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Automotive Cold Drawn Tubes Precision Steel Tubes For Car Exhaust System

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Automotive Cold Drawn Tubes Precision Steel Tubes For Car Exhaust System

Country/Region china
City & Province ningbo zhejiang
Categories Metal Casting Machinery
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Product Details

 

ASTM A312 COLD DRAWN SEAMLESS PRECISION AUTOMOTIVE STEEL TUBES PIPE STAINLESS STEEL EXHAUST TUBING

 

1) Diameters: 4 - 76.2mm
2) W.T.: 0.4 - 2.5mm
3) Grades: 316L/304/304L/310S,etc.

4) standard:GB/ISO/EN/ASTM/JIS,etc.

5) application range:widely use in the foodstuff,medical equipment,power,boiler,cooler,auto,condenser etc.

6) packing: inner packing:1 pc/plastic bag;outer packing:bundles in weaving bags or in plywooden case.

 

Size accuracy


The outside path admission deviation that solder take care of includes the elliptical park a cent Ⅰ , Ⅱ two class, see the table 3, table 4.

 

ⅠOutside path in class deviation mm table 3 Outside path inⅡ class deviation mm table 4
Outside pathAdmission deviation
<25±0.10
≥25~38.1±0.15
>38.1~50±0.20
≥50~63.50.25
>63.5~76±0.30
≥76~102±0.40
 
Outside pathAdmission deviation
≤10±0.15
>10~32±0.20
>32~50±0.30
>50±0.8%
  
  

 

The thick the deviation of admission( do not include the weld sew) in wall of the weld tube is for ruling the wall thick 10% of ±, but minimum admission deviation is the 0.02 mms of ±.
The weld takes care of of settle Chinese foot length as 3 ms~9 ms, general settle the Chinese foot with the 6 ms.

The weld takes care of of settle the Chinese foot length in usually length, its the deviation of admission is the 5 mms of ±.
Adopt partial the degree of flinch in a the tube of weldfor keeping the Chinese foot measurement should not very in 2.0 mms.


2, The machine function sees the table 5                                                                                table 5

Steel numberCard numberThe heat handles
Make degree
The anti- pulls the strength
MPa
Accept defeat the strength
MPa
Extension rate%Degree of hardnessHRB
0Cr19N19304≥1010°C
Nasty and cold
≥520≥20540≤90
00Cr19Ni11304L" "≥480≥17540≤90
0Cr17Ni12M02316" "≥520≥20540≤90
0Cr17Ni14M02316L" "≥480≥17540≤90
0Cr18Ni11Ti321≥920°C
Nasty and cold
≥520≥20540≤90

 

 

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.
 

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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