ASTM 4135 alloy cold rolled seamless steel pipe for bicycle

Cold-rolled (dial) seamless steel pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipes, and also includes carbon thin-walled steel pipe and alloy thin-walled steel pipe. Stainless steel thin-walled steel pipe and special-shaped steel pipe. The outer diameter of hot-rolled seamless pipe is generally larger than 32mm, the wall thickness is 2.5-75mm, the outer diameter of cold-rolled seamless steel pipe can be up to 6mm, the wall thickness can be up to 0.25mm, the outer diameter of thin-walled pipe can be 5mm, and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.

Generally used seamless steel pipe: it is made of 10, 20, 30, 35, 45# and other high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot-rolled or cold-rolled . Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid conveying pipes. 45, 40Cr and other medium carbon steel seamless pipes are used to make mechanical parts, such as the force parts of automobiles and tractors. Generally, seamless steel pipes are required to ensure strength and flattening test. The hot rolled steel pipe is delivered in a hot rolled state or a heat treated state; the cold rolling is delivered in a heat treated state.

Q: How about the delivery terms?
A: 1. Payment: T/T, 30% deposit in advance and balance before delivery.

2. Min. Order Quantity:3TON or as required.

3. Transportation: By express (DHL,TNT,),air,sea,and train.

Q: Do you accept sample order? 

A: Yes sure, please contact us for details.

Q: How about your after-sales service?

A: As a professional steel exporter, we offer promote technology support for all problems and questions.
Besides, we accept goods return or replace for quality problem.

Q: How does your company control the quality?

A: Quality first. In order to guarantee high quality for our products,
Modern always makes a serious inspection for all products and raw materials in strict procedure.


Why choose us?

1. We're Gold Supplier.  Evaluated by Alibaba.
2. More than 9 years exprience, especially in cold rolled steel pipe industrty.
3. Export to Korea, Pakistan, Brazil, Russia, India, Vietnam and other countries
4. Work with many famous brands, such as Tisco, Baosteel.
5. Quick response to your inquiry.
Timely communication and feedback.
6. Samples could be provided.
7. Excellent production technology.
Different shapes of products can be cut and provided.
8. Strong production capacity. Fast delivery capacity. Quick supply capacity. 

9. Strict Quality Control and Inspection in every process.

 
Our Advantages
1. We are a specialized manufacturer. Competitive price and quality from our own factory .
2. Best service with 24 hour`s reply .
3. Flexible payment with T/T,L/C , etc .
4. Smooth production ability(1000tons/month).
5. Quick delivery and standard exporting package .