ISO/IEC 25000标准包含以下几个部分：ISO/IEC 2500x-1：质量特性和子特性的定义ISO/IEC 2501x-2：质量测量的内在资源和外在因素ISO/IEC 2502x-3：质量测量的指南ISO/IEC 2503x-4：质量测量的参考模型 这些标准提供了评估软件产品质量的框架和方法，包括定义质量特性、测量质量、提供指导和参考模型等。在标准化过...
ISO 4422-2-1996 下载积分: 2500 内容提示: INTERNATIONAL STANDARD IS0 4422-2 First edition 1996-l 2-l 5 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water SUPPlY - Specifications - Part 2: Pipes (with or without integral sockets) Tubes et raccords en polyl...
ISO/IEC 2500n – Quality Management Division The standards that form this division define all common models, terms and definitions referred further by all other standards from SQuaRE series. Currently, this division consists of the following standards: ...
125级、150级、250级、300级、600级、900级、1500级、2500级。 控制阀 改变过程控制系统中流体流速的电动装置,包括连接至致动器的阀门,该致动器能够改变阀门中关闭构件的位置对来自控制系统的信号的响应 无组织排放 任何物理形式的化学物质或化学混合物,代表意外或虚假的工业现场设备泄漏 泄漏量 在规定试验条件下,...
下载积分: 2500 内容提示: ISO 15663-3:2001(E)© ISO 2001 – All rights reserved13— maintained by the contractor during detailed design with input from vendors,— used as the baseline to assess proposed changes during the operating and support phases.Information content will evolve with the ...
EN ISO 9444-2:2010 发布 2010年总页数 16页发布单位 欧洲标准化委员会当前最新EN ISO 9444-2:2010 适用范围 ISO 9444的本部分规定了实际宽度为600毫米至2500毫米的连续热轧不锈钢宽带材以及从此类带材切割的薄板/板材的尺寸和形状公差购买 正式版其他标准ISO...
Metallic Tube Connections for Fluid Power and General use - Part 2: 37° Flared Fittings [Tube Nuts] 14 [机械行业] JB /T 1308.10 (1) - 2011PN 250 MPa 外螺母 - DN3 PN 2500 Ultrahigh Pressure Valves and Fittings - Outer Nuts - DN3 ...
The most common ISO numbers are: 50, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000 and 6400. In recent years this scale has expanded to include 8000, 10000, 12800, 25600, 51200, 102400 and 204800!
WSK3-4002 12450*2500*1725 7500+1310+1310 6500 30500 11R22.5; 12R22.5; 11.00R20; 12.00R20 WSK3-4501 14030*2480*1725 8200+1310+1310 6720 30480 11R22.5; 12R22.5; 11.00R20; 12.00R20 WSK3-4502 14950*2480*1800 8690+1310+1310 8000 30480 11R22...
PN2500 Ultrahigh Pressure Valves and Fittings - Threaded Collars 16 [机械行业] JB /T 1308.7 - 2011PN2500 超高压阀门和管件 第7部分:螺套 PN2500 Ultrahigh Pressure Values and Fittings - Part 7 : Threaded Collars 17 [机械行业] JB /T 1308.11 - 1999PN 250MPa 内外螺套 ...