DIN 2391 Seamless Precision Seamless Steel Tubes

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of din 2391 seamless precision seamless steel tubes in China, featured by quality products and low price. If you're going to wholesale durable din 2391 seamless precision seamless steel tubes made in China, welcome to get pricelist and free sample from our factory.

 

Introduction

DIN 2391 seamless steel tube is a type of high precision seamless steel tube, which has high precision and smooth surface. DIN 2391 seamless precision steel tube is made through cold drawn process. Cold drawn process reduces the outer diameter and wall thickness of steel tubes synchronously, resulting in significant work hardening and grain refinement. DIN 2391 seamless precision steel tubes will undergo Phosphating during manufacturing, which forms a layer of protection film on the surface of steel tubes, improving the corrosion resistance and expanding service life of steel tubes.

 

Features of DIN 2391 Seamless Precision Steel Tube

1. High dimension precision: DIN 2391 seamless precision steel tube is made through cold drawn process, which gives it high dimension precision. The tolerance on outer diameter can reach ±0.05mm, and the tolerance on wall thickness can reach ±5% WT.

2. High surface finish: The internal and external surfaces of steel tubes is smooth, no burr, and no pit. The surface roughness is less than 0.8 um (Ra≤0.8 um), which meets the requirements of the hydraulic systems and dose not require secondary polishing.

3. Good corrosion resistance: DIN 2391 seamless steel tube undergoes Phosphating during manufacturing, without oxidation layer on internal and external surfaces, which can improve the corrosion resistance of steel tubes.

 

Specifications

Product name	DIN 2391 Seamless Precision Steel Tubes
Place of origin	China
Standard	DIN 2391
Steel grades	St35, St45, St52
Technique	Cold drawn process
Outer diameter	4mm-260mm
Wall thickness	0.5mm-25mm
Length	3m-12m or customized length
Surface treatment	Black Phosphating
Pipe ends	Plain ends, Bevel ends, etc.

 

Steel grades and Chemical compositions %

Steel grade	C,max	Si,max	Mn	P,max	S,max
St 35	0.17	0.35	≥0.40	0.025	0.025
St 45	0.21	0.35	≥0.40	0.025	0.025
St 52	0.22	0.55	≤1.60	0.025	0.025
Note: The following alloying elements may be added: Nb: ≤0.03%; Ti: ≤0.03%; V: ≤0.05%; Nb+Ti+V: ≤0.05%

 

Product show

In order to improve the corrosion resistance, steel  tubes undergo Phosphating process to form a layer of black protection film on the surface.

 

 

Applications

1. Hydraulic systems: DIN 2391 seamless precision steel tube is widely used in hydraulic systems. Its high dimension precision and smooth surface meets the high requirements of hydraulic systems.

2. Automobile industry: In automobile manufacturing, DIN 2391 seamless steel pipe is used for automotive components, braking systems, steering systems, etc., to ensure the high performance and safety of automobiles

3. Other machine parts: Due to its high dimension precision and excellent mechanical properties, DIN 2391 seamless steel tube is also used for manufacturing of machine parts.

 

 

Our advantages

1. Large inventory: We have sufficient inventory to meet clients' requirements. Here you can quickly find the products you want.

2. Fast delivery: After receiving your detailed requirements, we can rapidly prepare the goods from stock, and can pick them up from other factories. The delivery is very fast.

3. High quality and best price: We always do our best to provide best quality products, and our prices are very competitive.

4. Small order and trial order can be accepted by us.

5. Service in place: We offer best customer service. Customer first is our service tenet.

 

 

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