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Mr. Richard SHEN
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Mr. Richard SHEN
Torich International Co.,Ltd--The Steel Tube Maker
| 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
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
STEEL GRADE: STKM11A
Surface: Oiled
Shape: Round
Length: 2-12m
Additional Info
Packaging: In bundles In wooden boxes
Productivity: 60000 Tons per Year
Brand: TORICH
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
Typical fields of application are in:
Automobile and motorcycle Shock Absorber Pipe
Hydraulic-cylinder Pipe
Mechanical steel pipes for auto and motor parts
Gas Spring pipe
motor Casing Pipe etc
size:length--2~12m WT--2~5mm OD--10-20mm
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 | |||
| Hot-rolled (extruded and expanded) tube | Outer diameter D | All | ±1% (min.+/-0.50) | - |
| Wall thickness | All | +15%/-12.5% (min.+4.5/-4.0) | - | |
| 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% -10% | +12.5% -10% | ||
| >3 | +12.5% -10% | ±10% | ||
| 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 |
Product Categories : Automotive Steel Tube
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