GB/T 3639 Cold Drawn Seamless Steel Tubes For Precision Applications

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of gb/t 3639 cold drawn seamless steel tubes for precision applications in China, featured by quality products and low price. If you're going to wholesale durable gb/t 3639 cold drawn seamless steel tubes for precision applications made in China, welcome to get pricelist and free sample from our factory.

 

Introduction of GB/T 3639 cold drawn seamless steel tubes

GB/T3639 seamless steel tube for precision is a type of seamless steel tubes that is made of cold drawn or cold-rolled process, mainly used for mechanical structures and hydraulic equipment. Its characteristics include no oxide layer on the inner and outer walls, high pressure resistance, no leakage, high precision, high smoothness, no deformation during cold bending, flattening without cracks, surface rust prevention treatment, etc.

 

Specification

Product name	Cold Drawn Seamless Steel Pipe
Place of origin	Tianjin China
Brand	WL
Standard	GB/T 3639
Material grade	10#, 20#, 35#, 45#, 25Mn, 25CrMo, etc.
Out diameter	10.3mm-323.9mm
Wall thickness	0.5mm-25mm
Length	3m-12m or customized length
Technique	Cold drawn or cold rolled
Delivery condition	Normalization condition or annealing condition

 

Mechanical properties

Grade	+A(a)		+N
	Tensile strength,min(Mpa)	Elongation,min(%)	Tensile strength(Mpa)	Yield strength,min(Mpa) (b)	Elongation,min(%)
10#	355	24	320-450	215	27
20#	390	21	440-570	255	21
35#	510	17	≧460	280	21
45#	590	14	≧540	340	18
25Mn	490	18	-	-	-

Note: +A: Normalization +N: Annealing

(a) Yield strength ≧ 0.5 Tensile strength

(b) For steel pipes with outer diameter not greater than 30mm and wall thickness not more than 3mm, the minimum yield strength can be reduced by 10 MPa.

 

Product show

 

Product inspection

In order to ensure the quality of our products, we have professional quality test team to control quality.

 

Application

1. Hydraulic system: GB/T 3639 cold drawn seamless steel tube is used for hydraulic system piping, such as high-pressure oil pipes and hydraulic oil pipes.

2. Automotive manufacturing: Used for automotive piping, replacing imported precision seamless steel pipes of the same standard

3. Construction Machinery: Used for construction machinery, railway locomotives, ships, injection molding machines, die-casting machines, machine tools, diesel engines, etc.

4. Petrochemical industry: used in industries such as petrochemicals, power plants, boiler equipment, etc.

 

Our advantages

1. Convenient transportation: Our company is located in Tianjin, and is less than 10 kilometers away from the Tianjin Port. So convenient for loading and transportation.

2. Adequate inventory: Our inventory is sufficient and can be shipped in a short time.

3. Customized service: We can provide professional customized service to clients according to clients' requirements.

4. Integrity management: We maintain good long-term cooperative relationships with world-famous manufacturers. Integrity is our creed.

5. Rich experience: Export experience for many years.

 

About us

 

FAQ

Q: Can you provide some samples? Any charge?

A: We can provide free samples to clients, but the transportation costs not be included.

Q: Do you have own factory?

A: Yes, we have our own factory and welcome to your visit at any time.

Q: How is the quality of your products?

A: Our products are manufactured strictly according to production standard and each one is carefully inspected before delivery.

Q: Can I visit your factory?

A: Of course, warmly welcome to your visit at any time. Please let us know your schedule and we will pick you up.

Hot Tags: gb/t 3639 cold drawn seamless steel tubes for precision applications China, manufacturers, suppliers, factory, high quality, buy, A106 Seamless Carbon Steel Pipe, API 5L B Seamless Steel Pipe, ASTM A269 Stainless Steel Tubes, JIS G3444 Structural Steel Pipe, JIS G3454 Carbon Steel Seamless Steel Pipe, metal tube