Hello! Welcome to the official website of Shanghai Hufeng Machinery Co., Ltd.!

TEL：021-69116633   Email：hufengjixie@163.com

HF

Converge industry wisdom to create quality independently

Integrating product research and development, production, sales, service, and undertaking steel connection and welding projects

HF

Service Hotline

021-69116633

HF

NEWS

Production principle of steel bar connection sleeve

Shanghai Hufeng Machinery Co., Ltd. specializes in the production of steel bar joints, steel bar straight thread sleeves, and steel bar connectors. It has complete qualifications, and its tensile strength has reached the national first-class standard. Welcome to consult and negotiate.

28

2020

/

04

Sleeves for mechanical connection of steel bars

This standard specifies the terms and definitions, classification, type and marking, requirements, test methods, inspection rules, signs, packaging, transportation and storage of sleeves for mechanical connection of steel bars.

28

2020

/

04

Industry Standard "Sleeve for Mechanical Connection of Steel Bars"

This standard is compiled in accordance with the rules given in the national standard GB/T 1.1-2009. This standard incorporates the original industry product standard JG 163-2004 "Rolled Straight Threaded Reinforcement Joints" and JG 171-2005 "Upsetting Straight Threaded Reinforced Joints" and the original engineering technology industry standard JGJ 108-96 "Ribbed Rebar Sleeves" Necessary modifications have been made to the sleeve requirements, test methods and inspection rules in the "Technical Regulations for Extrusion Connections" and JGJ 109-96 "Technical Regulations for Reinforced Taper and Thread Joints". In addition to specifying the uniform requirements that all types of sleeves for mechanical connection of steel bars should comply with, this standard also stipulates their own special requirements for straight thread sleeves, tapered thread sleeves and extruded sleeves. This product standard is used in conjunction with the current industry standard JGJ107 "Technical Regulations for Mechanical Connection of Steel Bars". Appendix A, Appendix B and Appendix C of this standard are normative appendices, while Appendix D and Appendix E are informative appendices. This standard is proposed by the Institute of Standards and Quotas of the Ministry of Housing and Urban-Rural Development. This standard is under the jurisdiction of the Building Structure Standardization Technical Committee of the Ministry of Housing and Urban-Rural Development. This standard is drafted by: China Academy of Building Research. Participated in the drafting of this standard: Changzhou Tianzhan Steel Pipe Co., Ltd., China Academy of Building Research Institute of Construction Mechanization, China Metallurgical Construction Research Institute Co., Ltd., Beijing Institute of Construction Engineering, Jianyan Jianshuo (Beijing) Technology Development Co., Ltd. Company, Shanghai Jianyan Rebar Connection Technology Co., Ltd., China Nuclear Industry 24th Construction Co., Ltd., Baoding Huajian Machinery Co., Ltd., Chongqing Erhang Rebar Connection Engineering Co., Ltd., Sino-Ocean International Construction Co., Ltd., Beijing China Construction Technology Union Technology Development Center, Shanghai Hufeng Machinery Co., Ltd., Wuhan Sifangyuan Machinery Equipment Co., Ltd. The main drafters of this standard: Xu Ruirong, Liu Yongyi, Wu Xiaoxing, Gu Wensheng, Liu Zijin, Qian Guanlong, Li Daning, Nan Jianlin, Zhao Hongxue, Wu Guangbin, Li Zhibin, Zhang Weiping, Liu Tianyu, Zhang Yinghuai, Hu Jun, Qu Xingtao, Bai Jianping, Lai Zhiyong, Fang Jun, Zhou Jiankang.

28

2020

/

04

Discussion and Analysis of the List of Top 500 Private Enterprises in China in 2013

