寸（152毫米），另一侧16英寸（406毫米），用于执行机构和/或工厂安装检修门在较长一 侧的防火阀。

c）每边16英寸（406毫米），用于执行器在一侧、工厂安装检修门在另一侧的防火阀。

6.5用于套管与导管之间的刚性连接 a）套筒的最大厚度应为无涂层钢板：0.135（3.43mm）和涂层钢板：0.138（3.51mm），除非测 试较大的套筒厚度。

b）套管厚度应至少为无涂层钢板0.053英寸（1.35毫米）、涂层钢板0.056英寸（1.42毫米）的防火阀钢板 的尺寸高度不超过24(610毫米）或宽度不超过36英寸（914毫米)，且无涂层钢板厚度最小0.067英 寸（1.70毫米）和涂层钢板厚度最小0.070英寸（1.78毫米），涂层钢板用于大尺寸防火阀。

例外：使用的套管厚度不得小于NFPA90A《空调和通风系统安装标准90A》标准所要求的厚度。

下列情况下较
小厚度的套管是不被禁止使用的： a）图6.1一6.3所示类型的一个或多个分离接头用作套管和管道之间的连接，或 b）分离接头符合管道冲击试验，第15节。

图6.1 管道套筒连接
PLAIN“S” SLIP HEMMED“S”SLIP
(ALTERNATE BAR)(ANGLEREINFORCED)(BAR REINFORCED)
INSIDE SLIP JOINT DOUBLE “S” SLIP
SM230A
M2.5...

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