GB/T 6191-1986 内六角花形圆柱头螺钉 8.8级
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来源:标准资料网
基本信息
| 标准名称： | 内六角花形圆柱头螺钉 8.8级 |
| 英文名称： | Hexagon lobular socket head cap screws--Property class 8.8 |
| 中标分类： |
机械 >>
通用零部件 >>
紧固件 |
| ICS分类： |
机械系统和通用件 >>
紧固件 >>
螺栓、螺钉、螺柱
|
| 替代情况： | GB 2671-1981;被GB/T 2671.2-2004代替 |
| 发布日期： | 1986-01-17 |
| 实施日期： | 1986-10-01 |
| 首发日期： | 1986-01-17 |
| 作废日期： | 2004-08-01 |
| 起草单位： | 机械委标准所 |
| 出版日期： | 1900-01-01 |
| 页数： | 0 |
适用范围
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前言
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目录
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引用标准
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所属分类： 机械 通用零部件 紧固件 机械系统和通用件 紧固件 螺栓 螺钉 螺柱
Product Code:SAE AMS2481
Title:Phosphate Treatment, Antichafing
Issuing Committee:Ams B Finishes Processes And Fluids Committee
Scope:This specification covers the requirements for a manganese phosphate coating on ferrous alloys.【英文标准名称】:StandardPracticeforSamplingofGeosyntheticsforTesting
【原文标准名称】:试验用土工合成纤维织物的抽样的标准实施规程
【标准号】:ASTMD4354-1999(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D35.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:geosynthetic;qualityassurance;qualitycontrol;sampling;specificationconformance;testing;Geosynthetics--sampling
【摘要】:Thispracticeprovidesameansbywhichsamplesofgeosyntheticsmaybeselectedtoprovideastatisticallyvalidsamplefortheselectionoftestspecimenswithoutpreviousknowledgeofthevariabilitythatmayexistbetweenproductionunits.TheprinciplesstatedinPracticeD4271,andtheillustrativetextinthatpracticecanbeusedbytestmethodauthorsinpreparingsamplingstatements.Thispracticegivesthreeproceduresforsampling:oneformanufacturer''squalitycontrol(MQC),oneformanufacturer''squalityassurance(MQA)testing,andathirdforpurchaser''sspecificationconformancetesting.Forthisreason,testmethodscontainingasectiononsamplingthatrequirestheuseofthispracticeshouldcontainastatementinthesectiononreportingsimilartothefollowing:x201C;ReportwhichprocedurefromPracticeD4354wasusedforsampling:ProcedureAforManufacturer''sQualityControl(MQC),ProcedureBforManufacturer''sQualityAssurance(MQA)Testing,orProcedureCforPurchaser''sSpecificationConformanceTesting.Manufacturer''sQualityAssuranceisdoneinternallytoensurethemanufactureroftheMQCprogram.Whenitisrequiredtoprovidecertificationtoapurchaserastoqualityassurance,theMQAtestingistobedonebyanexternalMQAtestingfacility.1.1Thispracticecoversthreeproceduresforthesamplingofgeosyntheticsfortesting.Thispracticerequiresthatinstructionsontakinglaboratorysamplesandtestspecimensbepartofeverytestmethodforgeosynthetics.1.1.1Thefirstproceduredescribesthesamplingofproductionunitsforthepurposeofmanufacturer''squalitycontrol(MQC)(Table1).1.1.2Thesecondproceduredescribesthesamplingofproductionunitsforthepurposeofmanufacturer''squalityassurance(MQA)testingduringthemanufacturingprocess.Thisrequiresthatbackupstatisticalprocesscontrolrecordsbemaintainedduringthemanufacturingprocess(Table2).1.1.3Thethirdproceduredescribesthedivisionofshipmentsofgeosyntheticsintolotsandthedeterminationoflotsamplesizeforpurchaser''sspecificationconformancetesting(Table3).1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.TABLE1NumberofUnitstobeSelectedasLotSamplex2014;Purchaser''sSpecificationConformanceNumberofUnitsinLotNumberofUnitsSelected1to2
1
3to8
2
9to27
3
28to64
4
65to125
5
126to216
6
217to343
7
344to512
8
513to729
9
730to1000
