Automotive Exhaust Pipe Parts Durable SS316 304 /409L Stainless Steel Perforated Tubing

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Product Description

Basic Specifications
Type
Seamless
Technique
Cold Rolled
Material
Carbon Steel
Surface Treatment
Oiled / Chromated
Section Shape
Round
As Coating
As80-As300
Thickness
0.3-4.0mm
Width
6-1600mm
Capacity
2000ton/Month
Origin
China
Stainless Steel Perforated Tubing for Auto Exhaust

Precision Meets Performance: SUS 436, SUS409, AISI441, 1.4509, SS304, SS316L

Stainless Steel Perforated Tubing 1
Stainless Steel Perforated Tubing 2
Perforated Detail 1
Perforated Detail 2
Perforated Detail 3
Tubing View 1
Tubing View 2
Tubing View 3
Technical Specifications
Item Details
GradesGB, AISI, ASTM, DIN, EN, SUS, UNS (304, 304L, 316, 316L, 409, 2205, etc)
Outer Diameter (OD)19-248mm
Wall Thickness0.2mm to 15mm
ToleranceOD ±0.1mm; Thickness ±10%; Length ±5mm
ProcessingCustom hole patterns based on customer drawings; shrinking and expanding
InspectionUnderwater airtightness test, Online eddy current testing
Common Sizes1", 1.25", 1.5", 10", 12mm ID, 13mm ID and more
Specification Overview
Core Advantages
1
Advanced Manufacturing: Equipped with automatic ring welding, wave expansion, bending, and straightening machines. 100% pressure test (8kg for 15s) ensures zero leakage and no porosity.
2
Premium Raw Materials: Sourced from top-tier suppliers like POSCO and TISCO. Pipes undergo integral solid solution treatment to eliminate internal weld traps.
3
Precision Welding: Utilization of Argon arc and Plasma welding techniques for superior joint strength and aesthetics.
Bending Test
(A) Steel Pipe Bending Test
Flattening Test
(B) Flattening Test
Flaring Test
(C) Flaring Test
Online Annealing & Quality Control
Online Annealing

Annealing Advantages:

  • Reduces hardness and improves elongation of the pipe.
  • Prevents deformation and weld seam cracking during bending.
  • Enhances steel properties for subsequent heat treatment.
Packaging & Logistics

Space-Saving Loading: We assist customers by inserting smaller tubes into larger tubes, maximizing container space and significantly reducing freight costs.

Packaging Solution
Frequently Asked Questions (FAQ)
Q1: What materials are available for the perforated tubing?
A: We offer a wide range of materials including SUS 436, SUS409, AISI441, 1.4509, SS304, and SS316L, catering to various corrosion resistance and heat requirements.
Q2: Can you provide custom hole patterns and sizes?
A: Yes, we process various hole configurations and tube sizes (expanding or shrinking) based strictly on customer technical drawings and requirements.
Q3: How do you ensure the pipes do not leak?
A: Every single piece undergoes a 100% pressure detection test at 15 kg for 15 seconds, along with underwater airtightness and online eddy current testing.
Q4: What is the benefit of the online annealing process?
A: Online annealing reduces the pipe's hardness and improves its elongation, which is critical for preventing cracks or deformations during complex bending processes.
Q5: How do you optimize shipping costs for large orders?
A: We use a "tube-in-tube" packaging method where smaller diameter pipes are nested inside larger ones to maximize container volume and save on freight expenses.
Q6: Are the pipes suitable for automotive exhaust systems?
A: Absolutely. Our perforated tubing is specifically engineered for auto exhaust systems, car mufflers, and other high-performance pipeline transport applications.

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