Stainless Steel Coil Tube — 90° Flange Flanging Test Qualified
Product Overview
Wenzhou Jixing Metal Materials Co., Ltd. supplies high-performance stainless steel coil tubes engineered to meet rigorous end-formability standards. The hallmark quality attribute of this product line is its certified 90° Flange Flanging Test performance — a critical inspection criterion that validates the end-face ductility, edge integrity, and overall formability of the tube. This capability ensures reliable adaptation to flange flanging connection processes, making these coil tubes an ideal choice for applications demanding precision end-joining and superior mechanical integrity.
Material & Properties
- Base Material: Austenitic stainless steel (grades such as 304, 304L, 316, 316L, 321, 310S, and custom alloys available upon request)
- End-Face Ductility: Demonstrates excellent plastic deformation capacity at the tube end, as verified by the 90° flanging test without cracking, tearing, or edge separation
- Edge Quality: Smooth, defect-free tube ends with uniform wall thickness distribution, ensuring consistent flanging results across the full production batch
- Corrosion Resistance: Superior resistance to oxidation and chemical attack, suitable for aggressive process environments
- Mechanical Strength: Maintains tensile and yield strength even after cold-forming operations, preserving structural integrity post-flanging
Specifications
| Parameter | Specification |
|---|---|
| Outer Diameter (OD) | 3 mm – 250 mm (custom sizes available) |
| Wall Thickness | 0.3 mm – 10 mm |
| Coil Length | Standard coil or custom cut lengths per customer requirement |
| Flanging Angle | 90° (certified) |
| Flanging Diameter Ratio | Minimum 1.3× OD without cracking or edge failure |
| Surface Finish | Pickled & Passivated (P&P), BA (Bright Annealed), or polished |
| Applicable Grades | 304, 304L, 316, 316L, 321, 310S, 2205 Duplex, 904L, and custom |
| Standards Referenced | ASTM A213/A269, ASTM A778, EN 10216-5, GB/T 14976 |
Manufacturing Process
- Raw Material Selection: High-purity stainless steel strip sourced from certified mill producers, with full chemical composition traceability.
- Coil Forming: Precision cold-rolling and coil winding to achieve tight dimensional tolerances on OD and wall thickness, ensuring uniformity essential for successful flanging.
- Heat Treatment (if applicable):
Stainless Steel Coil Tube — 90° Flange Flanging Qualified
Product Overview
Wenzhou Jixing Metal Materials Co., Ltd. presents a premium-grade stainless steel coil tube engineered for superior end-face formability and edge integrity. This product line is specifically validated through the 90° Flange Flanging Test, a critical quality inspection that confirms the tube's capacity to undergo cold flanging without cracking, tearing, or edge separation. The result is a coil tube solution that delivers exceptional reliability for flange flanging connection processes, ensuring seamless integration into piping systems, heat exchangers, and pressure vessels.
Material & Properties
- Base Material: Austenitic stainless steel grades including 304, 304L, 316, 316L, 321, 310S, and custom alloys
- End-Face Ductility: Demonstrates excellent plastic deformation capacity at the tube end, as verified by the 90° flanging test
- Edge Quality: Smooth, defect-free tube ends with uniform wall thickness distribution, ensuring consistent flanging results across the full production batch
- Corrosion Resistance: Superior resistance to oxidation and chemical attack, suitable for aggressive process environments
- Mechanical Strength: Maintains tensile and yield strength even after cold-forming operations, preserving structural integrity post-flanging
Specifications
Parameter Specification Outer Diameter (OD) 3 mm – 250 mm (custom sizes available) Wall Thickness 0.3 mm – 10 mm Coil Length Standard coil or custom cut lengths per customer requirement Flanging Angle 90° (certified) Flanging Diameter Ratio Minimum 1.3× OD without cracking or edge failure Surface Finish Pickled & Passivated (P&P), BA (Bright Annealed), or polished Applicable Grades 304, 304L, 316, 316L, 321, 310S, 2205 Duplex, 904L, and custom Standards Referenced ASTM A213/A269, ASTM A778, EN 10216-5, GB/T 14976 Manufacturing Process
- Raw Material Selection: High-purity stainless steel strip sourced from certified mill producers, with full chemical composition traceability.
- Coil Forming: Precision cold-rolling and coil winding to achieve tight dimensional tolerances on OD and wall thickness, ensuring uniformity essential for successful flanging.
- Heat Treatment (if applicable): Controlled annealing to relieve residual stresses and optimize the microstructure for maximum cold-workability at the tube end.
- End Finishing: Precision cutting and deburring of coil tube ends to produce smooth, burr-free surfaces that facilitate uniform material flow during flanging.
- 90° Flange Flanging Inspection: Each production lot undergoes a standardized 90° flanging test on representative samples. The tube end is formed to a 90° angle using a calibrated flanging die; the resulting flange is inspected for cracks, splits, or edge imperfections. Only lots passing this test are released for shipment.
- Final Quality Control: Comprehensive dimensional, mechanical, and surface inspection prior to packaging and dispatch.
Key Selling Points
- Certified 90° Flanging Performance: Every coil tube lot is verified through the 90° flange flanging test, guaranteeing end-face ductility and edge quality that meet or exceed industry standards.
- Flange Flanging Connection Readiness: The product is specifically validated for flange flanging connection processes, eliminating the risk of field-fabrication failures and reducing assembly costs.
- Batch-to-Batch Consistency: Rigorous process control ensures uniform flanging performance across all production runs, providing reliability for high-volume manufacturing applications.
- Wide Grade Availability: From standard austenitic grades to high-alloy and duplex stainless steels, customers can source coil tubes tailored to their specific corrosion and mechanical requirements.
- Traceability & Documentation: Full material traceability with mill test certificates (MTC), flanging test reports, and dimensional inspection records provided with every shipment.
Applications
- Pressure Vessels & Piping Systems: Tubes requiring flange flanging connections in high-pressure process lines
- Heat Exchangers & Boilers: Coil tubes where end-formability is critical for tube-sheet mounting and gasket sealing
- Automotive & Aerospace: Fuel lines, hydraulic lines, and exhaust systems requiring reliable flanged joints
- Food & Pharmaceutical Processing: Sanitary piping systems where flanging connections ensure leak-free, hygienic assemblies
- Chemical & Petrochemical Industry: Corrosive process environments demanding both formability and chemical resistance
Quality Certifications
- ISO 9001:2015 Quality Management System Certified
- Mill Test Certificate (MTC) EN 10204 3.1 provided per shipment
- Compliant with ASTM A213/A269, ASTM A778, EN 10216-5, and GB/T 14976
- Third-party inspection available (SGS, BV, TUV) upon customer request
- 90° Flange Flanging Test Report included with each production lot
Note: The 90° flange flanging test serves as the definitive verification of end-face ductility and edge quality. Wenzhou Jixing Metal Materials Co., Ltd. ensures that every coil tube delivered to customers has passed this critical inspection, providing confidence in flange flanging connection performance and overall product reliability.