It is reported that in 2009 the country's total casting production was 35.3 million tons, ranking the first in the world for 10 years in a row, with an average annual increase rate of 10.9%, covering automobiles, energy, machine tools, pipeline pump valves, aerospace, engineering machinery and other industries; but the industry The problems are not optimistic: small scale enterprises, low industrial concentration, irrational product structure, weak independent innovation capability, backward equipment and processes, and extensive development methods of high investment, high consumption, high pollution, low efficiency, and low profit Still fragile.
Due to the prominent existence of the industry's own common problems, when companies encounter difficulties, the disadvantages of small and medium-sized enterprises begin to appear.
According to reports, nearly 20 foundry companies in the Tongye metallurgical industrial park in the southwestern part of Hebei Province could not normally start their business because of insufficient recruits. Take the Hebei foundry industry as an example. Although there are more than 2,000 companies, the annual output is less than 10,000 tons, accounting for 80%. These casting companies mainly produce production machinery parts, and their equipment technology is low, but the labor demand is large. However, after the general emergence of labor shortage in the society, enterprises can't meet the needs of normal production by recruiting labor, affecting and constraining the business development of enterprises.
The China Foundry Association was entrusted by the Ministry of Industry and Information Technology in Beijing to convene the "Twelfth Five-year Development Plan for China's Foundry Industry". It is proposed that the number of foundry enterprises will be reduced from 30,000 to about 20,000 by 2015 and will be reduced to 10,000 by 2020. Around the same time, at the same time, the energy consumption for casting is greatly reduced, and 30% of the enterprises reach the level of advanced industrialized countries; the wastes and exhaust emissions of the foundry enterprises reach the national or local standards; on the basis of the “Eleventh Five-Year Planâ€, energy saving and emission reduction targets can reach energy Reduce consumption by 10%, reduce pollution by 15%, implement “access conditions for the foundry industry in Chinaâ€, and close enterprises that waste resources, pollute the environment, and do not have safe production conditions, so that the foundry industry can develop in a healthy and orderly manner.
At the same time, due to many outstanding problems in the foundry industry itself, companies with backward production capacity will be phased out, and due to the demand for castings in domestic and foreign markets are inseparable from SMEs, a longer-term elimination process will be required. The overall casting quality will gradually increase, which is a challenge for the downstream valve industry, increasing production costs and improving product quality. In the process of development of the foundry industry, valve companies should pay attention to the impact on the foundry industry in terms of power cuts, emission reductions, shortages of employment, and national policies. At the same time, they should pay more attention to the development of the foundry industry and make appropriate adjustments according to their own operating conditions.
Tubing and casing pup joints are machined according to the latest version of API SPEC 5CT. The steel grade includes J55,K55,N80-1,N80Q,L80-1,P110,etc. There are two types of thread widely used in tubing pup joint namely Non-upset thread(NU), External- upset thread(EU);
Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC).
Our testing and inspection method system is complete, using a whole set of thread instrument to inspect taper, pitch, tooth, height, tooth type,etc. The products have passed the identification of china petroleum pipeline. Quality supervision ,inspection and testing center and gained the unanimous praise from the customers.
Api 5Ct Tubing Pup Joint,Pup Joint Coupling,Perforated Pup Joint,Casing Tubing Pup
Henan Dongfanglong Machine Manufacture Co., Ltd , https://www.dfloilm.com