Chiho quality Hebei Industry 304 concentric reducer should be consistent with existing national standards, "welded steel seamless pipe fittings" GB / T 12459-2005, and should meet the following requirements: roundness 1) 304 concentric size head should not be greater than the outer diameter of the corresponding end of 1% 12cr1movg diameter pipe, and tolerance of ± 3mm, concentric reducer centerline ends should overlap, their eccentricity tolerance of ± 5mm. 2) 304 concentric size head in appearance shall crack, heavy leather wall thickness greater than the thickness of the large diameter end of the pipe section 304 concentric size head inside 12459-2005 standard tolerances DN15-65 caliber: +1.6 -0.8 inner diameter: ± 0.8 height: ± 2DN80-100 caliber : ± 1.6 inner diameter: ± 1.6 height: ± 2DN125-200 Diameter: +2.4 -1.6 inner diameter: ± 1.6 height: ± 2DN250-450 Diameter: +4 -3.2 inner diameter: ± 3.2 height: ± 2DN500-800 caliber: +6.4 - 4.8 inner diameter: ± 4.8 height: DN500-600 ± 2 DN650-750 ± 3 DN800 ± 5 nominal wall thickness of not less than 87.5% of the wall thickness of the roundness deviation of plus or minus the sum of the absolute values. But generally below 500 roundness within 4MM. Quality 15316L head size should be consistent with existing national standards, size, head size tolerances shall comply with standards. Roundness head size should not exceed 1% of the respective ends of the outer diameter of the eccentric head appearance should not have cracks, heavy leather wall thickness greater than the thickness of the large diameter end of the tube segment, and tolerance of ± 3mm; concentric size head centerline ends should overlap, their eccentricity tolerance of ± 5mm. Hebei Chiho Pipe; stainless steel diameter pipe safety and reliability, health, environmental protection, affordable eccentric reducer, thinning pipelines and new reliable, simple and convenient method to develop a successful connection, it has more other pipe can not be replaced The advantage reducer 304, Engineering will be more and more use will become increasingly popular, stainless steel diameter pipe diameter pipe prospects Yulin |. Hebei Chiho | diameter pipe from Hebei Chiho industry limited company. Yulin reducers | Hebei Chiho | Chiho-diameter pipe Hebei Industry Co., Ltd (www.hbqh628.com) (www.hbqh628.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page or on the telephone picture to obtain the latest information, contact: Yang Qinglong.