200*245 St52 E355 Honed Steel Tube with Thread Machined for Hydraulic Cylinder

200*245 St52 E355 Honed Steel Tube with Thread Machined for Hydraulic Cylinder

PRODUCT INTRODUCTION
Cold drawing cylinder tube cylinder tube introduction

What is a cylinder tube?

Cylinder tube is a kind of seamless steel tube, also known as hydraulic prop tube or quilted pipe, is a kind of cold drawn or hot rolled, and heat treatment after the steel tube material. Because the inner and outer wall of the cylinder tube has no oxide layer, it can withstand all kinds of high pressure, and the dimensional accuracy is also high, and then the cold bending is not deformed, after expanding, flattening will not produce cracks and other characteristics, mainly widely used in the manufacturing of automobiles, hydraulic transmission equipment of various large machinery and coal mining face hydraulic support, hydraulic cylinder, etc

What are the two kinds of cylinder tubes?

There are two kinds of oil cylinder tubes: cold drawing oil cylinder tube and high strength oil cylinder tube. S700 and S890 are high strength oil cylinder tubes made of these two materials, which have good hardenability and uniform performance after heat treatment. They are very suitable for manufacturing large diameter thick wall high strength oil cylinder.

What are the implementation standards for cylinder tubes?

Cylinder tube material standard: GB/T699, GB/T3077, EN10210, EN10297

Manufacturing and inspection standards: GB/T8162, GB/T 17396, Q/OHAD032, can also be produced according to customer's technical agreement.

What are the main materials of cylinder tube?

The main material of seamless steel tube for oil cylinder is: 20#, 35#, 45#, Q345B/C/D/E, 25Mn, E355, 27SiMn, 30CrMnSiA, 30CrMoA, 20MnTiB, S700, S890


My company production and sales of the oil cylinder cylinder bobbin features and advantages: high quality of raw material is provided by HengGang special steel, steel of high purity, small chemical composition range, low content of harmful elements, internal and external surfaces of the pipe body quality and geometry size of high precision, stable performance, can fully meet the needs of users the use of hydraulic prop pipe and hydraulic cylinder safety and reliability requirements.
1. Description: Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder. 13. Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness. 

INTERNAL SURFACE CONDITION OF HONED TUBES:


INTERNAL SURFACE CONDITION OF SKIVED&ROLLER BURNISHED TUBES:

FREQUENTLY ASKED QUESTIONS
1. MOQ: Generally Min Order Quantity can be 2-3 tons/size for tubes with OD below 250mm, and 10 tons/size for tubes with OD above 250mm. Sometimes, it depends on steel grade you need. If you need special grade like E410, E470 or alloy steel tube, MOQ should be 10 tons/size at least. 
2. Delivery Time: Generally, our delivery time for honed tubes is around 40-60 days depending on the sizes and quantities. It will take us 15-30 days to get raw material. For example, if you need 3 tons of small size honed tubes 50mm*40mm with roughness of Ra0.25um max, it will take us at least 30 days to hone this size. 
3. Warranty&Guarantee: Warranty&guarantee period is 6 months since we deliver the tubes, and we are not responsible for quality problem caused by wrong unloading or storage after shipment. We welcome customer's inspection before shipment. 
4. Payment Method: We accept payment method like T/T, L/C, or D/P, but it depends on our investigation about customers. We have a solution to evaluate the credit of customers from all over the world, and time and amount of D/P we can release is determined by the evaluation. 
5. Quality Control: 90% of the tubes are made from hot rolled seamless pipes. So, quality of raw material determined quality of finished tubes. We purchase raw material from stable suppliers who are leading steel mills, and we inspect the raw material as per the specifications. During our production procedure, there is inspection and quality control in every stage. 
 

 The annual yearly output is about 30,000 tons which is exported to all over the world, such as Korea, Malaysia, Singapore, Vietnam, Philippines, Thailand, Myanmar,HongKong, Taiwan, India, Pakistan, Bangladesh, Iran, Egypt, Australia, United Kingdom, Serbia, Guatemala, Argentina and so on. Tianjin Boerking Steel Pipe Co., Ltd believes in honesty,mutual respect and development, consistantly high quality and we continue to seek improvements by listening to our clients and giving due attention to their specifications and suggestions. Looking forward to your enquiry!