Corrosion-Resistant SS316 304/409L Stainless Steel Perforated Tubing for Car Exhaust Pipe

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Product Description

Basic Specifications

Model NO.
KS-SSPT
Type
Seamless
Technique
Cold Rolled
Material
Carbon Steel / Stainless Steel
Surface Treatment
Oiled / Chromated
Section Shape
Round
As Coating
As80-As300
Thickness
0.3-4.0mm
Width
6-1600mm
Aluminium Content
90%
Origin
China
Capacity
2000ton/Month

Product Description

SUS 436 SUS409 AISI441 1.4509 1.4301 SS304 SS316L Stainless Steel Perforated Tubing For AUTO Exhaust Tubing

Stainless Steel Perforated Tubing 1
Stainless Steel Perforated Tubing 2

Precision Perforated Steel Pipe Performance

Perforated Pipe Detail 1
Perforated Pipe Detail 2
Perforated Pipe Detail 3
Product Variety 1
Product Variety 2
Product Variety 3

Technical Specifications

Item Details
GradesGB, AISI, ASTM, DIN, EN, SUS, UNS (304, 316L, 409, 2205, etc.)
Outer Diameter (OD)19-248mm
Wall Thickness0.2mm to 15mm
ToleranceOD ±0.1mm; Thickness ±10%; Length ±5mm
ProcessingCustom hole patterns, shrinking, and expanding
InspectionUnderwater airtightness test, Online eddy current testing
Available Sizes1", 1.25", 1.5", 10", 12mm ID, 13mm ID and more
Specification Banner

Manufacturing Advantages

1) Advanced Manufacturing Facility: Equipped with automatic ring welding machines, semi-automatic wave expansion machines, bending, flaring, and straightening equipment. We ensure 100% pressure tests (8kg for 15s) to guarantee zero leakage and no porosity.

2) Strict Process Requirements: Raw materials are sourced from top-tier suppliers like POSCO and TISCO. Pipes undergo integral solid solution treatment. We strictly control OD tolerance and weld residual height to eliminate internal weld traps.

Bending Test
Flattening Test
Flaring Test

Argon Arc & Plasma Welding

Welding Process 1
Welding Process 2
Welding Process 3

Online Annealing Benefits

Online Annealing
  • Reduces hardness and improves pipe elongation.
  • Prevents deformation and weld seam cracking during bending.
  • Optimizes steel properties for subsequent heat treatments.

Quality Assurance & Packaging

Material Test Certificate

Space-Saving Packaging: We utilize professional techniques like inserting smaller tubes into larger tubes to maximize container space and reduce freight costs for our customers.

Tube Packaging

Frequently Asked Questions

What materials are available for the perforated tubing?
We offer a wide range of materials including SUS 304, 316L, 409, 436, AISI 441, and aluminized steel, specifically designed for automotive exhaust systems.
What kind of quality testing do you perform?
Every piece undergoes 100% underwater airtightness testing and online eddy current testing. We also perform 15kg pressure tests for 15 seconds to ensure zero leakage.
Can I request custom sizes or hole patterns?
Yes, we provide full processing services including custom bending, welding, decoiling, cutting, and punching based on your specific drawing requirements.
What is the advantage of online annealing?
Online annealing reduces material hardness and increases elongation, which prevents the weld seam from cracking or the pipe from deforming during complex bending processes.
How do you manage shipping costs for large orders?
To save space and reduce freight charges, we offer specialized packaging where smaller diameter tubes are nested inside larger ones, allowing for maximum container utilization.
What is the typical production capacity for these pipes?
Our current production capacity is approximately 2,000 tons per month, ensuring stable supply for large-scale industrial and automotive projects.

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