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1.[标准] 管法兰用垫片密封性能试验方法

百度什么是sp

发布单位：
中国-国家标准(CN-GB)

标准状态：
即将实施

标准号：
GB/T 12385-2025

发布时间：
2025-08-05

中标分类：
J15 管路附件

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件描述了测漏空腔增压法（方法A）、压降法（方法B）及氦质谱真空测漏法（方法C）三种测定管法兰用垫片密封性能的方法。本文件适用于非金属平垫片、缠绕式垫片、聚四氟乙烯包覆垫片、金属包覆垫片、柔性石墨复合增强垫片、金属齿形组合垫片、金属波齿复合垫片的密封性能测定。其他类型的垫片参考执行。

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2.[标准] 聚乙烯（PE）燃气管道定期检验规则

发布单位：
中国-湖南省地方标准(CN-DB43)

标准状态：
未生效

标准号：
DB43/T 2915-2024

发布时间：
2025-08-05

中标分类：
J74 机械 - 通用机械与设备 - 压力容器

国标分类：
23.040 流体系统和通用件 - 管道部件和管道

实施时间：
2025-08-05
3.[标准] 钢制异径短节

发布单位：
中国-国家标准(CN-GB)

标准状态：
现行

标准号：
GB/T 43913-2024

发布时间：
2025-08-05

中标分类：
J15 管路附件

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件规定了DN 6～DN 300（NPS 1/8～NPS 12）的钢制异径短节（以下简称“异径短节”）的品种与代号、接管尺寸、订货内容、形状、尺寸与公差、材料、设计与制造、热处理、检验与试验、标志、表面防护与包装以及产品质量合格证明书的要求。本文件适用于管道系统中的钢制异径短节。

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4.[标准] 铸铁管法兰　第1部分：PN 系列

发布单位：
中国-国家标准(CN-GB)

标准状态：
现行

标准号：
GB/T 17241.1-2024

发布时间：
2025-08-05

中标分类：
J15 管路附件

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件规定了PN系列铸铁管法兰和法兰盖的类型与参数、型式与尺寸、技术要求、压力试验、检验与验收、标志与标记、订货要求及包装。
本文件适用于材料为灰铸铁、球墨铸铁、可锻铸铁，公称压力PN 2.5～PN 63，公称尺寸DN 10～DN 4000的铸铁管法兰和法兰盖。

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5.[标准] 铸铁管法兰　第2部分：Class系列

发布单位：
中国-国家标准(CN-GB)

标准状态：
现行

标准号：
GB/T 17241.2-2024

发布时间：
2025-08-05

中标分类：
J15 管路附件

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件规定了Class系列铸铁管法兰和法兰盖的类型与参数、型式与尺寸、技术要求、压力试验、检验与验收、标志与标记、供货要求。
本文件适用于材料为灰铸铁和球墨铸铁、公称压力Class 25～Class 300、公称尺寸DN 25～DN 1200(NPS 1～NPS 48)的铸铁管法兰和法兰盖。

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6.[标准] 核级柔性石墨板材

发布单位：
中国-国家标准(CN-GB)

标准状态：
现行

标准号：
GB/T 43887-2024

发布时间：
2025-08-05

中标分类：
Q69 其他非金属矿制品

国标分类：
23.040.80 管和软管组件的密封

实施时间：
2025-08-05

摘要：本文件规定了核级柔性石墨板材的技术要求、试验方法、检验规则、标志、包装、运输和贮存。本文件适用于以可膨胀石墨为原料、未经改性和增强、用于核工业的核级柔性石墨板材，核工业用非核级柔性石墨板材参照使用。

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7.[标准] 压力管道规范　动力管道

发布单位：
中国-国家标准(CN-GB)

