ST52 ASTM A519 1020 precision steel pipe

Description Details	ST52 ASTM A519 1020 precision steel pipe
Out Diameter	18mm-121mm(1/2'' -  16'')
Thickness	2mm-18mm(Sch40-XXS)
Length	5-12m
Standard	GB/T3639, GB8162,GB8163,ASTM A519,A106 ,A179 A53,EN10305-1,EN10305-4,DIN2391,DIN17175
Grade	10#,20#,35#,45#,20cr,40Cr,20CrMo,16mn,ST35, ST37,ST37.4,ST45,ST52 and etc.
Technical	Cold rolled
Certificate	ISO 9001:2008
Packing	Export standard seaworthy packing or as per buyer’s request
Shipment	20feet container load 20tons pipe whose length is under 5.8m 40feet container load 20tons pipe whose length is under 11.8m
Terms of payment	T/T or L/C at sight
Delivery time	Within 20days after receipt T/T payment or L/C
Uses	used for physical construction, hydraulic installation, auto parts,sleeves,and etc

 

 

Process method	Straightness	Tolerance	Inner hole roughness
Cold rolled	0.3-1.0	-/+0.03-0.1mm	Ra0.4-Ra1.6
Cold drawn	0.3-1.0	-/+0.03-0.1mm	Ra0.8-Ra1.6

 

ST52 A519 precision pipe

 

Fifth, this technology application prospects a) macro-economic construction market Steel is one of the important raw materials, known as industrial "vascular" said. Precision steel widely used as mechanical industrial pipe (mainly hydraulic and pneumatic cylinder tube, hydraulic oil pipelines, automotive transmission tube and axle casing, bearing steel, belt conveyor roller tubes, printing and dyeing roller tube, etc.), oil Geological industrial pipe (pump tube, drill pipe, tubing, casing, drill pipe, etc.), chemical pipe (oil cracking pipe, fertilizer with high-pressure pipes, chemical equipment and pipeline tube), boiler and heat exchanger tubes . With the continuous development of China's economic construction and the technology continues to progress, precision steel will continue to expand the scope of application, demand is also growing. According to internal data, produced by the German Mannesmann cold drawn precision tubes in their domestic price of 40,000 yuan / ton, and therefore solve billet tube material, specifications, quality case, pioneering precision steel the international market, export The potential is great. From the raw materials market, China has basically formed Northeast Anshan, Baotou Northwest, North China, Tianjin, east Shanghai, Chengdu, southwest and south-central Hengyang six seamless steel pipe production base. Longitudinal crew of nearly 1600 units, 1986 since the introduction of more than 200 sets, φ219mm more than 18 large and medium-diameter welded pipe unit sets, including Guangdong Panyu pipe factory φ320 unit, Zhangjiakou Ning steel φ114 crew Xuzhou halo in the company φ219 units, Baoji Steel Pipe Plant φ426 units, Jinxi Steel Plant of φ508 units, etc., can produce oil well pipes, ducts, mechanical tube high-end products will be produced reliably DOM mechanical tube pipe billet supplier. At present, China has not yet specialized precision steel manufacturing plant, we can learn from some of the international steel companies plant model and experience. Japan is a major exporter of steel, and its quality steel in the world. Japan's six major steel companies have four (Nippon Steel, Sumitomo Metal Industries, Japan Steel (NKK) and Kawasaki Steel) are producing steel. Nippon Maru a steel company is a relatively large, but not confession raw steel company, with an annual output 1,188,000 t steel pipe, galvanized pipe products, Pipes, mechanical tube, standard gas pipes and so on. Osaka Harada annual output 12,000 t steel hydraulic cylinder and other precision steel tubes, cold drawn major means of production is. Headquartered in Osaka Katakura steel company built the world's largest 700 tons drawing machine, in Osaka, Hiroshima and Tokyo are built with precision steel production plant, with an annual 49,200 t precision steel tubes.

 

 

2) industry needs (1) engineering hydraulic machinery: such as hydraulic truck crane, excavators, bulldozers, forklifts, etc.. (2) coal mine hydraulic support: current national production downhole hydraulic support enterprises have 48, high-precision drawing a total demand of about 1.2 million meters. (3) hydroelectric gate hoist, template machines, especially the Yangtze River Three Gorges Project is great demand in the next decade. (4) Construction machinery: aerial lift machinery, general building renovation is also inseparable from the construction of hydraulic machinery.

