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DIN2391 GB/T 3639 Cold-drawn or Cold-rolled Seamless Precision Steel Tube

Minimum Order Quantity : 2 tons Price : Negotiable
Packaging Details : Packed in wooden boxes or seaworthy packing. Delivery Time : 25-45 days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 500 Ton/Tons per Month
Place of Origin: China Brand Name: Torich
Certification: ISO Model Number: GB/T 3639, DIN2391

Detail Information

Product Name: DIN2391 GB/T 3639 Cold-drawn Or Cold-rolled Seamless Precision Steel Tube Keyword: Seamless Precision Steel Tube
Technical: Cold Drawn Or Cold Rolled Standard: DIN2391 GB/T 3639
Grade: 10#, 20#, 45#, Q345, E255, E355,etc. Length: As Customer's Require
Thickness: 0.5mm-22mm Outer Diameter(round): 4mm-200mm
High Light:

DIN2391 Precision Steel Tube

,

GB/T 3639 Precision Steel Tube

Product Description

DIN2391 GB/T 3639 Cold-drawn or Cold-rolled Seamless Precision Steel Tube

 

Product name: DIN2391 GB/T 3639 Cold-drawn or Cold-rolled Seamless Precision Steel Tube
Standard: DIN2391-2, EN10305-1, GB/T3639, GB/T8163, GB/T14976, EN10216-5...
Grade: 10#, 20#, 45#, Q345, E255, E355,etc.
Technical: Cold Drawn or Cold Rolled
Size Range:

OD: 4-200 mm

WT: 0.5-22 mm

Or according to customers' actual application and production.

Application: Structural, Machinery,etc.
Inspection items: Chemical composition test, Tensile test, Flattening test, Flaring test, Compactness test , Surface roughness check

 

1.Chemical composition:

Standard Steel Grade C(%) Si(%) Mn(%) S(%) P(%)
DIN 2391 St35 ≤0.17 ≤0.35 ≥0.40 ≤0.025 ≤0.025
St37 ≤0.17 ≤0.35 ≥0.40 ≤0.025 ≤0.025
St37.4 ≤0.17 ≤0.35 ≥0.40 ≤0.025 ≤0.025
St45 ≤0.21 ≤0.35 ≥0.40 ≤0.025 ≤0.025
St44 ≤0.21 ≤0.35 ≥0.40 ≤0.025 ≤0.025
St52 ≤0.22 ≤0.35 ≥1.60 ≤0.025 ≤0.025
 

 

2. Production process:
DIN series tubes, cold drawn and bright annealed precision seamless steel tube is used as the tube to be phosphated.

The phosphorization is realized with the imported chemical fluid to form a black film.

The antirust oil is absorbed by means of the micropore on the film to prevent the tubes from getting rust.

 

3. Main Features:
Bright black color is homogeneously distributed on the tube surface. The tube has good property of antirust.


4. Main Application:

For auto industry, machinery use, oil cylinder, motorcycle shock absorber.


5. Our products are widely used in:
Engineering machinery Machine tool industry Hydraulic industry Special vehicle
Automobile pipeline Heavy machinery Compressor Shipbuilding industry
Railway locomotive Diesel engine Utility boiler Injection molding machine
Power equipment Heavy duty automobile Forging and stamping machine

 

6. Main Characteristics:
No Oxidation Layer on the Outer and Inner Walls, No Crack under Flaring and Flattening
No Leakage under High Pressure,No Distortion after Cold Bending, High Precision High Cleanness Excellent Brightness

 

Product Display of Seamless Precision Steel Tube

 Seamless Precision Steel Tube Seamless Precision Steel Tube

Company Introduction

DIN2391 GB/T 3639 Cold-drawn or Cold-rolled Seamless Precision Steel Tube 2

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Packing and Delivery

DIN2391 GB/T 3639 Cold-drawn or Cold-rolled Seamless Precision Steel Tube 5DIN2391 GB/T 3639 Cold-drawn or Cold-rolled Seamless Precision Steel Tube 6

 

Quality Control

1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking.

quality control
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

 

FAQ

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider.

 

Q: How long is your delivery time?

A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

 

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

 

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

 

If you have another question, pls feel free to contact us

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