Choose Us As A Long-term Reliable Partner
Advanced equipment
We have advanced CNC processing equipment, polishing machines, welding robots, our own chrome plating workshop, and complete testing instruments,It ensures the processing accuracy and product quality.
Own electroplating workshop
We have our own electroplating workshop, which can ensure the thickness and accuracy of the electroplating coating. This is very important to ensure the quality of products.
painting lines
We have several painting lines to ensure the beautiful appearance of the product
Inspection line
Each cylinder be tested one by one strictly, and ensure the quality reliable.
Experienced workers
Our workers have many years of production experience.
High Standards of Hydraulic cylinders manufacturer
Special Cylinders (per customer hydraulic cylinder drawings)
- With cushioning systems;
- With position sensors;
- Qualified for mining, marine and off-shore,
heavy-duty applications; - Large-scale telescopic cylinders;
- Piston diameter: up to 1000 mm;
- Operating stroke: up to 15 m;
- Working pressure: up to 500 bar.
Regular Cylinders (Minimum order quantity is 10 pcs）.
- For agricultural, forestry, construction machinery;
- Piston diameter provided according to customer’s hydraulic cylinder drawings;
- Regular materials such as CK45 and Steel E355;
- Normal operating pressure range 160-300 bar.
Telescopic Cylinders
- For trailers, tippers and dump trucks and more;
- Single and double acting;
- Up to 7 stages;
- Total stroke up to 15 m;
- Operating pressure up to 300 bar
- Production capacity: 85000 annually;
- Barrel precision class: H8;
- Piston rod precision class: f7;
- Piston rod induction hardening;
- Nickel chrome plating;
- Ceramic carbide surface coating;
- Standard chrome plating.
Quality Control Hydraulic Сylinders manufacturer
Hundreds of customers trust us with the quality of their products. We are sure that together with you we will also achieve success!
We try to foresee all possible defects and eliminate them before they occur.
The test pressure is 1.5-2 times higher than the nominal pressure. No bloating effects or material problems.
We don’t limit you, and the warranty period can even be extended at your request
The high quality standards of our Hydraulic Сylinders manufacturer
Pre-production control
This process involves inspecting incoming hydraulic cylinder drawings and raw materials. Raw materials are checked to ensure that the material meets standards and customer requirements. PPI helps establish production timelines and assures new customers that the raw materials meet standards. Inspection is performed by our quality control engineers, who analyze the material to ensure that it meets the standards of the material grade.Inspection during production
There are several parts in all hydraulic cylinder drawings that are manufactured using a variety of techniques and in a variety of manufacturing departments. As a result, each of these components is rigorously inspected at every stage of production to ensure that it conforms to its hydraulic cylinder drawing and is marked accordingly. Consequently, we always have information on when, where, and by whom a part was produced. Thus, any detected defect can be immediately addressed and eliminated, and the parts are rechecked before the hydraulic cylinder is reassembled.
Failure Consequence and Cause Analysis
Testing of Hydraulic Cylinders
The final product can only be shipped to the customer after it has been tested and all requirements for pressure, operating temperature and other required parameters have been met.
All hydraulic cylinders are thoroughly tested to detect internal and external leaks. 100% of cylinders go through this process: each cylinder is opened and closed to check that parts are within acceptable levels and that seals are holding. We also provide extra seals with each batch and cylinder disassembly kits, just in case.
To make sure there are no bloating effects or material problems, a pressure test is performed that is 1.5 times the normal operating pressure of the cylinder in service. It is not recommended that a hydraulic cylinder be operated above its rated working pressure, but the test makes sure that there is no internal bloat or distortion during the intended use of the cylinder. This test extends the piston rods as far as they will go and keeps them under pressure for a period of time. This helps assure the quality and integrity of the seals. Oil leaks lead to reduced performance of hydraulic cylinders, so we take special care to make sure all cylinders are leak-proof and stay that way during the warranty period.
The test stand is used to measure the pressure exerted by the cylinder. To measure the impact force, the cylinder is pushed against a barrier. For double-acting cylinders, the reverse pulling force is also measured, and all figures and test results are provided to the customer upon request.