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Jiaxing Stainless Steel Welded Pipe
QS Pipe: Jiaxing Stainless Steel Welded Pipe
Name: Jiaxing Stainless Steel Welded Pipe
Standard: ASME B36.19M
Type: Welded
Material: Stainless Steel
Size: 38 mm
Wall Thickness: 2.0 mm
Application: Used for various industrial fields, such as petroleum, chemical engineering, food processing, etc.
Standard: ASME B36.19M
Type: Welded
Material: Stainless Steel
Size: 38 mm
Wall Thickness: 2.0 mm
Application: Used for various industrial fields, such as petroleum, chemical engineering, food processing, etc.
Quantity
Stainless Steel Welded Pipe (ASME B36.19M Standard, OD 38mm, Wall Thickness 2.0mm)
Stainless Steel Welded Pipe is manufactured from premium-grade 304 stainless steel, combining high strength with exceptional corrosion resistance. Precision welding processes ensure superior sealing performance and durability, making it ideal for demanding applications in petroleum, chemical, and food processing industries. Its lightweight design facilitates easy installation while meeting high-efficiency fluid transfer requirements, establishing it as the preferred choice for industrial piping systems.
The forming and welding processes of Stainless Steel Welded Pipe directly impact its performance, dimensional accuracy, and service life. Common welding methods include High-Frequency Welding (ERW), Tungsten Inert Gas Welding (TIG), and Laser Welding, each suited for different specifications and applications.
1. High-Frequency Welding (ERW – Electric Resistance Welding)
(1) Process Principle
ERW utilizes the skin effect and proximity effect of electric current to heat and fuse the edges of Stainless Steel Welded Pipe strips under pressure, without filler material.
(1) Process Principle
ERW utilizes the skin effect and proximity effect of electric current to heat and fuse the edges of Stainless Steel Welded Pipe strips under pressure, without filler material.
(2) Process Details
- Forming Stage: Cold-rolled 304 stainless steel coils are shaped into tubular form via roll-forming dies.
- Welding Stage: High-frequency current (100–400 kHz) heats the pipe edges to 1200–1300°C, followed by pressure bonding.
- Cooling & Sizing: The weld seam is water-cooled and calibrated to ensure dimensional precision of Stainless Steel Welded Pipe.
- Forming Stage: Cold-rolled 304 stainless steel coils are shaped into tubular form via roll-forming dies.
- Welding Stage: High-frequency current (100–400 kHz) heats the pipe edges to 1200–1300°C, followed by pressure bonding.
- Cooling & Sizing: The weld seam is water-cooled and calibrated to ensure dimensional precision of Stainless Steel Welded Pipe.
(3) Technical Features
- Applicable Specifications: OD 10–500 mm, wall thickness 0.5–8 mm.
- Efficiency: Welding speeds of 20–100 m/min, ideal for mass production.
- Applicable Specifications: OD 10–500 mm, wall thickness 0.5–8 mm.
- Efficiency: Welding speeds of 20–100 m/min, ideal for mass production.
(4) Limitations
- Requires pickling to remove weld oxides.
- Not suitable for ultra-thin or high-purity pipes.
- Requires pickling to remove weld oxides.
- Not suitable for ultra-thin or high-purity pipes.
2. Tungsten Inert Gas Welding (TIG)
(1) Process Principle
TIG welding employs a non-consumable tungsten electrode and inert gas shielding to produce high-purity welds for Stainless Steel Welded Pipe.
(1) Process Principle
TIG welding employs a non-consumable tungsten electrode and inert gas shielding to produce high-purity welds for Stainless Steel Welded Pipe.
(2) Process Details
- Pre-treatment: Pipe edges are milled for smooth alignment.
- Shielding: Argon gas protects the weld zone from oxidation.
- Welding Methods: Single-side welding with back penetration or multi-pass layering.
- Pre-treatment: Pipe edges are milled for smooth alignment.
- Shielding: Argon gas protects the weld zone from oxidation.
- Welding Methods: Single-side welding with back penetration or multi-pass layering.
(3) Technical Features
- Applicable Specifications: OD 6–300 mm, wall thickness 0.3–6 mm.
- Quality Certification: Radiographic testing pass rate ≥98%, compliant with food-grade (Ra ≤ 0.8 μm) and nuclear standards.
- Applicable Specifications: OD 6–300 mm, wall thickness 0.3–6 mm.
- Quality Certification: Radiographic testing pass rate ≥98%, compliant with food-grade (Ra ≤ 0.8 μm) and nuclear standards.
(4) Typical Applications
- High-pressure chemical pipelines, dairy equipment, and other high-purity Stainless Steel Welded Pipe applications.
- High-pressure chemical pipelines, dairy equipment, and other high-purity Stainless Steel Welded Pipe applications.
3. Laser Welding
(1) Process Principle
Laser welding achieves micron-level precision joints for Stainless Steel Welded Pipe using a high-energy beam.
(1) Process Principle
Laser welding achieves micron-level precision joints for Stainless Steel Welded Pipe using a high-energy beam.
(2) Process Details
- Alignment: CCD vision systems monitor seams (error ≤ 0.1 mm).
- Shielding Gas: Nitrogen or argon prevents oxidation.
- Modes: Keyhole welding (thick walls) or conduction welding (thin walls).
- Alignment: CCD vision systems monitor seams (error ≤ 0.1 mm).
- Shielding Gas: Nitrogen or argon prevents oxidation.
- Modes: Keyhole welding (thick walls) or conduction welding (thin walls).
(3) Technical Features
- Applicable Specifications: OD 2–150 mm, wall thickness 0.1–4 mm.
- Heat Control: Heat-affected zone < 0.5 mm, ideal for precision components.
- Applicable Specifications: OD 2–150 mm, wall thickness 0.1–4 mm.
- Heat Control: Heat-affected zone < 0.5 mm, ideal for precision components.
(4) High-End Applications
- Medical devices, semiconductor equipment, and other industries requiring stringent purity and precision for Stainless Steel Welded Pipe.
- Medical devices, semiconductor equipment, and other industries requiring stringent purity and precision for Stainless Steel Welded Pipe.
Process Comparison & Selection Guide
| Parameter | ERW | TIG | Laser Welding |
| Wall Thickness | 0.5–8 mm | 0.3–6 mm | 0.1–4 mm |
| Applications | Structural/ fluid pipes | Food/ chemical pipes | Medical/semiconductor Stainless Steel Welded Pipe |
Conclusion: ERW is cost-effective for Stainless Steel Welded Pipe mass production, TIG meets high-purity demands, and laser welding serves ultra-precision fields. Users should select based on budget and industry standards.
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