"I think if this is true, heavy-duty trucks will at least have leaders who will step down. But I doubt they dare to accept the review. The reexamination will surely be revealed. Chongqi's fake country III has been going back several times, However, there is no way for the country to be partial. The consistency of ERG engines is relatively poor, and mass production will have many quality problems. Most of them do not meet the environmental protection standards.†In recent days, the relevant person of Shaanxi Automobile Sales Company said that he was facing the “truth door†incident in China’s heavy-duty trucks. .
Following the "smoky door" after heavy truck re-emission "fake door"
Recently, some media reported that Yang Wenkai, a Sichuan resident, purchased a Sinotruk Haoyun trailer in 2008. However, he could not enter the home due to a discrepancy between the certificate and the frame number. Some Sinotruk trucks that were purchased by customers last year were frequently traffic police when they were on the road, and were told that they were "National II" cars that were not allowed to be on the market as early as 2008.
As soon as this article was published, it caused a great uproar. On May 10th, China National Heavy Duty Truck (000951) issued a solemn statement denying the use of "State II" standard as "State III". The production and operation of the company’s products are strictly enforced by the state’s laws and regulations regarding heavy-duty vehicles. Product quality and emission standards have undergone rigorous testing and are in compliance with the standards stipulated by relevant laws and regulations. The individual media's publication of false information is entirely the result of unfair competition by individual competitors and malicious slander against China National Heavy Duty Truck.
In fact, starting from the implementation of the National III standard, the issue of China National Heavy Duty Truck's emissions is in trouble. As early as November 22, 2008, heavy truck country III emission standards were implemented for less than five months. The CCTV "Today's Statement" column exposed unannounced visits to China National Heavy Duty Trucks' false country III. According to reports, China National Heavy Duty Truck dealer Nanjing Nanhui Automotive Trading Co., Ltd. has passed the falsification of the engine model, forged the certificate of conformity, replaced the new engine with the old one, and used the national II engine as the national III engine, The appearance was transformed into a new car and the use of gray means to assist consumers in the form of licensing for profiteering.
True or false country III authenticity technology?
From July 1, 2008 until now, it has been nearly 2 years since the full implementation of the National III emission standards. On July 1, 2008, China implemented the national three emission regulations for trucks over 3.5 tons, and on July 1, 2009, 3.5 tons of downloaded trucks also implemented the national three emission regulations. At this point, all commercial vehicles have implemented the National III emission regulations.
In the upgrading of the National III model, it is not uncommon for the light-card area to use tricks and other means to steal the country and turn off the country III. However, the heavy-duty truck industry has a relatively good market order and has not heard of similar incidents of other companies. Why is China's heavy-duty truck unique? State III engine repeatedly criticized?
Things have to be traced back to the two technological lines of EGR and high pressure common rail. In the upsurge of mid-2008 heavy-duty switchover of State III, China National Heavy Duty Truck Group Co., Ltd. chose to increase the cost of common rails with a cost increase of 20,000 to 30,000 yuan. In-line pump plus cooling EGR technology (hereinafter referred to as EGR) almost all other heavy truck companies have played a hand. With the advantage of price and time, China National Heavy Duty Truck EGR almost monopolized most of the heavy truck market in the second half of 2008.
In the face of the cruel reality of the market, major heavy truck companies are forced to switch to EGR. Even today, many companies are angry about this and are scrambling for EGR technology.
It has been controversial whether the EGR technology can meet the national conditions and whether it can really achieve the effect of energy conservation and emission reduction. An expert who declined to be named told Sina Automotive that the principle of an EGR engine is to introduce a small part of exhaust gas into the cylinder for secondary combustion to reduce emissions. This requires only a simple adjustment of the State II engine, and the cost is relatively low. The high pressure common rail technology that can accurately control the fuel system is not a concept at all. And EGR valve in the long-term high-temperature exhaust gas under the dip, it is easy to cause leakage due to corrosion, there will be often said that the phenomenon of black smoke, the vehicle is difficult to meet emission standards after a period of time, this is China heavy truck EGR was Reprimanded as one of the main reasons for "false country III".
