Chrome plated tubing general Introduction
Chrome plated tubing usually refers to the chrome plated OD tubing, it is known as chrome plated hollow bar also, and this is another important material than chrome plated rod to manufacture the hydraulic piston rods. With chrome plated tube, people can greatly reduce the weight of the hydraulic piston rod, when design the safety hydraulic cylinders. So in the field of manufacturing hydraulic cylinders, chrome plated od tubes are very popular also.
Chrome plate tubes are known as chrome plated hollow bars or hollow chrome bar also, they are made of cold drawn seamless tubes or hollowed bars, by grinding and precision polishing on the outside diameter and then chrome plated to a certain thickness on the OD. So in USA, they also call it chrome plated OD tubing.
Detailed Specification of our chrome plated OD tubing
Materials of our chrome plated tubes
Our chrome plated steel tube is manufactured from top quality carbon steel cold drawn seamless tubes or hollow bar. The steel grades available in St 52.3, St37.4, E355, SAE 1020, SAE 1026, SAE 4041, SAE 1045 and so on.
| Steel Grade | Chemical Composition % | ||||
| Carbon | Mn | Si | P | S | |
| ST 52.3 | 0.14 – 0.18 | 1.20 – 1.40 | 0.15 – 0.30 | 0.020 max | 0.010 max |
| SAE 1045 | 0.43 – 0.50 | 0.60 – 0.90 | – | 0.040 Max | 0.050 Max |
| CK 45 | 0.42 – 0.50 | 0.50 – 0.80 | 0.40 Max | 0.035 Max | 0.035 Max |
| SAE 1020 | 0.15 – 0.20 | 0.30 – 0.60 | – | 0.035 Max | 0.035 Max |
Besides the above materials, we also produce SAE 4140 chrome plated steel tube for high performance and high strength applications.
| SAE 4140 | C% | Si% | Mn% | P% | S% | Cr% | Mo% |
| Min | 0.36 | 0.1 | 0.65 | – | – | 0.75 | 0.15 |
| Max | 0.44 | 0.4 | 1.1 | 0.04 | 0.04 | 1.2 | 0.35 |
Mechanical Properties of chrome plated od tubing
Here in below chart is the tensile strength, yield strength of our chrome plated hollow bar with different steel grades.
| Steel Grade | Mechanical Properties | |||
| Yield Strength | Tensile Strength | Elongation | Hardness | |
| SAE 1045 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 10% | Rc 60-72 |
| CK 45 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 10% | Rc 60-72 |
| ST 52.3 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 15% | B-80 |
| SAE 1020 | 60000 psi /414 Mpa | 70000 psi /517Mpa | 10% | B-75 |
| SAE 4140 | 800 Mpa /115K psi | 900 Mpa /130K psi | 20% | 270 HB |
Chrome plated hollow bar Size Range
As the leading China chrome plated hollow bar suppliers, our factory produces and supplies chrome plated tubes / chrome plated hollow bars in a wide range of sizes as below:
O.D: 15 mm to 609 mm, W.T: 1 mm to 40 mm.
Besides metric sizes chrome plated hollow bar, our factory also manufactures and supplies imperial size chrome plated tubing.
Length of our chrome plated hollow bar
Our factory can supply chrome plated tubing in fixed length or random length.
The max. length we can make is 14 meters.
Dimension Tolerance of our chrome plated OD tubing
Chrome plated OD tubing usually has a very precision outside diameter tolerance, because they are used as hydraulic piston rods. Our O.D tolerance of chrome plate steel tube can be ISO f7, f8 and others according to customers’ requirement.
Surface requirement of Chrome plate tubing
Our factory can produce chrome plated OD tubing with O.D surface roughness below Ra 0.4 microns. Other requirements on request.
The chrome plated layer thickness usually can be 10 microns to 100 microns according to clients’ requirements.
Besides chrome plated OD tube, there is also chrome plated ID tubing, which is made of honed tubing, by chrome plating on the inner diameter of the honed ID tubing with a certain chrome thickness.
Introduction of Company – one of the leading China chrome plated tube suppliers and manufacturers
Our factory Skyline is one of the professional China chrome plated tube suppliers and manufacturers located in Wuxi, Jiangsu. Our factory produces and supplies chrome plated steel tube in a wide range of dimensions in material SAE1020, ST52, SAE1045, SAE 4140 and stainless steels for nearly 30 years.
