偏心异径管产品介绍：偏心异径管的质量应符合现行***标准，异径管尺寸允许偏差应符合表4.2.2-3的规定。异径管外观不应有裂纹、重皮，壁厚应大于大径端管段的壁厚，异径管的圆度不应大于相应端外径的1%，且允许偏差为&plu***n;3mm；同心异径管两端中心线应重合，其偏心值允许偏差为&plu***n;5mm。大小头(异径接头)尺寸mm(GB12459GB/T13401)(SH3408SH3409)。公称通径端部外径背面至端面尺寸长度LA系列B系列A系列B系列25*2033.73226.9255125*1533.73221.31832*2542.43833.7325132*2542.43826.92532*1542.43821.31840*3248.34542.4386440*2548.34533.73240*2048.34526.92550*4060.35748.3457650*3260.35742.43850*2560.35733.73265*5076.17660.3578965*4076.17648.34565*3276.17642.43880*6588.98976.17689805088.98960.35780*4088.98948.345100*8088.910888.989102100*65114.310876.176100*50114.310860.357125*100114.3133114.9108127125*80139.713388.989125*60139.713376.176150*125139.715939.1133140150*100168.3159114.3108150*80168.315988.989200*150168.3219168.3159152200*125219.1219139.7133200*100219.1219114.3108250*200219.1273219.1219178250*125273273168.3159250*150273273139.7133300*250273325273273203300*200323.9325219.1219300*150323.9325168.3159350*300323.9377323.9325330350*250355.6377273273350*200355.6377219.1219400*350355.6426355.6377356400*300406.442632.9325400*250406.4426273273450*400406.4478406.4426381450*350457.0478355.6377450*300457.0478323.6325500*450457.0529457.0478508500*400508529406.4426500*350508529355.6377)