镀锌钢管验收标准及质量检验方法1．化学成分分析：化学分析法、仪器分析法（红外C—S仪、直读光谱仪、zcP等）①红外C—S仪：分析铁合金，炼钢原材料，钢铁中的C、S元素②直读光谱仪：块状试样中的C、Si、Mn、P、S、Cr、Mo、Ni、Cn、A1、W、V、Ti、B、Nb、As、Sn、Sb、Pb、Bi③N—0仪：气体含量分析N、O2．钢管几何尺寸及外形检查：①钢管壁厚检查：千分尺、超声测厚仪，两端不少于8点并记录②钢管外径、椭圆度检查：卡规、游标卡尺、环规，测出最大点、最小点③钢管长度检查：钢卷尺、人工、自动测长④钢管弯曲度检查：直尺、水平尺（1m）、塞尺、细线测每米弯曲度、全长弯曲度⑤钢管端面坡口角度和钝边检查：角尺、卡板.3．钢管表面质量检查：100%①人工肉眼检查：照明条件、标准、经验、标识、钢管转动②无损探伤检查：a.?超声波探伤UT：对于各种材质均匀的材料表面及内部裂纹缺陷比较敏感标准：GB/T5777-1996?级别：C5级b.?涡流探伤ET：（电磁感应）主要对点状（孔洞形）缺陷敏感标准：GB/T7735-2004?级别：B级c.?磁粉MT和漏磁探伤：磁力探伤，适用于铁磁性材料的表面和近表面缺陷的检测。
标准：GB/T12606-1999?级别：?C4级d.?电磁超声波探伤：不需要耦合介质，可以应用于高温高速，粗燥的钢管表面探伤e.?渗透探伤：荧光、着色、检测钢管表面缺陷4．钢管理化性能检验：①拉伸试验：测应力和变形，判定材料的强度（YS、TS）和塑性指标（A、Z）纵向，横向试样管段、弧型、圆形试样（￠10、￠12.5）?小口径、薄壁大口径、厚壁定标距注：试样断后伸长率与试样尺寸有关?GB/T1760②冲击试验：CVN、缺口C型、V型、功J?值J/cm2标准试样10×10×55（mm）非标试样5×10×55（mm）③硬度试验：布氏硬度HB、洛氏硬度HRC、维氏硬度HV等④液压试验：试验压力、稳压时间、?p=2Sδ/D5．钢管工艺性能检验：①压扁试验：圆形试样?C形试样（S/D＞0.15）?H=（1+2）S/（∝+S/D）L=40～100mm（提供）?单位长度变形系数=0.07～0.08②环拉试验：L=15mm?无裂纹为合格③扩口和卷边试验：顶心锥度为30°、40°、60°④弯曲试验：可代替压扁试验（对大口径管而言）6．无缝钢管金相分析：①高倍检验（微观分析）非金属夹杂物100xGB/T10561?晶粒度：级别、级差?组织：M、B、S、T、P、F、A-S脱碳层：内、外A法评级：A类-硫化物?B类-氧化物?C类-硅酸盐?D-球状氧化?DS类②低倍试验（宏观分析）：肉眼、放大镜10x以下a.?酸蚀检验法、b.?硫印检验法（管坯检验，显示低培组织及缺陷，如疏松、偏析、皮下气泡、翻皮、白点、夹杂物等。
c.?塔形发纹检验法：检验发纹数量、长度及分布各种管材外径重量对照表无缝钢管#10-20公称内径外径壁厚理论重量单位材料单价劳务单价合价15202.00.89m20252.51.39m25323.02.15m32383.02.59m40453.53.58m50573.54.62m65764.07.10m80894.59.38m1001084.511.49m1251335.015.78m1501595.018.99m2002196.524.06m2502738.052.28m3003259.070.14m35037711.099.29m40042611.0112.58m45048011.0127.22m50053012.0154.29m60063012.0183.88m无缝钢管（镀锌）白公称内径外径壁厚理论重量单位材料单价劳务单价合价2002196.524.66m2502738.053.59m3003259.071.89m35037711.0101.77m40042611.0115.39m45048011.0130.40m50053012.0158.15m60063012.0188.48m螺旋焊钢管（镀锌）白公称内径外径壁厚理论重量单位材料单价劳务单价合价200219.16.032.03m250273.07.046.42m300323.98.062.82m350355.68.069.08m400406.49.088.70m450457.010.0110.74m500508.010.0123.31m600610.010.0148.47m焊接钢管公称内径外径壁厚理论重量单位材料单价劳务单价合价1521.302.751.26m5.943.522026.802.751.63m7.333.912533.503.252.42m10.784.463242.303.253.13m13.904.914048.003.503.84m5060.003.504.88m6575.503.756.64m8088.504.008.34m100114.004.0010.85m125140.004.0013.42m150165.004.5017.81m焊接钢管（镀锌）公称内径外径壁厚理论重量单位材料单价劳务单价合