Shanxi Longfa Trade Co., Ltd: Nodular cast iron has the advantages of high strength, good plasticity, and strong corrosion resistance. The specifications of the cast pipe are from DN80-2600mm, and there are various types of interface such as T, K, N, S. Nodular iron pipe fittings strictly implement the international standard ISO2531, EN545 standard, the manhole cover implements the EN124 standard. The specifications of pipe fittings are DN80-DN800, and the production can be arranged.