铸铁的基体组织的电位差小、电化学作用小，同时含硅量高，能够在表面形成连续的SIO2保护膜，因此其耐锈蚀性能远高于钢材，在相同的环境、介质中铸铁的耐锈性是钢材的3倍以上。连续灰口铸铁管的公称口径为75～1200毫米。直管长度有4米、5米及6米;按壁厚不同分LA、A和B三级。砂型离心灰口铸铁管的公称口径为200～1000毫米，有效长度有5米及6米；按壁厚不同分P、G两级。强度大、韧性好、管壁薄、金属用量少、能承受较高的压力。
Weifang Haiwang Pipe Industry Co., Ltd. is a specialized enterprise that produces flexible cast iron pipes, pipe fittings and radiators. After 30 years of unremitting efforts, Haiwang Pipe Industry Co., Ltd. has become a well-known supplier in the field of detection and drainage. The company takes the flexible port A type, W type cast iron pipe and pipe fittings as the leading products, and develops in many directions. Our company's Haiwang brand cast pipe industry has become a systematic product, and the company can produce products that meet the national standards according to your needs. A-type, W-type non-standard pipe fittings can be ordered.
Over the years, the company has introduced advanced production technology and equipment, researched and developed the “Haiwang” brand series products while utilizing the advantages of traditional technology. The company's flexible cast iron pipe fittings can be widely used in general, high-rise, super high-rise and land defense. District indoor and outdoor building drainage works.
Haiwang Pipe Industry Co., Ltd. regards the continuous improvement of product quality as the company's work outline. With advanced production technology, rigorous operating procedures, scientific testing methods, complete quality management system, precision casting of high-quality products, shaping the image of Haiwang. Producing qualified products that are recognized by the market is the quality goal that Haiwang Pipe Industry Co., Ltd. always pursues.
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