标准状态：
现行

标准号：
GB/T 32270-2024

发布时间：
2025-08-05

中标分类：
J74 压力容器

国标分类：
23.040 管道部件和管道

实施时间：
2025-08-05

摘要：本文件规定了火力发电厂界区内以蒸汽、水为介质的管道的材料、设计、制作、安装、检验、试验、安全防护、保温及防腐的基本要求。火力发电厂界区内其他压力管道按照GB/T 20801（所有部分）执行。本文件不适用于：a）〓锅炉本体管道；b）〓核电厂管道；c）〓采暖通风与空气调节的管道及非圆形截面的管道；d）〓各种塔、建筑构架、贮罐、机械设备和仪表用的管道;e）〓非金属管道。本文件规定的管道与锅炉本体范围内的管道分界见图1和图2。〓〓标引符号说明：--锅炉本体管道，按照TSG 11管理；--锅炉外部管道和接头（即第1章中规范的蒸汽、水管道和接头），符合TSG 11的锅炉范围内管道的设计及计算参照本文件的要求；--非锅炉外部管道和接头。

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8.[标准] 不锈钢卡压式管件组件　第1部分：卡压式管件

发布单位：
中国-国家标准(CN-GB)

标准状态：
即将实施

标准号：
GB/T 19228.1-2024

发布时间：
2025-08-05

中标分类：
J15 管路附件

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件规定了不锈钢卡压式管件(以下简称管件)的分类和标记、结构型式和尺寸、技术要求、试验、检验及包装、运输和贮存等。
本文件适用于公称尺寸不大于DN100、公称压力不大于PN25的生活饮用水、管道直饮水、排水、生活热水、冷水、海水、燃气、医用气体等不锈钢管路用卡压式管件的设计、制造和验收。

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9.[标准] 薄壁不锈钢管道技术规范

发布单位：
中国-国家标准(CN-GB)

标准状态：
即将实施

标准号：
GB/T 29038-2024

发布时间：
2025-08-05

中标分类：
J15 管路附件

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件规定了薄壁不锈钢管道的材料、设计、施工与验收等的技术规范。
本文件适用于工业与民用建筑中公称压力不大于PN 25、公称尺寸不大于DN 300、温度不大于80 ℃的给水（介质为管道直饮水、生活热水、冷水等）及开水供应薄壁不锈钢管道的设计、施工及验收。

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10.[标准] 可锻铸铁管路连接件

发布单位：
中国-国家标准(CN-GB)

标准状态：
即将实施

标准号：
GB/T 3287-2024

发布时间：
2025-08-05

中标分类：
Y71 建筑五金

国标分类：
23.040.60 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：本文件界定了可锻铸铁管路连接件（以下简称“管件”)的术语和定义，确立了管件的产品分类和标记，规定了管件的材料、设计、外观、性能等技术要求，描述了对应的试验方法、检验规则、标志、包装、运输及贮存等。
本文件适用于最大工作压力为2.5 MPa、公称尺寸(DN)6~(DN)150、使用温度为-20 ℃~300 ℃，工作介质为水、油、空气、燃气、蒸汽等一般管路连接用的管件的设计、制造、验收。

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11.[标准] 压力管道规范　长输管道

发布单位：
中国-国家标准(CN-GB)

标准状态：
现行

标准号：
GB/T 34275-2024

发布时间：
2025-08-05

中标分类：
J74 压力容器

国标分类：
23.040 管道部件和管道

实施时间：
2025-08-05

摘要： 1.1　本文件规定了陆上油气长输管道材料、设计和计算、施工和安装、检验和试验、安全防护、试运投产、使用和维护以及维抢修的基本要求。注：长输管道构成见附录A。 1.2　陆上油气长输管道的范围见图1，图中实线和实线框内的管道适用于本文件。注：长输管道延伸进入炼油厂、油库、城市燃气门站、储气库、LNG接收站、燃气电厂、油（气）处理厂等工厂界区范围的部分，由设计文件说明长输管道与其他类别管道的界面。

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12.[标准] 30MnSi预应力混凝土管桩用端板

发布单位：
中国-团体标准(CN-TUANTI)

