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COLD ROLLED SEAMLESS TUBING
COLD DRAWN SEAMLESS STEEL TUBE
ABOUT 
RAYMOND STEEL TUBE

Jiangsu Quality AAA Grade Brand Enterprise

Changzhou Raymond steel tube Co.,Ltd is located in Wujin District,Changzhou City,Jiangsu Province,China and located between Nanjing and Shanghai.It only takes 1 hour by high speed rail to the international metropolis——Shanghai.The geographical location is superior and the traffic is developed here.
Our company’s main products is seamless precision tubes with wide usage.Our factory covers an area of more than 20000 squre meters,and…
ico01High-Quality Raw Materials
All raw materials from reliable steel mills
ico03Good mechanical properties
Used for various deep processing: bend, cutting, drilling and so on.
ico02High Precision
Guarantee the dimension tolerance: cold drawn pipe: ±0.1mm  cold rolled pipe ±0.05mm. 
ico04Stable delivery time
Several production lines, advanced equipment, more than ten workshops.
Anaerobic annealing furnace
Straightening machine
Cold drawn machine
Cut-off machine

WE HAVE MORE INNOVATIVE PRODUCTS

Source in Consistent High Quality and Superior Performance.
OUR NEWS
  • 04-17
    2018
    How to finish the surface treatment of 45# precision seamless steel pipe?

    As we all know, 45# precision seamless steel pipe is a kind of steel which belongs to the medium carbon structure. It has good performance in manufacturing machinery and equipment, hydraulic structure and auto parts, and the mechanical performance is very good. The price is also relatively low, Read More »

  • 04-04
    2018
    How to make non-destructive test for steel pipe

    The common nondestructive testing methods include: ray detection, magnetic powder (or magnetic flux leakage) detection, penetration testing, ultrasonic testing, eddy current testing.1. Ray detection (RT)One of the earliest methods of nondestructive testing has been widely used to test the internal Read More »

  • 04-03
    2018
    Rockwell hardness

    The Rockwell hardness is an index of the hardness value determined by the depth of the indentation plastic deformation, and 0.002 mm as a hardness unit. Using of different indenters and different test forces in the Rockwell hardness test results in different combinations, corresponding to different Read More »

  • 04-02
    2018
    Relationship among tensil strength, yield strength and enlongation

    Cold rolled or cold drawn seamless steel tube is used in mechanical structure and hydraulic equipment of high dimensional accuracy and suface finish good.Ray seamless steel tube normally use 1010,1020,1045 etc high qaulity carbon steel and 16Mn or 30CrMo or 40Cr etc alloy steel tube . Read More »

  • 03-28
    2018
    Cold Drawn steel tube technology introduce

    Cold drawn steel tube technology is more and more important for us to focus on, this technology has been widely used at present, to promote the development of the industry as a whole and its specific advantages are obvious, the cold drawn technology improved the efficiency of the whole, Read More »

FAQ

  • Q what is the main products of you company?

    A Our compay specilized in cold drawn seamless steel tube and cold rolled seamless steel tube.It is used for gas spring ,shock absorber, front fork,rear cushion ,exhaust muffler, automitve silences.

  • Q What is your company's annual output？

    A Our factory can product 8,000 tons seamless tubes one year.

  • Q What is the main application of the product？

    A Our seamless tube main use in gas spring，shock absorber，heat exchanger ,front fork , rear cushion, exhaust muffler and condenser and other occasion where high precision and brightness and mechanical property is required.

  • Q Your company can produce the steel tube with 80mm outside diameter?

    A Sorry，the OD of our steel tube is from 6mm to 65mm,tolerance :1-8mm.

  • Q What the main market of your company？

    A In addition to the domestic market, our existing customers in Pakistan, Malaysia,Thailand and Malasia ,USA,Canada etc.

  • Q How many machines in your factory?