价1521.302.751.34m2026.802.751.73m2533.503.252.57m3242.303.253.32m4048.003.504.07m5060.003.505.17m6575.503.757.04m8088.504.008.84m100114.004.0011.50m125140.004.0015.94m150165.004.5018.89m不锈钢管SUS304公称内径外径壁厚理论重量单位材料单价劳务单价合价15202.00.936m20252.51.450m25323.02.232m32383.02.695m40453.53.760m50573.54.851m65764.07.428m80894.59.770m1001084.511.971m1251335.016.400m1501595.019.737m2002196.535.176m2502738.053.770m3003259.071.990m35037711.0102.055m40042611.0115.730m不锈钢管SUS316公称内径外径壁厚理论重量单位材料单价劳务单价合价15202.00.936m20252.51.450m25323.02.232m32383.02.695m40453.53.760m50573.54.851m65764.07.428m80894.59.770m1001084.511.971m1251335.016.400m1501595.019.737m2002196.535.176m2502738.053.770m3003259.071.990m35037711.0102.055m40042611.0115.730m冷媒铜管（紫铜管）公称内径外径壁厚理论重量单位材料单价劳务单价合价6.46.40.80.126m9.59.50.80.195m12.712.71.00.328m15.9015.901.000.418m19.0519.051.200.600m22.2022.201.200.706m25.4025.401.200.813m28.6028.601.200.921m31.8031.801.301.110m34.9034.901.301.223m38.1038.101.401.439m44.2044.201.501.800m50.8050.801.802.470m54.1054.101.802.634m理论重量=（外径－壁厚）×壁厚×0.028给水铜管公称内径外径壁厚理论重量单位材料单价劳务单价合价Φ6Φ61.00.140mΦ8Φ81.00.196mΦ10Φ101.00.252mΦ12Φ121.00.308mΦ15Φ151.00.392mΦ18Φ181.20.565mΦ22Φ221.20.649mΦ28Φ281.20.901mΦ35Φ351.31.227mΦ42Φ421.41.592mΦ54Φ541.92.772mΦ67Φ672.03.640mΦ85Φ852.54.750mΦ108Φ1082.57.390mΦ133Φ1333.010.920mΦ159Φ1593.515.24mΦ219Φ2194.024.08m钢塑复合管（冷水型）公称内径外径壁厚理论重量单位材料单价劳务单价合价15?22m20?27m25?34m32?42m40?48m50?60m65?76m80?89m100?114m125?140m150?165m200?219m钢塑复合管（热水型）15?22m20?27m25?34m32?42m40?48m50?60m65?76m80?89m100?114m125?140m150?165m200?219m球墨铸铁管公称内径外径壁厚理论重量单位材料单价劳务单价合价10024.50m15037.00m20051.00m25068.00m30085.60m400128.00m500173.80m600285.50m700356.75m低压流体输送用焊接钢管尺寸及重量公称口径外径普通管加厚管单位壁厚(mm)理论重量壁厚(mm)理论重量610.002.000.392.500.46m813.502.250.622.750.73m1017.002.250.822.750.97m1521.252.751.263.251.45m2026.752.751.633.502.01m2533.503.252.424.002.91m3242.253.253.134.003.78m4048.003.503.844.254.58m5060.003.504.884.506.16m6575.503.756.644.507.88m8088.504.008.344.759.81m100114.004.0010.855.0013.44m125140.004.0013.425.5018.24m150165.004.5017.815.5021.63m计算公式：W(kg/m)=0.02466*厚度*（外径-壁厚）[文档可能无法思考全面，请浏览后下载，另外祝您生活愉快，工作顺利，万事如意!]7 / 8。