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Cangzhou steel pipe＆fittings industry originated from the 1970s and it has been an important industry in the world with a large scale over the recent 30 years. This industry mainly covers Yanshan County, Mengcun County, Qingxian County, Cangxian County and Cangzhou urban area. Within 1000 sq.km., there are 2540 steel pipe ＆fittings enterprises both along the national roads and in the four industrial parks. In 2008, the output of Cangzhou steel pipe & fittings products is about 11 million tons among which steel pipe products are 6.5 million tons and 4.5 million tons are fittings products. Cangzhou steel pipe＆fittings industry is the only pipe industry center in China with the largest scale, the most centralized and the most complete product-sets. In Cangzhou, the consumers can buy all types of pipe-products with varied specifications and materials which can improve the purchase quality greatly.
In Cangzhou, the steel pipe products are divided into 5 types according to their applications:
1. Special-purpose petroleum pipes and drill pipes
2.Transporation piping of oil, gas and water
3.Pipelines of chemical engineering, electrical power( including nuclear power), shipping, pressure vessels, etc.
4 .Pipelines of steel structure and manufacture of mechanical equipments.
5.Pipelines of wind power towers.
The above five types include over 200 varieties, such as petroleum pipes, drill pipes, pipe internal and external coating, longitudinal-seam welded steel pipes , seamless steel pipes and spiral welded steel pipe of varied wall thicknesses, varied diameter ( their materials are carbon steel, stainless steel and alloy steel)
Pipe-fittings of Cangzhou: Cangzhou has the ability to produce over 1000 types of pipe-fittings to go with the above steel pipe products.
The main typical products:
1. Spiral seam submerged arc welded steel pipe(SSAW)：Φ219-3420 wall thickness 5-32mm，including X70 steel gradeФ1016×14.7mm ,X 80steel grade Φ1016×15.3mm.
2. ERW Steel Pipe ,longitudinal-seam submerged arc welded steel pipe：scope of specifications Ф159-4000wall thickness 6-56mm，including X70steel grade Ф1016×17.5mm, X 80steel grade Φ1016×18.4mm, X100steel grade Ф813×14.3mm, X120 steel grade Ф914×16mm Longitudinal-seam submerged arc welded steel pipe. X80steel grsde1219㎜×25.7㎜ and 1219㎜×32㎜wall thickness induction bends.
3.Petroleum casing pipes, drill pipes：Specifications of petroleum casing pipe Φ139－Φ339.7mm（51/2″～133/8″）.Steel grade is Group 1, Group 2 and Group 3.
4.Seamless steel pipe：scope of specifications Φ89-630 wall thickness 4-35mm
5.Varied high/low pressure fittings and valve: Pipe-fitting products include series of elbow, series of bend, series of tee, series of cross, series of reducer, series of cap, series of flange, series of socket welding fittings,series of valve.
Materials are:： carbon steel, stainless steel, alloy steel.
6 .Wind power towers of 1500KW or above it
Cangzhou steel pipe industry possesses advanced production equipments and complete test measure equipments. Most enterprises are qualified the certification by ISO. The product execution standards are API Spec 5L、API Spec 5CT、API Spec 5B，EN10217，GB/T9711.1，GB/T9711.2.
Not only are Cangzhou steel pipe＆fittings products applied greatly to domestic large construction projects like From West to East, domestic large power stations, petrochemical engineering, water supply and drainage, pressure vessels, mechanical manufacturing, but also are exported to over 50 foreign countries.
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