    A 1. 25 cold rolled machines and 11 cold drawn machines                                                                                                          
    2. 5 Straightening machine .                                                                                                                                                      
    3. 5 Cut-off machine. Annealing furnace, Mechanicial tester, rockwell hardness tester, chemical analysis instrucments. Eddy current Testing Machine

  • Q How do you ensure quality?(quality control)？

    A
    1.We purchase high quality raw material from big steel corp.
    2.We test 3-4 times in the production process.And quality control department test pipes random.Before packaging,pipe should be test in mechanical tester and rockwell hardness tester and Eddy current testing machine
    3.Our Annealing furnace control temperature and annealing time through Semi-automatic digital control  . It means we can control mechanical properity.   

  • Q Compare with other company,what the advantage of your products ?(Hong YI)

    A 1.We are family business ,we can save some unnecessary cost                                                                                      
    2.We have our own brand. so we are responsible  for our brand.Brand is our quality                                                      
    3.We can provide best after sales service ，price is better in same quality                                                                                                                        
    4.Semi-auotmatic gas annealing furnace can control mechanical properites better                                                                  
    5.Adequate supply capacity

  • Q How do you gurantee your delivery time？

    A 1.For some big factories. Your quantity is not very big,but you are VIP customer in our factory. So we will do our best for your goods                                                                                                                                                                                
    2.If you cooperate with us. we can cancel some small customers. only produce for you

  • Q How long have you had the experience of production？

    A
    1.We have more than 14 year's experience
    2.our factory covers an area of 20,000 square meters and more than 100 employees
    3.Most of our customer are gas spring factories, shock absorber factories and automotive spare parts factories in different countries

  • Q Have you ever worked with big companies?

    A Yes,we have ever cooperated with Toyota. They purchased cold rolled seamless steel pipe for shock absorber.

  • Q What is your main product?

    A
    1.Our main products include cold drawn seamless steel tube and cold rolled seamless steel tube
    2.OD：6-65mm；Wall thickness：1-8mm
    3.We can produce 8000 tons of steel tube every year.
    4.60% cold drawn tubes and 40% cold rolled tubes

  • Q What kind of quality certification you can provide？

    A What quality certification you need？We can provide most certification you need.

  • Q How long will the delivery take from China to us？

    A
    Before delivery time ,could you please provide more information?                                                                                          
    1.Which craft you need？The time of cold rolled tubes may be longer than cold drawn tubes.
    2.It also depends on your quality. The MOQ is 1 ton.One container , the delivery time is around 25 working days.
    3.And the shipping time may be takes （） days without special situation. It is just for reference

  • Q Can I return or exchange pipes if there are some unqualified products

    A
    1.Sorry, we cant provide this service.Before production, please provide details information . And before you place an order,we will send sample to test                                                                                                                                                  
    2.Through testing , we will arrange the production . Quality control department will test pipe random while the goods be finished. Or we can send random small pieces to test again
    3.Our rate of finished products is over 95% and some size are more higher 
    4.We will send more as compensation if  the quantity is beyond the rate of finished products in next order.

  • Q What is the advantage of your products ?

    A 1.The complete production equipment: Pickling tank--Phosphating pool--Annealing furnace--cold drawn equipment--cold rolled equipment-cut-off machine-- straightening machine--Eddy current testing machine--Mechanical teser--Rockwell hardness tester--Chemical analysis instrucments.                                                                                                    
    2.Production testing : 2-3 times testing during production .Before packaging , Eddy Current Testing Machine test all pipes again. To test mechanical property, hardness                                                                                                                                    
    3.Standard sea freight packaging: Internal wrapple with plastic film , external wrapped with woven bags , iron stand              
    4.The company is famous for its good after sale service.All sales is online 24hours to help you solve the problem ASAP
CONTACT US
If you have any questions or comments, please contact us using the form below.

CONTACT US

Add : Chuangsheng Road. Luoyang Industrial Zone,Luoyang Town, Wujin District, Changzhou city. Jiangsu Province, China

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 Tel  :+86-519-88522885
 Tel : +86-519-85585188
 Fax : +86-519-88522598
 E-mail : raysales5@raysteeltube.com
 Skype : raymondcc8@outlook.com

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