This morning we learned that a 6.2-magnitude earthquake occurred in Jishishan County, Gansu Provi

TongYu is the largest production base of ductile iron pipe mould in Asia. Our pipe moulds are available mainly in diameter from DN50 to DN2600mm.

Most of the standards covering pipe and fittings manufactured by AMERICAN Cast Iron Pipe Company have been prepared by the American Water Works Association Standards Committee A21. Other applicable standards generally cover specialties or refer to ANSI standards.

Ductile iron pipe is the successor to the tried-and-true gray cast-iron pipe. It has been in use since the year 1455 in Germany and came to the United States in 1817. Over 600 utilities in the United States and Canada have used cast-iron mains for over 100 years.

Concrete pipe cannot compare to Ductile Iron when considering their respective approaches to internal pressure design; and Ductile Iron Pipe is much easier to install and operate than concrete pipe.

Cast iron pipes were used during the construction of homes throughout the last century. It was only until relatively recently, in the 1980s, when builders stopped using cast iron pipes during the construction of homes.

Midt-Norsk Betong has its headquarters in Verdal, close to Trondheim, Norway. For slightly over a year, a brand-new factory has been in operation only a few meters away from the old site. The plant produces precast units for civil engineering and supplies the central part of Norway, i.e. the region around Trondheim. The company management decided to “put all eggs in one basket” and to invest in the growing infrastructural market.

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