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China, Chinese Precision Steel Pipe Cold Drawn Pipe E355 (St52) Honed Tube for Hydraulic Cylinder1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Hydraulic PartsHydraulic PipeCold Drawn Pipe E355 (St52)Steel Tube
Shandong Wantong Hydraulic Co., Ltd.
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Product Description Product DescriptionOur company mainly produces hydraulic cylinders, high-precision cold-drawn pipes, and inner-hole boring and rolling steel pipes. Our products are widely used in hydraulic cylinders, engineering machinery, oil pipelines, textile machinery, gas cylinders, etc. The company is well-equipped and has excellent technology. It has 3 sets of cold-drawn units with drawing forces of 150T, 250T, and 600T, which can meet the drawing processing of pipe diameters ranging from φ45-630mm. SpecificationManufacturing Technique of Cold-Drawn Seamless TubesCold drawing is a precision manufacturing process used to create seamless pipes and tubes. It involves several stages, each of which plays a crucial role in producing tubes with the desired properties.Here is a step-by-step breakdown of the manufacturing process:1. Billet Preparation:The process begins with the selection of high-quality raw materials, typically steel or alloy steel billets.The billets are inspected for defects and then cut to the desired length.2. Piercing:The prepared billet is heated to a suitable temperature to facilitate piercing.A piercing rod with a pointed end is used to create a hole through the center of the billet. This initial hole is called a "bloom."3. Elongation:After piercing, the bloom is elongated to reduce its diameter and increase its length.This process is achieved through a series of rolling operations, which involve passing the bloom through multiple sets of rolls.4. Cold Drawing:The elongated tube, known as a "hollow," is then cold drawn through a die to further reduce its diameter.This process is performed at room temperature, ensuring that the tube maintains its seamless construction.5. Annealing:To relieve any stresses induced during cold drawing and improve the tube's mechanical properties, it undergoes an annealing process.The tube is heated to a specific temperature and then slowly cooled.6. Cutting and Finishing:After annealing, the cold-drawn seamless tube is cut to the desired length.The ends of the tube are finished to meet specific requirements, such as chamfering or threading.7. Quality Control:Stringent quality control measures are applied at every stage of production to ensure the final product meets industry standards and customer specifications.8. Surface Treatment:Depending on the application, the tube may undergo surface treatments such as polishing, coating, or plating for added protection and functionality.9. Inspection and Testing:The finished cold-drawn seamless tubes undergo comprehensive inspection and testing, including dimensional checks, non-destructive testing, and material analysis.10. Packaging and Shipping:Finally, the tubes are carefully packaged to prevent damage during transportation and shipped to customers, ready for use in various applications.Company ProfileShandong Wantong Hydraulic Co., Ltd. (Stock Code: 920839), founded in June 2004, is a domestic medium and high pressure hydraulic cylinder supplier integrating R&D, production, sales and service. Its main products include three series of hydraulic cylinders for dump trucks, hydraulic cylinders for mechanical equipment and hydropneumatic springs.The company's management team and main technical personnel are stable. We has constantly innovated from the actual needs of customers, has gradually positioned the medium and high-end market, and has provided high-quality products for customers in automobile, coal mine, petroleum, engineering machinery and other industries with high-quality service.Production Equipment There is one pickling, phosphating, and saponification production line, which has acid mist treatment in accordance with environmental protection requirements and can meet the processing of 200 tons of steel pipes per shift. At the same time, it is equipped with 2 heat treatment furnaces and 2 high-precision multi-roller straightening machines, with a straightening accuracy of 0.3mm/M. There should be multiple inner-hole scraping and rolling equipment to meet the boring and rolling processing within a diameter of 40-630mm and a length of 6000mm.Quality InspectionOur 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.Certificate And Our CustomersDomestic Marketing LocationsThe 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 LocationsOur products are exported to the United States, Canada, Mexico, Russia, South Africa, Indonesia and other Europe, America, South America, Southeast Asia. FAQQ1: Are you a factory or a trader?We are a factory, and in China we are a leading enterprise in the hydraulic industry. We have two factories covering an area of 180,000 square meters, with more than 700 employees and more than 1,000 sets of production equipment. Q2: Do you support OEM and ODM?We can accept both. Q3:What is your after-sales service?Our products come with a 14-month warranty.lf any quality issues arise during this period,We will replace the parts for free for maintenance, or directly replace the new cylinder. Q4: Do you have any cylinder surface treatment processes?Our company has 6 complete surface treatment production lines. We can perform chromium plating, zinc plating, copper plating, copper melting ,QPQ,and laser cladding.Q5:How to ensure the cylinder sealing performance?We use high-quality imported or domestic first-line brand seals (such as Hallite,Longli, etc.),Our cylinders will undergo pressure resistance tests and pressure holding tests higher than the rated working pressure before leaving the factory to ensure long-term stable operation without leakage within the rated pressure range.Q6:How long is your delivery time?10-25 days.Q7:What is your payment term?Usually, we choose T/ T. Q8:How is your after-sales service?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.The sale service: Provide training and technical support for users.After-sale service: Solve the problem firstly, then analyse responsibility ; Replace the system components immediately if any need.24 hours telephone service hotline.
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