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["不 锈 钢 无 缝 管 常 用 国 内 外 标 准 尺 寸 对 照 表"]
[null,"GB13296-2007",null,"GB/T14976-2002",{"$nulls":3},"ASTM A213/A213M",null,null,"ASTM A312/A312M"]
["外径偏差（mm）","外径","允许偏差","类别","外径","允许偏差",null,"类别","外径","允许偏差","10.3~48.3","+0.40/-0.80"]
[null,"6～30","+0.15/-0.20",null,null,"普通级","高级","热精整管","≤101.6","＋0.4/-0.8","＞48.3~114.3","+0.80/-0.80"]
[null,"＞30～50","±0.30","挤压管","68~159","±1.25％D","±1.0％D",null,"﹥101.6~190.5","＋0.4/-1.2","＞114.3~219.1","+1.60/-0.80"]
[null,"＞50","±0.75%D",null,"﹥159~426","±1.5％D",null,null,"﹥190.5~228.6","＋0.4/-1.6","＞219.1~457","+2.40/-0.80"]
[{"$nulls":3},"冷拔（轧）管","6~10","±0.20","±0.15","冷精整管","﹤25.4","＋0.1/-0.1","＞457~660.4","+3.20/-0.80"]
[{"$nulls":4},"﹥10~30","±0.30","±0.20",null,"25.4~38.1","＋0.15/-0.15","＞660.4~864","+4.00/-0.80"]
[{"$nulls":4},"﹥30~50","±0.40","±0.30",null,"﹥38.1~50.8","＋0.2/-0.2","＞864~1219","+4.80/-0.80"]
[{"$nulls":4},"﹥50","±0.9％D","±0.8％D",null,"≥50.8~63.5","＋0.25/-0.25"]
[{"$nulls":8},"≥63.5~76.2","＋0.3/-0.3"]
[{"$nulls":8},"≥76.2~101.6","＋0.38/-0.38"]
[{"$nulls":8},"﹥101.6~190.5","＋0.38/-0.64"]
[{"$nulls":8},"﹥190.5~228.6","＋0.38/-1.14"]
["壁厚偏差（mm）","壁厚","允许偏差","类别","壁厚","允许偏差",null,"类别","壁厚","允许偏差","壁厚","允许偏差"]
[null,"D≤38","+20%S/0%S",null,null,"普通级","高级","热精整管","≤2.4","＋40％/-0","3.2~63.5","＋20％/-12.5%"]
[null,"D＞38","+20%S/0%S","挤压管","﹤15","+15%S/-12.5%S","±12.5％S",null,"﹥2.4～3.8","＋35％/-0","76.2~457,t/D≤5%","＋22.5％/-12.5%"]
[{"$nulls":4},"≥15","+20%S/-15%S",null,null,"﹥3.8～4.6","＋33％/-0","76.2~457,t/D﹥5%","＋15.0％/-12.5%"]
[{"$nulls":3},"冷拔（轧）管","≤3","±14%S","+12.5S/-10%S",null,"﹥4.6","＋28％/-0","≥508","＋17.5％/-12.5%"]
[null,"冷拔（轧）热交换器管，正公差交货",null,null,"﹥3","+12.5S/-10%S","±10%S","冷精整管","外径≤38.1mm","＋20％/-0","≥508,t/D≤5%","＋22.5％/-12.5%"]
[{"$nulls":8},"外径﹥38.1mm","＋22％/-0","≥508,t/D﹥5%","＋15.0％/-12.5%"]
[null,"DIN17456",null,null,"DIN17458",null,null,"ASTM A789/A789M"]
["外径偏差（mm）","外径","公差等级","允许偏差","外径","公差等级","允许偏差","外径","允许偏差"]
[null,"da≤219.1","D2","±1%,                   最小±0.5mm","da≤219.1","D2","±1%,                  最小±0.5mm","≤12.7","±0.13"]
[{"$nulls":7},"﹥12.7~38.1","±0.13"]
[null,null,"D3","±0.75％，            最小±0.3mm",null,"D3","±0.75％，         最小±0.3mm","﹥38.1~88.9","±0.25"]
[{"$nulls":7},"﹥88.9~139.7","±0.38"]
[null,null,"D4","±0.5％，            最小±0.1mm",null,"D4","±0.5％，           最小±0.1mm","﹥139.7~203.2","±0.76"]
[]
["壁厚偏差（mm）","壁厚","公差等级","允许偏差","壁厚","公差等级","允许偏差","外径","壁厚允许偏差＊"]
[null,"da≤219.1","T3","±10%,                        最小±0.2mm","da≤219.1","T3","±10%,                  最小±0.2mm","≤12.7","±15％"]
[{"$nulls":7},"﹥12.7~38.1","±10％"]
[null,null,"T4","±7.5%,                   最小±0.15mm",null,"T4","±7.5%,             最小±0.15mm","﹥38.1~88.9","±10％"]
[{"$nulls":7},"﹥88.9~139.7","±10％"]
[{"$nulls":7},"﹥139.7~203.2","±10％"]
[{"$nulls":7},"＊薄壁管的定义及壁厚偏差见标准"]