The All-China Federation of Industry and Commerce released the list of the top 500 Chinese private enterprises in 2013 in Beijing yesterday. The top ten are Suning Appliance, Lenovo, Huawei, Jiangsu Shagang Group, Shandong Weiqiao Entrepreneurship Group, Zhejiang Geely Holding Group, Dalian Wanda Group, Yurun Holding Group, Vanke ,Midea Group. Compared with last year's top ten, Suning rose from No. 3 to No. 1, Lenovo rose from No. 4 to No. 2, Jiangsu Shagang dropped from No. 1 to No. 4, and Huawei also dropped one place. Xinjiang Guanghui and Sany Group fell out of the top ten, while Vanke and Midea entered the top ten. The entry threshold for the top 500 private enterprises this year is 7.772 billion yuan, an increase of 1.203 billion yuan over last year. In 2012, the total revenue of China's top 500 private enterprises exceeded 10 trillion yuan, with an average of 21.155 billion yuan per household, a growth rate of 13.56%, a decrease of 19.6 percentage points from 33.25% in 2011. From the perspective of revenue distribution, the number of very large enterprises is increasing year by year. In 2012, the number of companies with a total revenue of more than 100 billion yuan increased from 7 in 2011 to 10, of which Suning Appliance ranked first with a revenue of 232.723 billion yuan; companies with a total revenue of 50 billion to 100 billion yuan The number of enterprises decreased from 20 in 2011 to 17, and the number of enterprises with total revenue between 10 billion and 50 billion yuan increased from 284 in 2011 to 350. The All-China Federation of Industry and Commerce stated that while the overall scale is increasing year by year, due to the shrinking international market, the prices of various domestic production factors have risen, and some industries have overcapacity, the profits of private enterprises have continued to decline. In 2012, the total profit of the top 500 private enterprises showed negative growth, and the operating efficiency and profitability declined. According to the data, the after-tax net profit of the top 500 private enterprises in 2012 was 423.844 billion yuan, a slight decrease from 2011, a decrease of 3.39%. Statistics show that in 2012, there were four private enterprises whose after-tax net profit exceeded 10 billion yuan, namely Vanke, Huawei, Wanda, and Baidu. It can be found that among the top 20 companies with after-tax net profit among the top 500 private enterprises, 7 companies including Shandong Weiqiao, Inner Mongolia Yitai, Sany Group, Midea Group, Jiangsu Yangzijiang Shipbuilding Industry, Legend Holdings, and Suning Universal Group In 2012, the current profit level declined. Among them, Sany Group, Suning Universal Group and Jiangsu Yangzijiang Shipbuilding fell by a large margin. In terms of specific operations, in terms of losses, 11 of the top 500 private enterprises suffered losses in 2012, 9 more than in 2011, mainly concentrated in ferrous metal smelting and rolling processing, wholesale and retail, and electrical machinery and equipment manufacturing. In terms of industries, the top ten industries of the top 500 private enterprises in 2012 included 333 enterprises, and 251 enterprises were concentrated in capital and technology-intensive industries such as metallurgy, electrical machinery and equipment manufacturing, real estate, chemical industry, and petroleum industry. . Among them, the iron and steel industry saw a significant decrease, with 55 companies, 10 fewer than in 2011, falling from the first place in the top ten industries to the second place; the number of construction companies increased from 60 in 2011 to 65 in 2012, at the top of the list. The report shows that in recent years, the total tax payment of the top 500 private enterprises has increased year by year, but the increase in the total tax payment in 2012 was small, and the proportion of the national tax revenue decreased slightly. On the other hand, the stimulating effect on employment was further strengthened. In 2012, the total tax payment of the top 500 enterprises reached 433.478 billion yuan, a year-on-year increase of 5.9%, accounting for 4.31% of the national tax revenue. At the same time, in 2012, the number of top 500 employees reached 6.757 million, accounting for 0.88% of the national employed population. By the end of 2012, the number of private enterprises across the country exceeded 10 million, reaching 10.8572 million, a year-on-year increase of 12.2%; the registered capital reached 31.1 trillion yuan, a year-on-year increase of 20.59%; the average wage of employees in urban private units was 28,752 yuan, a year-on-year increase 17.1%. Our company Shanghai Hufeng Machinery Co., Ltd. has been cooperating with Wanda Group, Yurun Holding Group, China Coal, China Railway, and China Construction in recent years. It has been praised by everyone and listed as a long-term partner.

28

2020

/

04

Analysis of China's construction machinery market in 2013

Analysis of China's construction machinery market in 2013

In recent years, the rapid development of China's economy and infrastructure construction has driven the full-speed growth of China's hoisting construction field. Especially in nuclear power, petroleum and petrochemical, steel bar connection and other fields, with its leading equipment and advanced technology, steel bar joint production enterprises not only lead the development of China's steel bar connection technology construction field, but also become a new benchmark in the global construction field. Since 2012, the world and China's economic trends still show some uncertainties. Under unprecedented challenges, the global and Chinese steel bar industries need to realize upgrading and transformation faster and more thoroughly. China has entered a very sensitive period, and 2012 is a year of transformation in the Chinese market. As for when the entire market will turn warmer, the market will definitely rebound in 2013. In any case, the current global economy is in a very sensitive period, and the world is looking forward to economic recovery. The "golden decade" of the construction machinery industry may not appear again in the short term, but in the long run, the future will undoubtedly be positive of. 2012 is a critical year for China to achieve transformation. China is already at the crossroads of development, and China has also become the focus of the world. Some time ago, the National Development and Reform Commission approved a trillion-yuan infrastructure investment project within two days, igniting local investment enthusiasm. Some new investment plans, especially in western China, still have unlimited potential. By 2013 at the latest, China’s construction machinery market will recover.

