方鋼尺寸規(guī)格表1

1、方鋼尺寸規(guī)格表(1)尺寸規(guī)格見表6 40-表6 45。 國標(biāo)號(hào)GB/76728-2007表6-40冷拔無縫方形鋼管的尺寸規(guī)格基本尺寸截面面積F/ cm2理論質(zhì)量G/ (kg / m)慣性矩Jx=Jy/ cm4截面系數(shù)W=W/ cm3ASmm120 423141618200 4532212725330343233 78324335453363.4l43.8l540344.316.1156342456454564578455067.81784555678604567814.01456567847056707845756718 218458067856781005678110789注：理論質(zhì)量計(jì)算G

2、=(A+A 一式中 G每米鋼管的質(zhì)量(kg / m);A方形鋼管的邊長(mm);S方形鋼管的公稱壁厚(mm).以鋼管只=時(shí)，鋼的密度為7.85g / cm3的計(jì)算公式。表6-41冷拔無縫矩形鋼管的尺寸規(guī)格r& 2洱基本尺寸截面面積F/ cm2理論質(zhì)量G/(kg / m)慣性矩截面系數(shù)ABSJxJyWxwymmcm4cm3105l125l0, 06466l14617l10120.7311561216820.5910.042112120.891912181010.23120.89114120.83181220101212120.23110.2712291214120.3410.6611241221

3、.2l11022511520.8412811120.951141211621.2l1282223301221.7133213230.751161.312325232351433.2l2361832822371532.613.9142401631.3l4220347.01225348.314230222.7l453034483022503234 4125538347 49604048.7l545705067458060626 4774590606718 205610070785615.8111075781208067896713085897814080986.81107266,081507591

4、08928,16160651011注：理論質(zhì)量計(jì)算。G=(A+B 式中 G每米鋼管的質(zhì)量(k(m);A、B矩形鋼管的長與寬(mm);S矩形鋼管的公稱壁厚(mm)。以鋼管只=時(shí)，鋼的密度為7-85g / cm3的計(jì)算公式。表6-42冷拔無縫橢圓形鋼管的尺寸規(guī)格基本尺寸截面面積理論質(zhì)量慣性矩截面系數(shù)ABSFCJxJYWxWymm/cm2/ (kg / m)cm4cm363841O.012llO510.00331IO7112410.00231O.024l6l0.03511471O.042l155l0.2610.00481168l0.080l188l91201010.1211210.181248l0.

5、2411210.291261310.5810.381301010.3610.481301510.271O.36l18l0-832O.44l341710.3414332210.651442221.6l115210-8144523212822.8l5025125.313417212lO.23l3618120.6410.8213826121402021.3l1433250391215117254281212325535121.6110.981562822.5l2.5l6020122.3113021643221653523.7l11.61662221.2l70352722422.812.2115.9l

6、2_81763825.11804028127242210.915629.4l903024.5l注：理論質(zhì)量計(jì)算G=(A+B 2S)式中 G每米鋼管的質(zhì)量(kg / m);A、B橢圓形鋼管的長軸、短軸(mm);S橢圓形鋼管的公稱壁厚(mm)。以鋼的密度為7.85g/cm3 的計(jì)算公式。表6-43冷拔無縫平橢圓形鋼管的尺寸規(guī)格尺 /azr基本尺寸截面面積F/cm2理論質(zhì)量C/ (kg / m)慣性矩截面系數(shù)ABSJxJYWxWymmcm4cm36384193105112416l1471155l0.06710.10116810.1310.1210.098111720.10110.121186210.

7、43118920.731120102121720.331812l0.3511220.19112522613120.9510.22112720.90110.2712301010.22120.571l0.3411523417121O.33l361223913121.0l10.631402021451525025121511721.812011.416023012.9l211.612.7l643223.91l1.2l6622211.2l,4691721703525.2l722423.9l804028127290302注：理論質(zhì)量計(jì)算G=(A+ 式中 G每米鋼管的質(zhì)量(kg/m)A、B平橢圓鋼管的長與

8、寬(mm);S平橢圓鋼管的公稱壁厚(mm)。以鋼的密度為7.85g/cm3 的計(jì)算公式。表6-44冷拔無縫內(nèi)外六角形鋼管的尺寸規(guī)格基本尺寸截面面積F/cm2理論質(zhì)量C/ (kg / m)慣性矩截面系數(shù)BSJx=JYWxWymmcm4cm382O.047l102O.077l122O.12l1420.6310.141O.2OI172O.33l31.201O.47l19232220.891O.7013O.78l20.8512432.11420.961273421.911.2l3031.8l43221.61342.3l21.8136343414534646.315322.915548.01536545

9、4755648.7185564955618.214105518.716注：理論質(zhì)量計(jì)算G=(B 式中 G每米鋼管的質(zhì)量(kg / m);B六角鋼管的對邊距離(mm)S六角鋼管的公稱壁厚(mm)。以鋼管只=時(shí)，鋼的密度為cm3的計(jì)算公式。表6-45冷拔無縫直角梯形鋼管的尺寸規(guī)格基本尺寸截面面積F/cm2理論質(zhì)量G/ (kg / m)慣性矩截面系數(shù)ABHSJxJx1WBWWmmcm4cm325103026.5l30252021.0l4.0l303225202203535302522530245406032505040353030356045309.912.6l2405348475550406055

10、50注：理論質(zhì)量計(jì)算aG=(2hs+AS+BS-+O.01746a a tan2H a=ascta nA-B式中 G每米鋼管的質(zhì)量(kg/m);A直角梯形鋼管的下底(mm);B直角梯形鋼管的上底(mm)；H直角梯形鋼管的高(mm)；S直角梯形鋼管的公稱壁厚(mm)。以上鋼管只=時(shí)，鋼的密度為7.85g / cm3的計(jì)算公式。允許偏差見表6-46、表6-47表6-46冷拔無縫異型鋼管的尺寸允許偏差尺寸/mm精確度邊凹凸度壁厚/mm精確度普通級高級普通級高級普通級高級邊長W 30 0.3mm士 0.2mm0.2mm0.1mm30 50 0.4mm 0.3mm0.3mm0.15mml3+15%-10

11、%+12%-10%50 75%3+12%10%751 %士%-10%注：1.鋼管通常長度為-9m。2. 精度等級應(yīng)在合同中注明，如未注明則按普通級供應(yīng)。3. 經(jīng)供需雙方協(xié)議，壁厚4mm的鋼管允許偏差亦可按：+%-15%交貨。表6-47冷拔無縫異型鋼管的彎曲度和扭轉(zhuǎn)值鋼管的彎曲度對方形、矩形、直角梯形鋼管的扭轉(zhuǎn)值精度等級彎曲度/ (mm/m)總彎曲度（%）鋼管邊長/ mm每米鋼管允許最大扭轉(zhuǎn)值/ mm普通級530 50高級350 7575力學(xué)性能見表6-48。表6-48冷拔無縫異型鋼管的力學(xué)性能牌 號(hào)抗拉強(qiáng)度 o b/MPa屈服點(diǎn)o s /MPa伸長率5 5( % )10335205241537522522203902