1、Application:
It is used for hole sealing when and after grounting and water injection of coal or rock.
2、Structure:
The hole sealing device is composed of high-pressure expansion hose, relief valve, quick connector and skeleton steel pipe.
3、Technical parameters:
Working pressure: 5-8Mpa
Sealing diameter: 45mm-120mm
Application: it can be used to convey mixed resin, water, cement and other medium.
We can design and process hole sealing devices according to the actual hole sealing diameter required by users.
4、Usage:
1 The hole sealing device is easy to use. Fully insert the device into the borehole and connect it with pressure source, then start the pressure. When the presure is raised up to 0.4MPa, the hose will be completely expanded and seal the hole. Now open the relief valve to inject water or grounting to the coal. After water in jection or grounting, you just need to back-out the connecting pipe to the hole sealing device counter clockwise. The hole sealing device will be still expanded in the borehole to ensure long-term sealing. It can effectively
2 Hole sealing device contraction: when the pressure medium is water, water suction pump is required. The compressed gas can be discharged from the supply pipe.

Hebei Lianxing Plastic Co., Ltd. is a professional production of high pressure hose, metal hose and other products manufacturers. Company has strong technical strength, advanced technology and equipment, complete detection means, product quality and reliable.
Our mainly produces the products are: high pressure steel wire woven hose, high pressure steel wire wound hose, hydraulic hose, hydraulic support of coal mine hose assembly, expansion (water injection hole sealing device) hose, steel wire winding drilling rubber tube, hose connectors, wear-resistant sand blast hose, cloth inserted hose, high temperature steam hose, water hose, large diameter hose, metal hose and hose assembly. The conveyor belt, rubber plate, ball type valve, three links, straight, coal machine fittings and various rubber goods.

• High quality, this is the soul of our company to exsite.
• Do more and fast for customer, this is our method.
• Only when customer win, we win, this is our idea.
• We offer sample free of charge.
• 24hours quick response when there is emergency.
• Quality guarantee, never be afraid of quality problem, we take response from the beginning to the end.
• Product sample is available
• OEM is welcome

Q: Can you produce customized goods ?   

A: Yes, the size, diameter and length can be produced as per client's requirements.   

Q: Can you print words on products as per client's requirement?  

A: Yes, make label according to your exact requirement.   

Q: Can you do business via Ali Online Transaction?     

A: Yes, we can make the deal through AOT.  

Q: What is your payment terms?  

A: T/T, L/C at sight or Paypal.  

Q: Do you accept OEM?   

A: Yes, OEM or ODM are both OK.   

Q: Where is your nearest loading port ?   

A: Tianjin Xingang, China.    

Q: How can you guarantee the quality or any warranty?  

A: If any quality problems during use, all the products can be returned  
    or according to consumer's requests.