However, China National Heavy Duty Truck Co., Ltd. broke the monopoly of foreign-funded high-pressure common rail technology, and the independently researched and developed EGR engine was highly praised by the Chinese Automobile Engineering Society and other relevant departments. On April 24 of this year, China National Heavy Duty Truck Group's "WD615 State III (EGR) Series Diesel Engine" also won the 2009 China Automotive Industry Science and Technology Award.
Is State IV still fake?
According to the national pollutant discharge standards, the type approval of the original light vehicles and heavy vehicles will be implemented from July 1, 2010 and January 1, 2010 respectively. It is reported that due to inadequate preparation in various fields, the Ministry of Environmental Protection has pushed this plan into 2011.
In any case, the final examination of the National IV emission standards will finally come. Is China's heavy-duty truck company ready to welcome China IV? In-line pump plus EGR can easily upgrade the country IV again? Can the falsification of emissions from the State II to the State III end in the era of the State IV?
The industry generally believes that in-line pump plus EGR is only a transitional technology for emission standards. In China, the in-line pump plus EGR is more of a last resort choice than a monopoly of high-pressure common rail technology by multinational corporations. It is not the ultimate solution. "The inline pump can only reach the national III standard. In the national IV and national V phase, the in-line pump engine will be difficult to meet the requirements." Some experts said with concern.
Member of the China Automobile Industry Advisory Committee, Chen Guangzu, told Sina Automotive that the upgrade from State III to the National IV emission standard is a major challenge, and a series of technical issues such as engine systems and exhaust gas aftertreatment systems must be resolved. “Now people are very concerned that EGR can't meet the National IV standard. I think that as long as we can meet the emission standards, what technology line will do it. But companies must be responsible and can not be falsified, but also in the pursuit of technological progress To develop products, such a technical route is feasible."
“The automotive industry cannot be falsified like Sanlu milk powder. The development and application of new technologies require a fair environment. The brand needs everyone to maintain and protect. It must take into account the interests of users and not allow users to be affected. Our national IV product mix Chai and Cummins high-pressure common-rail engines have already been put on the market in batches, and China V products have entered a mature stage,†said a person from the marketing department of Shaanxi Automobile Sales Co., Ltd., who told Sina Automotive.
In addition to the debate on the merits and demerits of the technical route, the fraud of emissions is also related to many aspects. A Hualing heavy-card dealer in Beijing told Sina Automotive that most of the heavy-duty users are for operations and they are not very concerned about environmental protection and emissions. They are certainly reluctant to pay for the state's required emission upgrades. In order to cater to the psychology of this part of the user, some dealers will use decks to attract customers. Emissions will be upgraded to China IV. If the cost increases, it is estimated that there will be counterfeit market demand. In addition, the environmental protection department and some local vehicle management agencies must strictly supervise the phenomenon of decking and must not let anyone take advantage of the loopholes.
TEE
Size
1/2"-72" DN15-DN2000
Wall thickness
SCH5-SCH160XXS
Standard
ISO,SNSI,JIS,DIN,ASME,Sh3408 SH3409 HG/T21635 HG/T05010
Material
Carbon Steel like A234 WPB, 20G, A105, Q235A/B and alloy steel like ASTM A234 WP5, WP11, WP12
Executive Standard
ASME B 16.9, DIN, JIS, BS, etc
Type
Seamless
Welding Method
Butt Welding
Surface Treatment
grit blasting, black or transparent painting or according to the requirement of client
Stainless Steel Tees, Carbon Steel Tee, Galvanized Steel Tee, Steel Pipe Tee
Cangzhou Weiheng Pipe Industry Co.,Ltd , http://www.czweiheng.com