铸铁排水管具有良好的机械性能作者: -1 发布时间: 2018-08-08 次浏览
柔性接口机制铸铁排水管与传统的手工砂铸承口管和PVC塑料管有着无可比拟的优势。欧美日本等各国一直采用柔性接口机制铸铁排水管作为建筑排水安装材料。由于历史和经济的原因,直到二OOO年我国才淘汰了砂模铸造铸铁排水管,并限制PVC排水管在高层建筑中的使用。1999年11月1日国家质量技术监督局参考美国铸铁排水管协会CISPI-301-1990标准制定并颁布了GB/T12772-1999《排水用柔性接口铸铁管及管件》标准。2003年1月14日国家建设部依照ISO6594:1995《铸铁排水管及配件》标准制定发布了CJ/T 177-2002《建筑排水用卡箍式铸铁管及管件》标准以及CJ/T 178-2003《建筑排水用柔性接口承插式铸铁管及管件》标准。根据1999年以来铸铁排水管发展状况,2008年9月11日国家质量监督检验检疫总局和国家标准化管理委员会在原有GB/T12772-1999标准的基础上制订和发布了GB/T12772-2008《排水用柔性接口铸铁管、管件及附件》标准。由此我们可以看出新型柔性接口机制铸铁排水管替代传统管材已经成为一种必然。The flexible interface mechanism Cast Iron Drainpipe has an unparalleled advantage compared with the traditional manual sand casting pipe and PVC plastic pipe. Countries such as Europe, Japan and other countries have been adopting flexible interface mechanism cast iron drainage pipe as building drainage installation material. Due to historical and economic reasons, it was not until OOO that cast iron drainage pipes were eliminated and PVC drainage pipes were restricted in high-rise buildings. In November 1, 1999, the state quality and Technology Supervision Bureau made reference to the CISPI-301-1990 standard of the American cast iron drainage pipe Association and promulgated GB/T12772-1999 "cast iron pipe and pipe fittings for drainage flexible interface". In January 14, 2003, the Ministry of State Construction and Construction issued the standard of CJ/T 177-2002 "cast iron pipe and pipe fittings for building drainage," and CJ/T 178-2003 "flexible interface cast iron pipe and pipe fittings for building drainage" in accordance with ISO6594:1995 "cast iron drainpipe and accessories" standard. According to the development of cast iron drains since 1999, on the basis of the original GB/T12772-1999 standards, the State General Administration of quality supervision, inspection and quarantine and the National Standardization Management Committee have formulated and issued GB/T12772-2008 "cast iron pipes, fittings and accessories for drainage flexible interfaces" on the basis of the original GB/T12772-1999 standards in September 11, 2008. From this we can see that the new flexible interface mechanism cast iron drain pipe instead of traditional pipe has become a necessity.
Due to the advantages of high strength, corrosion resistance, non flammable, low noise, low noise, long life, no deformation, good earthquake resistance, convenient installation and maintenance and beautiful appearance, the New Type Cast Iron Drainpipe has become the main material of the construction drainage system。 It has been widely applied in some high-grade public buildings and residential quarters, and has good prospects for development。
The flexible cast iron drain pipe is made of HT150 gray cast iron by centrifugal casting at high speed。 At present, the international common flexible interface mechanism, cast iron drainage pipe and fittings, is divided into two categories: no bearing and socket。 The newly promulgated standard GB/T12772-2008 "cast iron pipe, pipe fittings and accessories for drainage flexible interface" mainly adopts W, W1 type non bearing flexible pipe hoop and A type and B type socket flange to connect flexible interface cast iron drainpipe and pipe fittings。 For short, W, W, A and B。 The advantages of W and W1 are small occupying space and convenient installation and maintenance。 The advantage of A is high connection strength and convenient installation。 The advantages of B are high connection strength, convenient installation, and convenient connection with type W and W1 type no socket straight pipe。
The flexible interface mechanism, cast iron drainpipe, has strong material, excellent durability, heat resistance, mute and earthquake resistance.
1。 High material strength
The flexible Cast Iron Drainpipe has good mechanical properties, and its tensile strength is more than 150Mpa according to the standard, and the tensile strength of the superior products specified by the UPVC tube standard is only 43Mpa。 Its impact resistance and abrasion resistance are better than that of UPVC tube。
2。 The flexible cast iron drainpipe of durable high speed centrifugal casting has the advantages of compact structure, high strength, good corrosion resistance, abrasion resistance and aging resistance, and long service life。