球墨铸铁管件---双盘弯管 供应高质量管件全承三通、全盘三通、双承单支盘三通等三通、四通管件是我公司主营产品些列之一，以下为其特点：1 规格：DN80-DN2000，PN10、PN16 2 执行标准：ISO2531，EN545，En598，GB13295 生产优势：采用消失模工艺生产，周期短，质量上乘 产品优势:球墨铸铁材质，体积大，重量轻，方便安装 特殊功能：弹性好,钢度值低,耐腐蚀,耐高压。
　　工艺性能要求
　　表面质量
　　1.球墨铸铁管件内外表面必须光洁，不允许有裂缝、冷隔、错箱等妨碍使用的明显缺陷，凡使壁厚减薄的局部缺陷允许存在，但其深度不得超过（2+0.05T）mm其中T为管体壁厚。
　　2.球墨铸铁管件法兰备用轮廓清晰，不允许有影响使用的铸造缺陷。
　　3.征得需方同意，不影响使用的局部缺陷可予修补，但修补后的管件必须重新进行水压或气密性试验。
　　涂覆
　　1.球墨铸铁管件内外表面可以涂格沥清或其它防腐材料，若有特殊要求，同供需双方协商确定。
　　2.球墨铸铁管件用地给水时，卫生条件应符合卫生部门有关规定。
　　3.涂覆前，管件的内外应清理干净，涂覆后，内外表面应光洁，涂层均匀、牢固且不因气候的变化而发生异常。
　　3抗腐蚀性强、耐压抗弯好、接头方便、通水无异味无害健康等等
　　优越性
　　1.由于球墨铸铁管件采用柔性接头,施工操作较为方便,可提高施工效率、改善施工条件、降低施工成本,而且接口大部分采用胶圈连接,操作简便,能缩短工期,降低施工造价。
　　2.球墨铸铁管件具有承受供水压力高,能抵抗外部荷载和适应地质条件的变化,管材具有强度高、韧性好、耐腐蚀、柔性接口安装方便、抗震性强、劳动强度低等优点,可适用于地质差的地段和横穿公路,不需另外加工钢管, 再加上耐腐蚀性强,能适用于沿海和盐碱地带。在地下管线工程中广泛应用。大型管道安装工程更能体现其安装便捷,劳动强度低的优势。
　　3.球墨铸铁管件密封性能好,不易渗漏,可减少管网漏失率和降低管网日常维护费用。
　　球墨铸铁双法兰管件，欧标管件，美标管件，优质管件厂家。

　　Ductile iron pipe - double disc pipe supply high quality pipe full three pass, three pass, double single branch three pass, four way pipe fitting is one of our main products, the following is its characteristics: 1 Specifications: DN80-DN2000, PN16, PN10 2 standard: ISO2531, EN545, GB13295 production advantages: the use of lost foam casting process production, short, quality product advantages: small size, light weight, easy to install special features: good elasticity, low steel, corrosion resistance, high pressure.

　　Process performance requirements

　　Surface quality

　　1. Ball graphite cast iron pipe inside and outside surface must be smooth, not allowed to have cracks, cold insulation, the wrong box hinder the use of obvious defects, where the wall thickness thin local defects allowed to exist, but its depth shall not exceed (2+0.05T) mm and T tube wall thickness.

　　2 ductile cast iron pipe flange spare outline clear, does not allow the use of casting defects.

　　3. With the consent of the buyers consent, does not affect the use of local defects to be repaired, but after repairing the pipe must be re hydraulic or air tightness test.

　　Coating

　　1 .the inner and outer surface of the ductile cast iron pipe can be applied to the case of asphalt or other corrosion resistant materials, if there is a special requirement, the same as the supply and demand sides negotiated.

　　2 .the sanitary conditions of the ground water supply of the ductile iron pipe shall be in accordance with the relevant provisions of the health department.

　　3 .before coating, inside and outside the tube should be cleaned, coated, inside and outside the surface should be smooth, uniform coating, strong and not due to changes in climate and abnormal.

　　3 strong corrosion resistance, pressure resistance, good bending joint, convenient water and no smell of health hazard and so on

　　Superiority

　　1. Due to the use of flexible joint of nodular cast iron pipe, operation more convenient, improve construction efficiency, improve the construction conditions, reduce the construction cost, and most of the interfaces with rubber ring connection, simple operation, can shorten the construction period, reduce the construction cost.

　　2.ductile iron pipe with high pressure, can resist the external load and adapt to the changes of geological conditions, the pipe has the advantages of high strength, good toughness, corrosion resistance, flexible interface, strong resistance, low strength, low labor intensity, and can be applied to the geological difference of the lot and cross the Road, do not need to further processing steel pipe, coupled with strong corrosion resistance, can be applied to coastal and saline areas. Widely used in underground pipeline engineering. Large pipeline installation project is more capable of its installation is convenient, labor intensity is low.

　　3.ball graphite cast iron pipe sealing performance is good, not easy to leakage, can reduce the loss of pipe network leakage rate and reduce the daily maintenance costs of the pipe network.

　　Nodular cast iron double flanged fittings, European standard pipe fittings, pipe fittings manufacturers American Standard, quality.