Company Details
  • Torich International Co.,Ltd--The Steel Tube Maker

  •  [Zhejiang,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:GB, ISO9001, ISO14001
  • Description:Cold Drawn Pipe,Cold Drawn Welded Steel Pipe,Auto Cold Drawn Welded Steel Pipe
Torich International Co.,Ltd--The Steel Tube Maker Cold Drawn Pipe,Cold Drawn Welded Steel Pipe,Auto Cold Drawn Welded Steel Pipe
Home > Products > Automotive Steel Tube > Auto Exhaust System Cold Drawn Welded Steel pipe

Auto Exhaust System Cold Drawn Welded Steel pipe

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    Unit Price: USD 1200 / Ton
    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 1 Ton
    Delivery Time: 35 Days

Basic Info

Model No.: JIS 3445 STKM11A

Type: Welded, Welded

Certification: API, CE, BSI, UL

Application: Gas Pipe, Hydraulic Pipe

Section Shape: Round

Surface Treatment: Oiled

Usage: Machinery Industry, Auto Exhaust System

Technique: Cold Drawn

Material: Carbon Steel, Carbon Steel

Product Name: STKM11A Auto Exhaust System Welded Steel Pipe


Surface: Oiled

Shape: Round

Length: 2-12m

Additional Info

Packaging: In bundles In wooden boxes

Productivity: 60000 Tons per Year


Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 60000 Tons per Year

Certificate: ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 ABS DNV

HS Code: 7306301100

Port: Ningbo,Shanghai

Product Description

STKM11A Auto Exhaust System Welded Steel Pipe

application Automobile and motorcycle Shock Absorber Pipe
Hydraulic-cylinder Pipe
Mechanical steel pipes for auto and motor parts
Gas Spring pipe
motor Casing Pipe




material STKM11A
Production process ordinary high-frequency welded pipe
Advantages small diameter and thick wall
Surface Quality The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation
Inspection items

chemical composition

Tensile test

Ultrasonic examination

Eddy current flaw detection

Bending test

Flattening test

Permissible Tolerance of Outer Diameter and Wall Thickness (mm)

Type of steel Tube Dimension of steel tube Permissible tolerance
Average class High class


(extruded and expanded) tube

Outer diameter D All ±1%
Wall thickness All +15%/-12.5%
Cold-drawn (cold-rolled) tube Outer diameter D 6~10 ±0.2 ±0.15
>10~30 ±0.40 ±0.20
>30~50 ±0.45 ±0.30
>50 ±1% ±0.8%
Wall thickness <1 ±0.15 ±0.12
>1~3 +15%
>3 +12.5%
Note: For hot-expanded tubes with outer diameter>35mm,the permissible tolerance of wall thickness is±18%.

Longitudinal Mechanical Properties of Steel Tubes

NO. Steel Grade Tensile Strength(Mpa) Yield point(Mpa) Elongation after breaking(%)
s<16 s>16
Not less than
1 10 335~475 205 195 24
2 20 410~550 245 235 20
3 Q295 430~610 295 285 22
4 Q345 490~665 325 315 21

Permissible deviations of the product analysis from the specified limits

Element Limiting values for cast analysis Permissible deviatioon of the product analysis in % by mass
C ≤0.22 +0.02
Si ≤0.55 +0.05
Mn ≤1.60 +0.10
P ≤0.025 +0.005
S ≤0.015 +0.003
Al ≥0.025 -0.005

What is your Guarantee?
1.SO9001:2008 and TS16949 certification, SGS, BV, TUV or other third party inspection is available.
2.High quality with competitive price.
3.Advanced technology, experienced engineer, ISO quality system for quality assurance and traceability.

Do you have agent or distributor in our country?
1.We are recruiting area agent and distributor all over the world, welcome to send us your mail or call us for detail discussion.

How is your production capability?
1.2000 tons monthly production capacity, 5000 tons monthly trading capability
2.Prompt and Timely shipment
How to get the sample?
1.You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2.Sample charges will be refunded when order is placed.
What is your Payment Term?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Who are your customers?
1.Stockists, Distributors,Wholesalors,Agents, Traders, End Users, etc

How long will you react on our requirement?
1.Your requirement would be treated within 24 hours on weekdays. Quotations would be sent upon technical details confirmed by customer!

Any more questions about your doubts, please feel free to send us your emails or call!

Looking for ideal Cold Drawn Pipe Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Cold Drawn Welded Steel Pipe are quality guaranteed. We are China Origin Factory of Auto Cold Drawn Welded Steel Pipe. If you have any question, please feel free to contact us.

Product Categories : Automotive Steel Tube

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  • Auto Exhaust System Cold Drawn Welded Steel pipe
  • Auto Exhaust System Cold Drawn Welded Steel pipe
  • Auto Exhaust System Cold Drawn Welded Steel pipe
  • Auto Exhaust System Cold Drawn Welded Steel pipe
  • Auto Exhaust System Cold Drawn Welded Steel pipe
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