Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron pipe ductile iron pipe factory price, high quality ductile iron pipe, flexible cast iron pipe fittings, cast iron pit wells quality of our products. Flexible pipe expansion joints pickling rust generally conducted with sulfuric or hydrochloric acid. Sulfuric acid concentration is generally from 10 to 15, the soaking time at room temperature, the acid is heated to such a heat, rust markedly accelerated. The preparation of sulfuric acid solution, sulfuric acid should be slowly poured into water, sulfuric acid into the water is prohibited. Immersed in the acid at room temperature in a predetermined time range. Use the flexible pipe expansion joints acid washed with water, sodium carbonate solution with a concentration of 50 and finally washed with water 2-3 times, and dried. Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron water pipes with ductile iron pipe prices, ductile iron pipe, cast iron pipe fittings of high quality flexible cast iron pit wells quality of our products. Purity of ductile iron pipe fittings have an important role, and therefore requires careful selection of ductile iron pipe fittings, it is because superalloy forging ductile iron pipe fittings is the center of the central idea of ??aviation spare parts sent materials, quality ductile iron pipe air directly affect the life of the hair ideas, and the safety of aircraft. Become a hot topic. [Price] Northern Taiwan ductile iron pipe, ductile iron pipe factory price, Shunxiang ductile pipe provided by Shunxiang ductile pipe. Welcome to consult Liaocheng Shunxiang Building Materials Co. (www.lcsxjc.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Manager Ge