标准状态：
现行

标准号：
T/SSEA 0349-2024

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.60 管道部件和管道 - 法兰、管接头和连接件

实施时间：
2025-08-05

摘要：主要技术内容:本文件规定了以30MnSi为原材料制造的预应力混凝土管桩用端板的订货内容、规格和标记、尺寸外形、技术要求、试验方法、检验规则、包装、运输和贮存。本文件适用于30MnSi预应力混凝土管桩用端板（以下简称端板）
13.[标准] Standard Practice for Inspection and Acceptance of Installed Reinforced Concrete Culvert, Storm Drain, and Storm Sewer Pipe

已安装的钢筋混凝土涵洞、雨水排水管和雨水管的检查和验收标准实施规程

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM C1840/C1840M-24

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.50 管道部件和管道 - 其他材料的管和配件

实施时间：

摘要： 1.1This practice covers the requirements for inspection and acceptance of installed reinforced concrete pipe by either person-entry, or remote inspection as shown inFigs. 1 and2, respectively.FIG. 1Person Entry InspectionFIG. 2Remote Inspection Camera1.2The scope of this specification is intended for installation related observations and assumes that pre-installation inspection has been completed.1.3The reinforced concrete culvert, storm drain and storm sewer pipe shall be manufactured in accordance with SpecificationC76,C506,C507,C655,C1417, orC1846/C1846Mand accepted in accordance with AASHTO R?73. This specification shall only be used for gravity, non-pressure storm drainage applications.1.4Person Entry shall be used unless extenuating circumstances preclude this type inspection. Remote inspection is acceptable for use for pipe diameters of 30 in. [750 mm] and smaller unless otherwise specified by owner or engineer.1.5Access of installed pipe for manual inspection shall follow OSHA 29 CFR PART 1926 SUBPART AA regulations for confined space entry.However, this standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6This practice does not cover deformation or deflection assessment. Concrete pipe is classified as a rigid structure because they do not bend or deflect appreciably under load before cracking. Due to these facts shape evaluation are of little or no value when evaluating concrete pipe.1.7The values stated in either Imperial/US or [SI units] are to be regarded separately as standard. The SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.1.8This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ======4.1The inspection of installed reinforced concrete pipe verifies proper installation of the product and establishes thresholds for comparison further evaluation.4.2This practice is useful as a reference by an owner in preparing project specifications and to identify, evaluate and interpret observations during post installation inspections of pipe.
14.[标准] Standard Specification for Precast Concrete Duct Bank

预制混凝土管道组的标准规范

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM C1903-24

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.50 管道部件和管道 - 其他材料的管和配件

93.030 土木工程 - 外部污水排放系统

实施时间：

摘要： 1.1This specification includes the manufacturing requirements and installation guidelines of a precast duct bank system including polyvinyl chloride (PVC) duct enclosed in a concrete envelope. This specification also includes information relating to trenching, backfilling, plugging, and other incidentals necessary for a complete installation.1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.3This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
15.[标准] Standard Specification for Crosslinked Polyethylene (PEX) Tubing

交联聚乙烯（PEX）管的标准规范

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM F876-24

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.20 管道部件和管道 - 塑料管

实施时间：

摘要： 1.1This specification covers crosslinked polyethylene (PEX) tubing that incorporates an optional polymeric inner, middle or outer layer and that is outside diameter controlled, made in nominal SDR9 tubing dimension ratios except where noted, and pressure rated for water at three temperatures (seeAppendix X1). Included are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature and pressure, environmental stress cracking, stabilizer functionality, bent-tube hydrostatic pressure, oxidative stability in potable chlorinated water, UV resistance, and degree of crosslinking. Requirements for tubing markings are also given. The components covered by this specification are intended for use in, but not limited to, residential and commercial, hot- and cold-potable water distribution systems, reclaimed water, fire protection, municipal water service lines, building supply lines, radiant heating and cooling systems, hydronic distribution systems, snow and ice melting systems, geothermal ground loops, district heating, turf conditioning, compressed air distribution and building services pipe, provided that the PEX tubing covered herein complies with applicable code requirements.1.2The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.1.3The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. The values given in parentheses are mathematical conversions that may not be exact equivalents to either SI units or inch-pound units and that are provided for information only.1.4The following safety hazards caveat pertains only to the test methods portion, Section7, of this specification:This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
16.[标准] Standard Specification for Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems

高温聚乙烯（PE-RT）塑料冷热水管和分配系统标准规范

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM F2769-24

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.01 管道部件和管道 - 管道部件和管道综合

91.140.60 建筑物中的设施 - 供水系统

实施时间：

摘要： 1.1This specification establishes requirements for polyethylene of raised temperature (PE-RT) plastic hot- and cold-water tubing and distribution systems components made in one standard dimension ratio and intended for 100 psig (6.9 bar) water service up to and including a maximum working temperature of 180?°F (82?°C). Components are comprised of tubing, fittings, valves and manifolds. Tubing may incorporate an optional polymeric inner, middle or outer layer. Testing of fittings and PE-RT tubing to the requirements of this standard indicate that these fittings are appropriate for use with PE-RT piping systems. Requirements and test methods are included for materials, workmanship, dimensions and tolerances, burst pressure, sustained pressure, oxidative resistance, temperature cycling tests, bend strength and environmental stress cracking. Also included are tests related to system malfunctions. The components covered by this specification are intended for use in residential and commercial, hot and cold, potable water distribution systems, and building supply lines.1.2The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.Note 1:Suggested hydrostatic design stresses and hydrostatic pressure ratings for tubing and fittings are listed inAppendix X1. UV labeling guidelines are provided inAppendix X2. Design, assembly, and installation considerations are provided inAppendix X3. An optional performance qualification and an in-plant quality control program are recommended inAppendix X4.1.3Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4The following safety hazards caveat pertains only to the test methods portion, Section7, of this specification.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
17.[标准] Standard Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic Distribution Systems

热水和冷水循环分配系统用带氧气屏障的交联聚乙烯（PEX）管的标准规范

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM F3253-24

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.20 管道部件和管道 - 塑料管

实施时间：

摘要： 1.1This specification covers requirements, test methods, and marking requirements for crosslinked polyethylene (PEX) tubing with a polymeric oxygen barrier layer, made in one standard dimension ratio (SDR 9), and distribution system components intended for hydronic heating and cooling applications up to and including a maximum working temperature of 200?°F (93?°C).1.1.1Components are comprised of tubing, fittings, valves, and manifolds. Tubing made to this specification incorporates a single outer or middle wall oxygen barrier layer intended for inhibiting the transmission or permeation of oxygen through the tubing wall. Requirements and test methods are included for materials, workmanship, tubing dimensions and tolerances, burst pressure, sustained pressure, excessive temperature and pressure, thermo-cycling, bent tube, oxidative resistance, layer adhesion, UV resistance, oxygen permeation, and fitting pull-out strength tests. The components covered by this specification are intended for use in residential and commercial hydronic heating and cooling systems. Requirements for potable water applications are outside the scope of this specification.1.2The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.1.3The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
18.[标准] Standard Specification for Folded/Formed Poly-(Vinyl Chloride) Pipe Type A for Existing Sewer and Conduit Rehabilitation

