Coal Mining Equipment Telescopic Column of Roof Support for Coal Mining

• Customization: Available
• Certification: ISO9001, ISO16949
• Pressure: 31.5-42MPa
• Model NO.: 210/160/190/140*1590
• Work Temperature: -30~+80 Degree Centigrade
• Acting Way: Double Acting
• Structure: Piston Type
• Material: 27simn, 40cr, 30crmnsi
• Warranty: 14months
• Work Pressure: 31.5-42MPa
• Estimated Time: 20 Days
• Color: as Customer′s Requirement
• Transport Package: Pallet, Wooden Case or as Customer′s Requirement
• Specification: Weight: 500kg
• Trademark: WTJX
• Origin: Shandong, China
• HS Code: 8412210090
• Production Capacity: 300, 000 Sets / Year

Product Description

Product Description

Hydraulic cylinders for hydraulic supports produced by Wantong Hydraulic include single telescopic props and double telescopic props, which are of high quality, special processing technology, high wear resistance and corrosion resistance, excellent working performance, meeting the requirements of extremely harsh environment, long service life and low maintenance cost. The cylinders have passed the complete coal safety certification and officially recognized by the industry.

Wantong Hydraulic has been committed to serving domestic large-scale coal mining equipment manufacturers, major mining companies, coal machinery equipment maintenance manufacturers, maintaining a good long-term strategic cooperative relationship. The products have been exported to the United States, Australia, Russia, Africa and other regions, and have won wide market acclaim after years of market validation.

 

Product Model

Single Telescopic Column of Hydraulic Support

ITEM	Cylinder Specification	Bore (mm)	Rod (mm)	stroke(mm)	Closed Size (mm)	Rated Working Pressure (mm)
1	160/150	160	150	720	1100	39.8
2	180/160	180	160	1050	1397	31.5
3	200/185	200	185	790	1290	35
4	200/170	200	170	537	1068	≤42
5	230*220	230	220	1805	2185	31.5
6	230*220	230	220	595	1066	31.5
7	230/210	230	210	1200	1590	39.7
8	250/235	250	235	1285	1705	40.8
9	280/260	280	260	1300	1710	≤42
10	320*295	320	295	1300	2060	37.3
11	320/295	320	295	1145	2006	37.3
12	320*295	320	295	1278	1690	40.4
13	360/340	360	340	1395	1870	36.86

 

Our products are designed with the following advantages:

1.There are many product models, which can meet the needs of most customers;
2.We have a professional design team, they are one of the driving forces for our development;
3.Our design team can customize products according to the needs of customers to meet the needs of different customers.

About Us

Shandong Wantong Hydraulic Co., Ltd is one of the biggest hydraulic cylinder manufacturer in China, specialized in design, R & D and manufacturing of hydraulicmachinery products etc, with its annual production capaciy of 200000 sets.My company with 600 employees in it ,covers an area of 180000 square meters.There are 700 sets of mnufacturing equipment. Our company invested 10 million RMB in two cold drawing lines, one is 200 tons and the other is 320 tons with acid cleaning, phosphatization, heat treatment and alignment cutting.

All production steps are finished in the same factory, and this guarantees good quality and short lead time. All the products are ISO/TS16949, CCRI, CCS, and DNV and ABS certified. We passed ISO/TS16949 International Quality System Certification, and we are an "AAA Level Standardization and Good Behavior Enterprise". The technology center of our company was rated as Provincial Technology Center, and our company has become the base of production, education and research of Shandong University of Science and Technology.Advanced equipment, excellent talents and strict management help us develop first-class products.

The company has been deeply rooted in the hydraulic field for 20 years, with a stable management team and key technical personnel. Adhering to the corporate philosophy of "creating hydraulic products for customers", the company has persisted in research and development investment for many years, mastering core production process technologies such as cold drawing technology, sealing structure optimization technology, piston rod heat treatment and surface treatment technology, mirror polishing roughness control technology, and accumulator dual chamber technology. Starting from the actual needs of customers, the company continuously innovates and gradually positions itself in the mid to high end market, providing high-quality products for customers in industries such as automobiles, coal mines, petroleum, and engineering machinery with high-quality services.
 

Production Process & Equipmnet

Cold Drawing

The utilization rate and performance of the material are improved through the cold drawing process.

Heat Treatment
The surface hardness of the material is improved by heat treatment.

Boring
Through boring treatment, the finish of the inner hole of the material is improved.

Hard Chrome
Through chrome plating treatment, the corrosion resistance of the material is improved and the service life is prolonged.

Every piece of hydraulic cylinder are processed through dozens of steps, including raw material processing, cylinder assembly, painting, etc. Each step is indispensable, and we also have advanced processing equipment to ensure that the processing dimensions of raw materials meet the requirements of product production.

Quality Guarantee System

1. Trial Operation Test
2. Start-up Pressure Test
3. Pressure-Tight Test
4. Leak Test
5. Full Stroke Test
6. Buffer Test
7. Testing the Effect of Limit
8. Load Efficiency Test
9. Reliability Test
       Every piece of hydraulic cylinder are tested and will send out only after they are pasted the each test. Our company has abundant technical force and perfect testing means. By making wide technical and business cooperation with many related enterprises, universities, colleges and institutes both at home and abroad, and employing senior engineers and software engineers, we have greatly strengthened and improved our designing, processing, and testing abilities.

Machining Equipment

Our company have 700 sets manufacturing equipment, such as cold drawing production line, heat treatment production line, surface treatment production line, testing equipment, various digital-control machining equipment, gantry style linear electroplating production line.

Certificate And Our Customers


Domestic Marketing Locations
The company's products are widely sold in Shandong, Shaanxi, Shanxi, Henan, Hebei, Hubei, Beijing, Inner Mongolia, Gansu and other more than 20 provinces, municipalities and autonomous regions.

Foreign Marketing Locations
Our products are exported to the United States, Canada, Mexico, Russia, South Africa, Indonesia and other Europe, America, South America, Southeast Asia.
 

After Service

1.Pre-sale service: Keep communicating with the truck manufacturers , including selection of product model , design of hydraulic system, test of performance and analysis of the accident. Once the problems occur, we will solve them immediately together with truck manufacturers.

2.The sale service: Provide training and technical support for users.

3.After-sale service: Solve the problem firstly, then analyse responsibility ; Replace the system components immediately if any need.

4.24 hours telephone service hotline.

FAQ

Q1:What's the brand name of your products ?
A:Generally, we use our own brand "WTJX", OEM is also available as required.

Q2:Hydraulic cylinder internal leakage?
A: There are 3 main reasons causing internal leakage : Overload, polishing is not well controlled, bad seal kits. As is known to all, vehicles in China are often overload,our products all designed to bear the overload power. We have numerical control machine to assure the polish processing. And we use the imported seals to meet customers' demands.

Q3:Does your piston rod get ruptured easily?
A: Hard chrome plating quenched and tempered 45# steel for piston rod to assure sufficient hardness and toughness.

Q4:What about the quality feedback of your products?
A: Guarantee the quality from the raw material. We have cold drawing production line and nickel-chrome electroplating production line, so we can produce cold-drawing pipe and hard-chrome pipe used for hydraulic cylinder!