28

2020

/

04

Special tapping machine for steel sleeve

Special tapping machine for steel sleeve

35. HRB400 steel bar straight thread sleeve connection can also be used for tapping of standard or non-standard nuts in the hand machinery industry. It has the advantages of simple operation, convenient construction, fast processing speed, no pollution, and energy saving. The quality of the sleeve can reach the standard of Class I in JG107-2003 "General Technical Regulations for Mechanical Connection of Steel Bars". It is the most widely used and popular sleeve tapping machine in the construction and engineering fields. The performance of special tapping machine for sleeve: DGS-40 special tapping machine for sleeve can make the threaded sleeve tap one-time forming, its thread precision is better than the 6H precision requirement specified in JG163-2004, and can realize The diameter and length of a tapping molding. This machine adopts an external cutting fluid device, which has better cooling and lubricating effects. When processing a sleeve of one specification, it can continuously process a large number of threaded sleeves of the same specification only by changing the tap shank. The operating procedure is greatly simplified and improved. production efficiency. This machine can process positive and negative threads and variable diameter threads according to the technical needs of the construction site and other requirements. DGS-40 sleeve special tapping machine structure: consists of cycloid reducer, transmission mechanism, shaft lifting mechanism, gearbox, special material clamping device, material receiving and releasing device, cooling system, electrical control box, control system, etc. Partial composition. It is an ideal processing machine for processing steel pipes with positive and negative thread pitch and deep hole thread products. Such as steel pipe joints, steel casing joints. All can be processed and produced by this machine tool, and high-efficiency and high-quality products can be obtained. Machine Features: 1. The feed pitch of this machine tool depends on the self-weight feed of the feed spindle to adapt to various thread processing. 2. When the machine tool is processing the product, the tap is fed at its own pitch to ensure the dimensional error of the pitch. The smooth transmission of the spindle ensures the roughness of the machined surface. After the tap passes through the workpiece, it automatically falls, The non-reversing of the spindle can ensure that the chips will not damage the smoothness of the machined surface. 3. Using this machine tool to process steel pipe thread products can increase the output by 2-3 times compared with other machine tools, and can replace the processing efficiency of vertical drills. Since 2 stations run at the same time, It can replace the processing efficiency of 2 vertical drills and save 1 operator. 4. This machine tool has the characteristics of small size, convenient installation, simple operation, stable transmission and easy maintenance. 5. The tapping spindle of the machine tool can be raised and lowered arbitrarily during operation, so it can avoid damage to the tool due to operation or failure and reduce waste products. The main parameters: Main power supply: 3-phase AC 380V Control voltage: AC 36V Pump power supply: 3-phase AC 380V pump motor 60W Main motor power: 4KW speed 1440r/min Processing speed: rate 220r/min 265r/min Processing sleeve specifications: φ14-φ40mm The effective length of the internal thread of the processing sleeve is greater than 100mm Dimensions: 1200×1000×2500mm Gross weight: 780KG Precautions: 1. The cooling liquid must be water-soluble cooling liquid. It is strictly forbidden to use oily cooling liquid, let alone oil instead. 2. It is strictly forbidden to process sleeve threads without coolant. 3. The ends of the steel pipes to be processed should be flat and must be cut with a sawing machine. 4. The feed should be uniform during the initial cutting, and do not advance rapidly to prevent the tooth shape of the tap from cracking. 5. The lifting mechanism of the rotating shaft should be cleaned and oiled regularly, and whether the machine is safe should be tested before starting each shift. 6. Iron filings should be cleaned up in time. 7. The cooling liquid tank should be cleaned every half month. 8. The reducer should be refueled regularly to maintain the specified oil level. 9. The special tapping machine tool for sleeve should be maintained regularly. 10. The chassis must be connected to zero or ground reliably.

28

2020

/

04

< 12 >