We have excellent talents in technology, service, production and management. We can meet the needs of various users with advanced technology and high-quality Pneumatic Honed Tube, Tube Welding Positioner, Auto Assistant Small Welding Positioner. Since the establishment of our company, good benefits have been achieved. The practice results show that our company can better meet the current industry demand. You should really feel free of charge to speak to us. We focus on building a good reputation and adhere to the business principle that the quality of our products and services is the life of our company. In the fierce market competition, the scale of our company is growing, and the sales volume is rising.
Seamless Cold Drawn Introduction
WUXI HENGTONG PETROLIC MACHINERY manufactures Seamless Cold Drawn, ready to hone tubes, honed tubes, skived and roller burnished tubes, chrome bar, piston rods and high-precision cold-drawn steel tubes, We are well-equipped with 300 ton, 150 ton, 65 ton, 20 ton of cold drawing machine,9 meters CNC boring machines, 20 sets honing machines , one set furnace and advanced quality testing equipment, which combine cold drawn, cold-rolled, heat treatment and traditional machining process.
Seamless Cold Drawn Technical Parameters and Details
Application: hydraulic cylinder, pneumatic cylinder, oil cylinder, telescopic cylinder.
Original: Jiangsu, China
Certification: ISO9001.
Material: SAE1020, 20#, ST45, CK45, ST52, E355
Payment term: TT, LC
Delivery date: usually 20 to 40 days.
Packing: packed in bundle, with caps on both ends.
Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: Depends on exact size and material.
Size and Tolerance:
Working method | Cylinder ID (mm) | Length (m) | Straightness (mm/m) | Tolerance on ID | Tolerance on WT | Roughness (μm) |
Cold drawn | 40-320 | ≤12M | 0.2-0.5 | / | ±5% | 0.8-1.6 |
Cold rolling | 30-100 | ≥12M | 0.2-0.5 | / | ±5% | 0.8-1.2 |
cold drawn- honed | 40-500 | 8M | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.8 |
Cold drawn-skived | 40-400 | 7M | 0.2-0.3 | H8-H9 | ±5% | ≤0.4 |
Deep hole boring- honed | 320-400 | 8M | 0.2-0.3 | H7-H9 | ±8% | ≤0.8 |
Deep hole boring- skived | 320-400 | 7M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |

Quality control
1. We only buy raw material from famous tube factory, and Checking raw material quality before production.
2. We check the tube ID tolerance, OD tolerance and surface after cold drawn one by one.
After-sales service:
1. Where to buy our products for one year warranty and life long maintenance.
2. 24-hour telephone service.
3. A large stock of components and parts, easily-worn parts.
Our Advantage
1. We has two factories of 40000 square meters and totally 150 employees to promise the Honed Tubes In Stock best quality control;
2. According to the cylinder pressure and inside diameter size ,different hydraulic cylinder honed tube Would be choosed ;
3. Our motivation is --- customers’ satisfaction smile;
4. Our believing is --- pay attention to every detail;
5. Our wish is ----perfect co-operation.
In line with the enterprise spirit of 'integrity is the foundation, innovation is the driving force, quality is the guarantee', adhering to the enterprise tenet of 'solving problems for customers, creating the future for employees', we strive to build a first-class brand in the field of Wholesale St 52 High Precision Seamless Steel Tubes for Hydraulic Cylinder DIN 2391 Precision Cold Drawn Seamless Steel Tube Supplier. As for our employees, we want to provide a strong impetus for growth and well-being through good value realization. Corporate culture reform plays a very important role in improving the management level of enterprises and the construction of corporate culture system is the core content of corporate culture reform.
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