 

 

(5) Petroleum Geology tube: oil fields across the country each year to pump 30,000 units or more, the annual consumption of more than precision tubes 20-40 meters, but can also use this technology finishing all kinds of drill pipe. (6) weapons industry: military-industrial sector processing methods now used guns tube spinning, spinning method in low productivity and high cost of production with the drawing method is more appropriate. (7) bearing industry: the production of the current Rolling seat to round as raw material, is made by stamping after slicing. Large bearing race will also hollowed out to create a solid bar stock, metal utilization rate of less than 40%, an urgent need for high-precision, bearing steel thick-walled pipe. (8) automotive: 95 years shaft with precision tube 6000 tons, 10,000 tons and a variety of axle casing pipelines and so on.

 

(9) Aviation Industry: Aluminum landing gear and thick-walled steel pipe and so on. (10) jack Industry: Manufacturing has considerable strength of the jack, exports promising. All manufacturers currently use more solid bar jack cylinder material processing, production efficiency is low, material waste is high, urgent demand for high-precision drawing. (11) other areas: a variety of printing rollers, roller roller tube, stainless steel, aluminum, brass, Pipes and external composite pipe, etc. can be produced using this technology. Fifth, economic analysis 1), a successful example of high-precision cold drawn precision steel production technology in the late eighties was in the country to promote the application, using the technology of multi-enterprises have achieved good results. Some township enterprises in Jiangsu Wuxi example, in 1992 the company adopted the technology, investment 6.5 million yuan to establish a high-precision cold drawn steel pipe factory, employees 60 people (mostly peasant contract workers), the end of 1999 has obtained tax profit of 24 million yuan in fixed assets reached 13 million yuan. 2), domestic prices of raw materials and finished seamless steel pipe price in 4200 ~ 5200 yuan / ton, welded pipe prices in 2900 ~ 3600 yuan / ton. High-precision drawing main products: hydraulic, pneumatic cylinder tube, DOM tube, cars, tractors, motorcycles with a small-caliber precision steel, coal mine prop tube, petroleum geology pipe, according to the varieties and specifications; price in 9000 ~ 1300 yuan / tons.

 

 

3), return on investment analysis for the construction of two units pulling machines, production program of 4000 tons cold drawn precision tube production line capacity estimates, the project total investment of about 10 million yuan U.S. dollars. The construction of a pulling machine, the production program of 2,000 tons cold drawn precision tube production line capacity estimates, the project total investment of about U.S. $ 8.5 million yuan. Press the blank pipe 5000 yuan / ton, the average price of finished pipe at 9500 yuan / ton. By program (a) Construction of two pulling machine, put into operation 4000 tons cold drawn precision tubes, sales income 38 million yuan, profit of 6.4 million yuan (conservatively by one ton 1600 yuan profit calculations). Payback period of 2.5 years (calculated from the investment year). By program (2) to build a pulling machine, put into operation 2000 tons of cold drawn precision tubes, sales income of 19 million yuan, profit of 3.2 million yuan, the payback period is 3 years (calculated from the investment year). 4), the scale of production, personnel and plant (300 t for the construction of a drawing machine production line, for example) A, production program with a high-precision drawing sets 300 tons production line put into operation, process stability, complete specifications, annual finished pipe Φ63 ~ Φ300mm, up to 12 meters precision tubing 2000 tons, about 50,000 meters.

 

 

B, composed of high-precision equipment hydraulic drawing machine, annealing equipment, chemical processing equipment blank tubes, straightening equipment, tooling and processing equipment, test equipment, lifting and transport equipment, electric power systems. Equipment investment is about: 750 million. Of which 300 tons high-precision drawing machine Cost: 3.45 million yuan, the device is fully hydraulic drive, PLC automatic control to achieve installed capacity of 270KW. Annealing furnace: 65 million. Honing Machine: 48 million. C, the production staff of 39 personnel, technology staff five people, three managers, sales personnel 7, auxiliary staff of six, totaling 60 D, plant area 2052M2 (18 × 114M2) production workshop; workshop one end of the building 324M2 (6 × 18 × 3) attached to housing as an integrated office. Also re-establishing 500M2 rough material storage shed.

 

 

Cooperation mode 1, technology transfer and contract service fees are generally 55 to 75 million. 2, turnkey projects (design and manufacture of high-precision hydraulic drawing machine, auxiliary equipment selection) costs 650 to 750 yuan. Cooperation after the commencement of the contract, 8-10 months to complete factory planning, process design, equipment manufacture and plant construction. Months to complete equipment installation and commissioning. Cooperation: seven, awards granted in 1995 the Ministry of Metallurgical Science and Technology Progress Award (third class). 1996 by Beijing Science and Technology Progress Award (second class). 1997 included in the national "Eighth Five" compilation of scientific and technological achievements.

 

ST52 ASTM A519 1020 precision steel pipe，