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Automotive Cold Drawn Tubes Precision Steel Tubes For Car Exhaust System

Good quality DOM Steel Tube for sales
Good quality DOM Steel Tube for sales
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Automotive Cold Drawn Tubes Precision Steel Tubes For Car Exhaust System

China Automotive Cold Drawn Tubes Precision Steel Tubes For Car Exhaust System supplier

Large Image :  Automotive Cold Drawn Tubes Precision Steel Tubes For Car Exhaust System

Product Details:

Place of Origin: ZHEJIANG, CHINA
Brand Name: TORICH
Certification: ISO9001, ISO14001, TS16949
Model Number: ASTM A312

Payment & Shipping Terms:

Minimum Order Quantity: 7 Tons
Packaging Details: Tubes are packed in wooden boxes or hexagonal bundles.
Delivery Time: 30-45 work days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 2000Tons per Year
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Detailed Product Description
Keyword: Stainless Steel Exhaust Tubing Material: 316L/304/304L/310S
OD: 34 - 127 Mm WT: 0.8 - 2.5 Mm
Length: Max 12000mm Technique: SEAMLESS Or WELDED
Application: Car Exhaust System Surface Finish: Polishing




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 path Admission deviation
<25 ±0.10
≥25~38.1 ±0.15
>38.1~50 ±0.20
≥50~63.5 0.25
>63.5~76 ±0.30
≥76~102 ±0.40
Outside path Admission 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 number Card number The heat handles
Make degree
The anti- pulls the strength
Accept defeat the strength
Extension rate% Degree of hardnessHRB
0Cr19N19 304 ≥1010°C
Nasty and cold
≥520 ≥205 40 ≤90
00Cr19Ni11 304L " " ≥480 ≥175 40 ≤90
0Cr17Ni12M02 316 " " ≥520 ≥205 40 ≤90
0Cr17Ni14M02 316L " " ≥480 ≥175 40 ≤90
0Cr18Ni11Ti 321 ≥920°C
Nasty and cold
≥520 ≥205 40 ≤90



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.


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

Contact Details

Contact Person: Jasmine Zhang

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