High Pressure Hydraulic Cylinder for Coal Mining
The cylinder of power support is the part which joins the beam and base,bearing the load of crown plate.
Hydraulically powered roof support are neccessary equipment for underground longwall mining.
WANTONG HYDRAULIC produces longwall hydraulic cylinder kits including one stage or multi-stage, single-acting or double-acting props used for hydraulically powered roof support. The main features are robust design, working pressure 32MPa and testing pressure 48MPa, mixture of water and oil as working fluid. It is possible to deliver hydraulic props with shock-valves for mine workings with seismic bumps.
It can be designed and made according to customer's requirement.Technical specification description:
Company Introduction:Shandong wantong hydraulic co., ltd. sets up in 1995, is a specialized hydraulic cylinder manufacturing enterpirise which takes up with design, manufacturer, sell hydraulic products. The company covers an area of 180,000 square meters, with 500 emplayees in it. There are 700 sets of manufacturing equipments, such as cold drawing production lines, surface treatment production line, boring and rolling production line, various of digital-control machining and testing equipment.
|Single Telescopic Column of Hydraulic Support|
|Cylinder Diameter||Working Resistance||Opening pressure |
of safety valve(Mpa)
|Column Sedimentation force||Spherical radius |
of column head
|Spherical radius |
of cylinder head
|Diameter of connection |
bore of column head
Complete Manufaturing ProcessesSafety CertificatesWe also have gained the certificate of approval for mining products from national safety authorities.
The Company has complete and total manufacturing processes from raw material entering to factory and up to the final finished products to customer, which all are done under same premises. Therefore we can control the quality and delivery time at our best.
Q1: Are you a manufacture or a trade company?
Answer: Manufacture, we are the leader manufacturer of hydraulic industry in China with 20 years' experience and technology accumulation. With strong technical team we could solve any annoyance of you.
Q2: Do you have quality control system?
Answer: Yes, The quality management system introduced is: ISO/TS 16949:2009-certified by NQA and IATF cert.
Q3: How can i get a booklet and buy a cylinder from you?
Answer: Very easy! Just leave me a message or email or call me directly, let me know you are interesting in our products. I will talk with you for the details soon!
Q4: Can you tell me the price for the cylinder?
1. Please advice the drawing with technical requirement.
2. Please advice the model No. after you check our booklet.
3. Please advice the tipping capacity, number of stages, closed length, mounting type and size.
4. Please also help advice the quantities, this is very important.
Q5: Do your products come with a warranty?
Answer: Yes, we have one year warranty. In this year, if the quality problem we will free repair for you.
Q6: Hydraulic cylinder internal leakage?
A: 3 main reasons causing internal leakage: Overload, polishing bad controlled, cheap seal kits. As is known to all, vehicles in China are often overloaded, our products all designed to bear the overload power. Advanced equipment could assure the polish processing. And we use the imported/TOP brand seals to meet customers' requirement.
Q7: What about the quality feedback of your products?
A: WE HAVE NEVER RECEIVED EVEN ONCE QUALITY COMPLAINT FOR MANY YEARS OF INTERNATIONAL BUSINESS.
Q8: Can you help me to install or recommend what kind of hydraulic cylinder or power pack should I use for specific machine?
Answer: Yes, we have 25 experienced engineers who are always ready to help you. If you do not know what kind of hydraulic cylinders should be used in your machine, please just contact us, our engineers will design the exact products match your need.
Q9: What is the delivery time?
Answer: Within 15 days for samples.
15-30 days for bulk production, which is depend on quality, production process and so on.