QB 2003-1994食品工业用不锈钢对缝焊接管件.pdf

中华人民共和国行业标准QB/T 203—94食品工业用不锈钢对缝焊接管件主题内容与适用范围本标准规定了食品工业用不锈钢对缝焊接弯头、同心和偏心异径管、等径和异径三通（以下简称管件）的产品分类、技术要求、试验方法、检验规则和标志、包装、运输、贮存。本标准适用于食品、日用化工等工业用不锈钢对缝焊接管件。2引用标准GB1031表面粗糙度参数及其数值GB1048管道元件公称压力逐批检查计数抽样程序及抽样表（适用于连续批的检查）GB 2828GB2829周期检查计数抽样程序及抽样表（适用于生产过程稳定性的检查）GB12075食品工业用不锈钢管与配件不锈钢管3产品分类3.1型式与种类弯头分为不带直线段端的90°和180°两种，其结构型式如图1。3.1.13.1.2异径管分为同心和偏心异径管两种，其结构型式如图2。三通分为等径和异径三通两种，其结构型式如图3。3.1.3H2F(2F≤3D )图13.2尺寸3.2.190°和180°弯头的尺寸应符合表1规定。1995—05—01实施中国轻工总会1994--08—23批准-1 QB/T 2003—94表1mmBTFD管外径Do12.012221612.712.71.0302217.217.2382821.321.31.2354725.0251.61.2553833.733.71.61.2695038.0381.61.2725240.0401.61.262885151.01563.510709513376.176.115911488.988.9186135101.6101.62.0209152114.3114.3260190139.7139.7314230168.3168.3414305219.12196273.0273617455323.9323.9708530355.63552406.4406.43.2.2同心和偏心异径管的尺寸应符合表2规定。一2一 QB/T .2003—9412图2mm表2寸小端尺X尺端大T,D,TD12.012.712.717.212.01.017.221.312.712.0401.01.225.021.31.61.217.21.61.212.71.61.21.233.725.01.61.61.25021.31.61.01.217.21.6 QB/T, 200岁—94续表2mm附小端尺寸大端尺LTTD,D1.238.01.233.71.61.61.21.26025.01.61.61.221.31.01.61.21.240.038.01.61.61.21.26533.71.61.61.21.225.01.61.61.21.251.040.01.61.61.21.27038.01.61.61.21.233.71.61.61.263.551.01.61.27540.01.61.21.638.01.61.663.570.0801.251.01.6-4 QB/T. 2003-94mm续表　2小端尺寸寸端尺大LT1DiTD1.270.08040.01.670.076.11.61.663.5851.251.01.676.188.9901.670.0.63.52.02.088.9101.69576.11.670.0101.6114.32.010088.976.11.62.0114.3139.7130101.688.92.0139.7168.31402.6114.3101.6168.32.6219.1150139.72.0114.32.6219.1273.02.6180168.32.0139.75- QB/T 2003-94续表．.2mm时尺寸小端尺大端LT,TD;D273.0323.9200219.1168.32.6323.9355.63302.6273.0219.1355.6406.43503.2323.9273.0等径和异径三通的尺寸应符合表3的规定。3.2.3DTFF图3mm表3T1HFD,DT12.012.01612.712.71612.01.01.017.217.22212.71812.03 QB/T 2003-94续表3mmT,D,FTDH21.321.317.2251.0281.012.72112.01.21.225.025.01.61.61.221.3301.61.23517.2271.61.01.212.71.6231.212.01.61.21.233.733.71.61.61.21.225.0381.61.61.23521.3381.61.21.017.2311.61.22712.71.61.21.238.038.01.61.6501.21.233.7421.61.6 QB/f 2003-