Our company covers an area of about 30000 square meters, and consist of a hydraulic cylinder honed tube factory and a factory for hard chrome plated shafts and chrome plated od tubing.There are around 180 workers in our company and about 20 of those in charge of quality and technologies.
Our advantages
Here below are the main advantages of our chrome tubing and services.
- Rich and mature manufacturing experience: our factory has nearly 30 years producing experience for chrome plated steel tube;
- Advanced manufacturing equipment and facilities, including: cold drawing machine, cold rolling machine, honing machine, skiving & roller burnishing machine, straightening machine, polishing machine, heat treatment furnace, grinding machine, cutting machine, etc. Our professional engineers do regular scheduled maintenance on these machines to guarantee them work well. All these above ensure us to produce high quality and high precision chrome plated steel tube.
- High quality raw material: our raw materials for honed cylinder tube are mainly from the famous China steel makers, such as TPCO, SHA STEEL, BAO STEEL, which are best and largest steel manufacturers in China.
- High precision: Our chrome tubing is manufactured with high dimension precision, tolerance can be ISO H7, H8 or H9, H10, depends on the dimensions and customers’ requirements. The high precision dimensions can ensure the precision of the hydraulic cylinder piston rods.
- Reliable Packing: All the chrome plated steel tubes will be oiled by the anti-rust oil before delivery. And in order to protect the outer surface of the hollow chrome bar during loading and unloading, we will use cardboard (paper pipe) to pack each hollow bar tubing, and then pack with seaworthy package such as wooden cases or rope wraps. And then the honed pipes will be packed with seaworthy package such as wooden cases or plastic bags.
- Strictly quality control: Our factory has a QC team of more than 10 persons. Every honed cylinder tube will be inspected before shipment. The inspections are carried according to corresponding standards and customers’ requests, main test which including: Chemical Analysis Test, Tensile Test, Dimension Inspection, Roughness Test, Chrome plated thickness test, straightness inspection, and other tests according to standards and cusotmer’s requirements.
- Mature quality management system: our Total quality management system ensures all the working processes related to product quality are in good control.
Popular Questions and Answers
Question 1: What is the delivery time of chrome steel tube?
Answer: As one of the largest chrome plated tube suppliers in the China, we stock a lot of different sizes and materials of mother tubes and hollow bars for chrome tubing, so normally our delivery time is 10 – 20 days depends on the quantity and size.
Question 2: Can you ensure the quality of the chrome plated OD tubing?
Answer: Yes, we execute Total Quality Management System in our hydraulic cylinder tube factory. We only use raw materials (mother tube) made in China top quality steel maker such as TPCO, Sha-Steel, Huaigang Special Steel and so on. And we will inspect every chrome plated tube before packing, the chrome plated steel tube will be supplied with mill test certificate according to EN 10204 /3.1.
Question 3: Is your company chrome steel tube manufacturers or trading company?
Answer: Yes, we are true chrome hollow tube factory located in Wuxi, Jiangsu, we are one of the professional chrome plated tube, rod, and hydraulic cylinder tube manufacturers in China, we welcome customers to come to visit our factory. Then you can see the details.
Question 4: How can you protect the inside surface of the chrome tubing (hollow chrome bar) from damage during transportation?
Answer: To protect the inner surface of the hollow chrome bar, we will plug each tube with tube caps on each end, the tube caps usually are plastic in green or yellow. And to protect the outer diameter of hollow chrome bar, we will use a cardboard (paper tube) to pack each chrome plated hollow bar.
Question 5: Did you export your Chrome plated tubes to oversea countries? And what is your main oversea market?
Answer: Yes, as the one of the largest honed tube, chrome plated rod and chrome plated steel tube suppliers in China, we exported our products including chrome steel tubes to many customers in oversea countries, our main market including USA, Vietnam, Australia, Russia, UAE, Canada, South Africa, Thailand, Brazil, etc.
Our chrome plated tubing is widely usde for the applications of hydraulic cylinders for various machines, and other applications where high surface performance and high precision diameter is required. As one of the leading manufacturer of honed tube, chrome plated bar and chrome plate tubes, we exported our chrome plated tubes to many countries in the world. These countries including Vietnam, Australia, Columbia, South Africa, UAE, Saudi Arabia, Korea, USA, Canada, Mexico, Thailand and so on.