现有下水道和管道修复用A型折叠/成型聚氯乙烯管的标准规范

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM F1871-24

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.20 管道部件和管道 - 塑料管

83.080.20 塑料 - 热塑性塑料

实施时间：

摘要： 1.1This specification covers requirements and test methods for materials, dimensions, workmanship, flattening resistance, impact resistance, pipe stiffness, extrusion quality, and a form of marking for folded/formed poly-(vinyl chloride) (PVC) pipe for existing sewer and conduit rehabilitation.1.2Folded pipe produced to this specification is for use in non-pressure sewer and conduit rehabilitation where the folded PVC pipe is installed into and then expanded to provide a close fit to the wall of the original conduit, forming a new structural pipe-within-a-pipe.Note 1:For installation procedures and design calculations refer to PracticeF1867.1.3This specification includes pipe made only from materials specified in Section6. This specification does not include folded pipe manufactured from reprocessed, recycled, or reclaimed PVC.1.4The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.5There is no similar or equivalent ISO Standard.1.6The following precautionary statement pertains only to the test method portion, Section11, of this specification.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
19.[标准] Standard Test Method for Charpy Impact Test on Thin Specimens of Polyethylene Used in Pressurized Pipes

压力管道用聚乙烯薄试样的夏比冲击试验的标准试验方法

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM F2231-02(2024)

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.20 管道部件和管道 - 塑料管

实施时间：

摘要： 1.1This test method describes the specimen preparation and the method of measuring the impact energy of polyethylene used in pressurized pipes.1.2The test specimens are taken from compression molded plaques of the resin from pellets or pipe.1.3Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ======5.1Brown and Lu4,5show the Charpy impact energy is related to the ultimate critical temperature of the rapid crack propagation [RCP] behavior as measured by the ISO 13477, S-4 test.65.2The test method may be used to determine the impact energy of polyethylene used in the manufacture of pipe. This test method involves the preparation of a small compression molded specimen of PE resin that is then notched in a specified manner. The specimen is then broken in a pendulum impact machine. The impact energy is recorded in joules. The value obtained is referred to as the Charpy impact energy.
20.[标准] Standard Specification for Chlorinated Poly(Vinyl Chloride)/Aluminum/Chlorinated Poly(Vinyl Chloride) (CPVC-AL-CPVC) Composite Pressure Tubing

氯化聚氯乙烯/铝/氯化聚氯乙烯（CPVC-AL-CPVC）复合压力管的标准规范

发布单位：
美国-美国材料与试验协会(US-ASTM)

标准状态：
现行

标准号：
ASTM F2855-19(2024)

发布时间：
2025-08-05

中标分类：
-

国标分类：
23.040.20 管道部件和管道 - 塑料管

实施时间：

摘要： 1.1This specification covers a Chlorinated Poly(Vinyl Chloride)/Aluminum/Chlorinated Poly(Vinyl Chloride), (CPVC-AL-CPVC), composite pressure tubing with a welded aluminum tube reinforcement between the inner and outer layers. The inner and outer CPVC layers are bonded to the aluminum tube by a melt adhesive. Included is a system of nomenclature for the composite tubing, the requirements and test methods for materials, the dimensions of the component layers and finished tubing, adhesion tests, hydrostatic burst and sustained pressure and thermocycling performance. Also given are the requirements and methods of marking. The components covered by this specification are intended for use in residential and commercial, hot and cold, potable water distribution systems.Note 1:The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.1.2This specification covers only composite tubing incorporating a continuously welded aluminum tube. Tubing consisting of metallic layers not continuously welded together are outside the scope of this specification.1.3Specifications for internal bushings for use with composite tubing meeting the requirements of this specification are given inAnnex A1.1.4Tubing meeting the requirements of this standard are designed to be used with fittings and solvent cements meeting the requirements of SpecificationD2846/D2846Mwhen assembled in accordance withAnnex A2.Warning—Pressurized (compressed) air or other compressed gases contain large amounts of stored energy which present serious safety hazards should a system fail for any reason.1.5The products covered by this specification are intended for use with the distribution of pressurized liquids only, which are chemically compatible with the tubing materials. Due to inherent hazards associated with testing components and systems with compressed air or other compressed gases, some manufacturers do not allow pneumatic testing of their products. Consult with specific product manufacturers for their specific testing procedures prior to pneumatic testing.1.6The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.Note 2:Suggested hydrostatic design pressures and pressure ratings for tubing are listed inAppendix X1.1.7The following safety hazards caveat pertains only to the test method portion, Section9.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.8This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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