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1、方管理论重量表、计算公式型号理论重量（kg/m）型号理论重量20*20*1.20.7550*30*2.53.0225*25*1.20.9450*30*33.640*40*22.2950*32*22.240*40*2.53.0250*35*2.53.3240*40*44.6855*38*22.850*50*2.53.8160*40*2.53.8150*50*34.4460*40*34.4450*50*45.7460*40*45.7460*60*2.54.5270*50*47.0260*60*35.3880*60*37.0960*60*47.0280*60*48.2270*70*48.2280*6
2、0*510.2570*70*510.290*40*2.55.1980*80*49.9690*60*510.4780*80*613.85100*60*37.3100*100*411.65100*60*49.16100*100*823100*60*511.53方管理论重量表、计算公式kg/m)120*120*414.16160*160*4.519.2100*60*4.5160*80*4.514.4115.8427.1220*80*6计算公式：4x壁厚x（边长-壁厚）x7.85其中，边长和壁厚都以毫米为单位，直接把数值代入上述公式，得出即为每米方管的重量，以克为单位。如30x30x2.5毫米的方管，
3、按上述公式即可算出其每米重量为：7.85克，得4x2.5x（30-2.5）x7.85=275x7.85=2158.75克，即约2.16公斤当壁厚和边长都以毫米为单位时，4x壁厚x（边长-壁厚）算出的是每米长度方管的体积，以立方厘米为单位，再乘以铁的比重每立方厘米出即为每米方管以克为单位的重量。如30x30x2.5毫米的方管，按上述公式即可算出其每米重量为：4x2.5x（30-2.5）x7.85=275x7.85=2158.75克，即约2.16公斤7.85克，得出即为每米方管以克为单位当壁厚和边长都以毫米为单位时，4x壁厚x（边长-壁厚）算出的是每米长度方管的体积，以立方厘米为单位，再乘以铁的比
4、重每立方厘米的重量。正方形和长方形（矩形）截面碳钢计算公式：每米重量单位：kg/m（千克/米）&lb/ft（磅/英尺）公式:kg/m=（Oc-4Wt）*Wt*0.00785长方形Oc=2a+2ba,b是边长其中：Oc是外周长，Wt是壁厚；正方形Oc=4*a管径（mm）厚度（mm）元/支kg/支元/吨10口100.5018.70.912070010口100.6024.21.092200010口100.7028.81.262250010口100.80331.432330010口100.9038.51.592390010口101.00431.752420010口101.20442.0718700无缝
5、方管直销处*天津无缝方管供应商（方管价格表&无缝方管理论重量大全表12.5口12.50.6027.51.371980012.5口12.50.7027.51.592030012.5口12.50.80371.812100012.5口12.51.00502.232400012.5口12.51.2(A)532.642300012.5口12.51.20602.642280012.5口12.51.5(A)663.232200012.5口12.51.50733.232640015.2口15.20.50251.411790015.2口15.20.60321.681890015.2口15.20.70391.95
6、1980015.2口15.20.80442.2220100无缝方管价格表:无缝方管直销处*天津无缝方管供应商（方管价格表&无缝方管理论重量大全表15.2口15.20.90502.482100015.2口15.21.00572.742200015.2口15.21.2(A)643.262310015.2口15.21.20683.262090015.2口15.21.5(A)804.001980019.1口19.10.60392.131680019.1口19.10.70472.471810019.1口19.10.80552.811970019.1口19.10.90643.151920019.1口19.
7、11.00713.491920019.1口19.11.2(A)794.151900019.1口19.11.20844.152030019.1口19.11.5(A)945.121880019.1口19.11.501165.122230019.1口19.12.0(A)1406.682050019.1口19.12.001606.682390020口201.00763.6620600无缝方管价格表:无缝方管直销处*天津无缝方管供应商(方管价格表&无缝方管理论重量大全表20口201.2(A)854.351940020口201.5(A)1015.381880020口201.501265.382210020
8、口202.0(A)1437.022020020口202.001657.022360022.2口22.20.60462.481870022.2口22.20.70562.891836022.2口22.20.80663.292010022.2口22.20.90773.6820500无缝方管价格表:无缝方管直销处*天津无缝方管供应商（方管价格表&无缝方管理论重量大全表22.2口22.21.00844.082060022.2口22.21.2(A)934.861930022.2口22.21.201004.862040022.2口22.21.5(A)1126.001870022.2口22.21.501326
9、.002200022.2口22.22.0(A)1597.862040022.2口22.22.001887.862710025.4口25.40.60512.851810025.4口25.40.70633.311860025.4口25.41.00934.691910025.4口25.41.2(A)1025.591840025.4口25.41.201105.591970025.4口25.41.5(A)1246.921790025.4口25.41.501436.922110025.4口25.42.0(A)1719.071880025.4口25.42.002009.072210025.4口25.42.5
10、026111.162340025.4口25.43.0033113.162510030口300.60613.371820030口300.70733.931870030口300.80874.471930030口300.901085.021990030口301.001125.5620100无缝方管价格表:无缝方管直销处*天津无缝方管供应商（方管价格表&无缝方管理论重量大全表30口301.201326.641990030口301.5(A)1498.231810030口301.501768.232130030口302.0(A)22910.832120030口302.5031013.352230030口3
11、03.0039015.792470031.8口31.81.001225.912040031.8口31.81.2(A)1357.051910031.8口31.81.201437.052040031.8口31.81.5(A)2208.751870031.8口31.81.501918.752200031.8口31.82.0(A)21111.511880031.8口31.82.0023211.511980031.8口31.82.5032914.202300031.8口31.83.004037.102010038.1口38.11.2(A)1608.491870038.1口38.11.201698.491
12、9900无缝方管价格表:无缝方管直销处*天津无缝方管供应商（方管价格表&无缝方管理论重量大全表38.1口38.11.5022510.542140038.1口38.12.0(A)25813.911870038.1口38.12.0030313.912200038.1口38.12.5038317.202230038.1口38.13.0047620.422230040口401.001517.472020040口401.2(A)1678.921880040口401.201788.922000040口401.5(A)20211.091830040口401.5023811.092190040口402.0(A)26914.631840040口402.0031514.632180040口402.5040218.1122400无缝方管价格表:无缝方管直销处*天津无缝方管供应商（方管价格表&无缝方管理论重量大全表40口403.0044321.502330050口501.001879.372000050口501.2(A)20911.211870050口501.2022211.211980050口50
