Supply of five drainage ductile iron pipe heaven manufacturers / ductile iron pipe specialized in manufacturing

Five drainage ductile iron pipe heaven manufacturers / ductile iron pipe professional manufacture of Liaocheng, Shandong Tiancheng Pipe Co., Ltd. specializing in the production of ductile iron pipe, small diameter seamless steel pipe, seamless steel pipe of large diameter stainless steel pipe, hot dip galvanized steel, all kinds of steel kinds of special specifications can be customized for the user, the special material seamless steel pipe, prompt delivery, quality and low price, welcome to order 15,063,536,111 15,069,589,959 Ge printed Wu www.sdtcgy.com 

 Ductile iron pipe is a kind of cast iron is an iron, carbon and silicon alloy. Nodular cast iron, graphite is a spherical form, generally the size of the graphite 6-7, and the spheroidized level control of the quality requirements of Ductile Iron Pipes 1-3 (ball rate of ≥ 80%), and thus the mechanical performance has been good improvement in the nature of the iron, steel performance. Ductile iron pipe after the annealing, the microstructure of ferrite plus a small amount of pearlite, good mechanical properties. 
 The main component of ductile iron pipe, carbon, silicon, manganese, sulfur, phosphorus and magnesium. The inner wall of spray zinc, cement, mortar, anti-corrosion materials. 

 The advantages of ductile iron pipe has a safe and reliable operation, low breakage rate, construction and easy maintenance, fast, and excellent corrosion resistance. 
 Shortcomings generally do not use resistance to low pressure. Because the tube is relatively heavy, the installation must be the use of machinery. 
 Product standards 
 GB / T 13295-2003 water and gas pipes with ductile iron pipes, fittings and accessories 
 GB / T 17457-1998 ductile iron pipes - Centrifugal cement mortar lining - General requirements 
 Of GB / T 17458-1998 ductile iron pipes - Centrifugal cement mortar lining of fresh mortar component testing 
 GB / T 17459-1998 ductile iron pipe bituminous coating 
 GB / T 17 456 ductile iron pipe exterior spray zinc 
 GB / T 17219-1998 in drinking water equipment and protective materials in the security evaluation criteria 
 Minimum tensile strength of ductile iron pipe: 420/Mpa minimum yield strength 300/Mpa minimum elongation of 7% 
 Ductile iron pipe diameter DN80-DN2600 
 Liaocheng heaven Pipe Co., Ltd. can be customized to provide users with a variety of special specifications, special material seamless steel pipe, prompt delivery, low prices, excellent quality, together with the original material or a copy of the holiday business as usual, agents steam transportation, fire, transportation and large in steel shipments. Clearing can also be acceptance. 
 Five drainage ductile iron pipe heaven manufacturers / ductile iron pipes specialized in manufacturing