今日我厂无缝钢管无缝无缝钢管价格动态

　无缝机械用无缝无缝钢管标准GB/T3639国度标准GB/T8713国度标准用处用于机械构造、液压构造、液压和蔼动缸筒的制造.重要临盆钢管商标10、20、35、45等化学成份、机械机能化学成分参照响应的国度标准或国外标准商标交货状况冷加工/硬(Y)冷加工/软(R)清除应力退火(T)抗拉伸强度(MPa)伸长率(%)抗拉伸强度(MPa)伸长率(%)抗拉伸强度(MPa)伸长率(%)≥10412637310333122051054518432103558845496520845647462856087无缝无缝钢管单位重量表外径壁厚单重kg/m外径壁厚单重外径壁厚单重kg/m3632.441141230.18170520.344054.32108410.26172624.56452.52.62114718.471801041.92515.56.1712110.528.611841250.90552.53.2412713.537.791941774.206056.781194.512.71192627.52636.59.0613311.534.46194732.28657.510.631401546.4220311.554.31701014.801401032.0621919.595.936557.401461342.64216841.03707.511.56135516.032199.549.087058.011407.524.5124020108.501757.512.4815213.546.1124522.5123.456934.881591759.5324512.571.67724.57.49152621.6027326.5161.09766.511.141599.535.002701064.12831018.0016311.542.9629924.5165.80836.512.261681453.1732522.5167.8486815.391781974.5032512.596.338636.141802078.9135125.5204.68957.516.18160519.1137738.6321.381021124.681636.525.0935115.5128.241081432.45168935.2937728.5224.931036.515.471781456.6042613132.40108921.971801561.0348040434.0220#45#无缝无缝钢管20#45#无缝无缝钢管力学机能钢种力学机能冷拔(轧)管金切管20#抗拉强度σbN/mm2伸长率δ5%≥510≥390≥5≥2045#≥647≥590≥4≥4加工情势缸径长度直线度尺寸精度内孔粗拙度冷轧30100≤12M0.31.0H8H100.41.6冷拔30250≤12MH8H100.81.6珩磨40500≤12M1000H8H90.40.8滚压40400≤7MH80.4尺寸公差尺寸公差(壁厚误差±5%)内径尺寸H8H9H1030+0.0330+0.0520+0.0840＞3050+0.0390+0.0620+0.1000＞5080+0.0460+0.0740+0.1200＞80120+0.0540+0.0870+0.1400＞120180+0.0630+0.1000+0.1600＞180250+0.0720+0.1150+0.1850＞250315+0.0810+0.1300+0.2100＞315400+0.0890+0.1400+0.2300