Yangzhou Chengde (YC)
is one of the best pipe manufacturers in the world, and the production diameter
from 8" to 48" in OD and wall thickness from 9.53 mm up to 140mm. We can produce the A/SA53 steel pipes according to the ASME SA53 and ASTM A53 standards.
Yangzhou Chengde founded in 1988, always insist on innovating
and creating excellence. At present, the total assets is 6 billion RMB, the
number of staff is 3000 and cover an area of 2080 acres of the Chengde group.
Chengde group is the first echelon in
national brand on seamless Steel Pipe and including 4 sections: Jiangsu Chengde
incorporated company, Yangzhou Chengde Steel Pipe Co., ltd, Yangzhou Chengde
Heavy Industry Co., ltd and Taizhou Chengde Steel Pipe Co., ltd.
Chengde have been working on the research.manufacture and sale of seamless pipe about 30 years, and the advantage of core competence is more prominent by integrate in technical.management and market with PCC.
1 The Piercing and rolling technology of Chengde possesses a number of patents in designing and manufacturing the equipment. The production is efficient and flexible, and the quality is stable.
2 The material grade is complete, and the size range is wide (three produce line can manufacture all non-standard sizes). The Minimum Order Quantity (MOQ) as low as ONE piece, and the date of delivery is short with excellent cost performance.
3 The sales and service team is professional and localize.
Astm A53 Pipe,Sa53 B Pipe,Astm A53 Carbon Steel Pipe,Astm A53 Carbon Steel Tube YANGZHOU CHENGDE STEEL PIPE CO.,LTD , https://www.chengdepipe.com
Why do plastic bags vary in length when making bag mechanism bags?
In the process of bag making, the plastic bag making machine sometimes has different lengths of finished plastic bags, so that the products produced are unqualified, so what is the cause of this phenomenon? Today, China Plastics Industry website - Jiuzhi Plastics Network takes everyone to see what causes this phenomenon, as follows:
1. There is a lot of dust on the photoelectric head of the plastic bag making machine. When the dust on the photoelectric controller is too much, it will affect the luminosity and intensity of the laser, so that the length of the plastic bag cannot be accurately controlled.
2, the problem of photoelectric head equipment of plastic bag making machine. Because some manufacturers' bag making machine quality can not be guaranteed, the use of inferior photoelectric head accessories, resulting in substandard sensitivity, the solution is to replace the photoelectric head.
3. The speed of the plastic bag making machine is too high. Make some accessories can't be more rhythm, you should reduce the speed to test.
4, the longitudinal sealing knife hot cloth roll is too tight. Increased feed pressure.
5. The feeding and pressing devices of the plastic bag making machine are not synchronized. Feeding too fast, too slow or too tight, and the pressing device is too loose, this phenomenon is prone to the length of the plastic bag.
6, the bag making machine tracking power is not obvious. The quality of the tracking accessories is not good, or it is used for too long, the actual effect is not obvious, and the functions that should be performed should not be performed well.
The above is the reason why the length of the product is different when the plastic bag mechanism bag is used. I hope that these will be helpful to those who do not know the reason.