Prefabricated plastic steel buried insulation pipe common problems and solutions

Plastic-steel thermal insulation pipes have been widely used in some developed countries as early as many years ago and have received very good energy-saving effects. In recent years, China's heating engineering and technical personnel have promoted the development of domestic pipe network deployment technology to a higher level by digesting and absorbing this advanced technology. Directly-buried insulation pipe is formed by tightly connecting a steel pipe for conveying medium, a high-density polyethylene outer sleeve, and a rigid polyurethane foam insulation layer between the steel pipe and the outer sleeve.

If you use field foaming spray polyurethane, there will often be some problems, such as:

Polyurethane insulation pipe starts slowly. This phenomenon usually occurs during the autumn or winter season or in the morning because of sudden temperature drop or low temperature. Raise the ambient temperature and black material temperature to solve. Generally, the temperature of the black material rises to 30-60°C, and the ambient temperature rises to 20-30°C.

Polyurethane insulation pipe rises quickly This phenomenon generally occurs in the spring and summer or noon construction, because the sudden increase in temperature caused by too much temperature. Black material can be cooled with cold water or outdoor natural cooling at night to avoid direct sunlight.

Polyurethane insulation tube foam strength is relatively small and the bubble is soft. This phenomenon is caused by the black and white material imbalance. Properly increase the proportion of black material (1:1—1.05). Be careful not to make the proportion of black material too large. Otherwise, it will make bubbles change. Brittleness also affects foam performance.

Therefore, we can use the factory preset method when we are doing insulation pipe, and use a high-pressure foaming machine to inject the rigid polyurethane foam plastic liquid into the cavity formed between the outer sheaths at one time. This is not only simple in construction, but also convenient to transport. , More energy-efficient!

OPT Diamond Cutting Tools Co., Ltd carbiade inserts product one of as follow  :Carbide Turning Inserts 

Carbide turning inserts are mainly made of solid carbide as the base and are finished through multiple production processes.

All geomeries of carbdie inserts are available for your choice, it can be supplied immediately from stock or 2-4 weeks lead time can be given. And we also can produce Carbide Inserts according to drawings or samples.

 

Advantage:

Various grade and size are available.
Long use lifetime and stable performance.
Good quality with competitive price.

 

Flexible in order quantity:

Samples can be provided before mass production, and MOQ can be discussed accordingly.

 PRODUCT DETAIL:

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PAYMENT AND DELIVERY:

Carbide Turning Inserts

PRODUCT EQUIPMENT :

+Carbide Turning Inserts

ABOUT US :

We are specialize in manufacturing PCD diamond tools and Carbide tools. Our major product inclulde PCD Inserts , PCD Reamers , PCD End Mills, PCD Taps, Cabide Inserts,Carbide Drills, Carbide Reams, Taps etc., 


We also offered customized cutting tools per drawings, and provide package according to customer requirements. We manufacture a series range of cutting tools for machining of Cast iron, Aluminium alloy and Non-Ferros metal, it is widely used in all major sectors like Automobiles, Engineering, Aerospace, Aviation and 3C industry. Premium quality of raw material is used in the production and strict examination during processing with advanced equipment, so our client are satisfied with our reliable quality and on-time delivery.


Our best selling of cutting tools include PCD Inserts, PCD End Mill , PCD Ball Nose Mill, PCD Reamer , Carbide Taps , Carbide End Mill , Special Form Cutter and many more. For these years we have been made a large forward in the technologies of manufacturing cutting tools. With high quality on performance and price, our product sells well both on domestic and overseas market. And we will always focus on the quality and best service, to make long business relationship.

Carbide Turning Inserts

quanlity control:


We have dedicated team of quality control and precise equipment to keep good and stable performance for our products and processing services.

Carbide Turning Inserts


Carbide Turning Inserts

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OPT Cutting Tools Co., Ltd. , http://www.optdiamondtools.com