Standard Stainless Steel Coil Tube — Industrial-Grade Coiled Tubing for Mass Production
Product Overview
Wenzhou Jixing Metal Materials Co., Ltd. offers high-quality stainless steel coil tubes engineered for large-scale industrial manufacturing and processing operations. Delivered in standardized coil configurations, these products provide continuous-length tubing that eliminates the need for field welding during fabrication, reducing labor costs and improving structural integrity across production runs.
The standard coil format is designed with a minimum inner diameter (ID) of 600 mm and a maximum outer diameter (OD) of 1,200 mm, ensuring compatibility with automated handling systems including forklifts and overhead cranes. This standardized logistics dimension enables seamless integration into modern supply chains, minimizing loading time and maximizing transport efficiency.
Key Advantage: The standardized coil geometry (ID ≥ 600 mm, OD ≤ 1,200 mm) ensures universal compatibility with standard industrial handling equipment, reducing logistics complexity and accelerating delivery timelines.
Material & Properties
Stainless steel coil tubes are manufactured from premium austenitic and ferritic stainless steel grades, selected to deliver optimal combinations of corrosion resistance, mechanical strength, and formability. The following material grades are available upon request:
- 304 / 304L — General-purpose corrosion resistance for chemical, food, and pharmaceutical applications
- 316 / 316L — Superior chloriding and acid resistance for marine and chemical processing environments
- 321 / 347 — Stabilized grades for high-temperature service in heat exchangers and exhaust systems
- 430 / 444 — Cost-effective ferritic grades for atmospheric and mild corrosive environments
All coil tubes are supplied in the annealed and pickled condition unless otherwise specified, ensuring uniform microstructure, excellent surface finish, and maximum ductility for downstream forming operations.
Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Coil Inner Diameter (ID) | ≥ 600 mm (≥ 23.6 in) | Standard minimum for forklift/crane handling |
| Coil Outer Diameter (OD) | ≤ 1,200 mm (≤ 47.2 in) | Standardized for logistics compatibility |
| Tube Outer Diameter | 6.00 – 219.00 mm (0.24 – 8.62 in) | Custom dimensions available upon request |
| Wall Thickness | 0.50 – 6.00 mm (0.020 – 0.236 in) | Dependent on tube OD and grade |
| Coil Length | Custom (typically 500 – 3,000 m) | Configured per customer production requirements |
| Surface Finish | Pickled & Passivated, BA, or No. 4 | Custom surface finishes available |
| Manufacturing Method | Seamless or Welded (ERW / ARG) | Selected based on application requirements |
| Handling Compatibility | Forklift / Overhead Crane | Standard industrial logistics equipment |
| Applicable Standards | ASTM A213, ASTM A269, EN 10216-5, GB/T 12771 | Multi-standard compliance available |
Manufacturing Process
Wenzhou Jixing Metal Materials Co., Ltd. employs a fully integrated manufacturing process to ensure consistent quality and dimensional accuracy across every coil tube production run:
- Raw Material Selection: Virgin stainless steel billets and strip are sourced from certified mills with full mill test certificates (MTC) traceable to heat number.
- Forming & Welding (if applicable): High-precision rolling mills shape the strip into tube geometry; welded variants utilize automatic submerged arc welding (ASAW) or orbital gas tungsten arc welding (OGTAW) for seam integrity.
- Heat Treatment: Tubes are solution-annealed at controlled temperatures (typically 1,050–1,150 °C / 1,922–2,092 °F) followed by rapid water quenching to achieve full austenitic structure.
- Pickling & Passivation: Acid pickling removes oxide scale; subsequent passivation treatment establishes a protective chromium oxide film for maximum corrosion resistance.
- Dimensional Inspection: Automated optical and ultrasonic inspection systems verify OD, wall thickness, and coil dimensions against specification tolerances.
- Coiling & Packaging: Tubes are coiled to standardized dimensions (ID ≥ 600 mm, OD ≤ 1,200 mm) and secured with steel strapping, protective wrapping, and wooden pallets for safe transit.
Applications
Standard stainless steel coil tubes are widely deployed across industries that require continuous-length tubing for high-volume fabrication:
- Automotive Industry: Exhaust systems, turbocharger housings, fuel delivery lines, and HVAC components
- Oil & Gas: Downhole tubing, subsea flow lines, and refinery process piping
- Food & Beverage Processing: Hygienic piping, pasteurization systems, and CIP (Clean-in-Place) equipment
- Pharmaceutical Manufacturing: Bioreactor piping, steam distribution, and clean-in-place systems requiring sanitary finishes
- Construction & Architecture: Structural supports, decorative railings, and facade elements
- Heat Exchanger Manufacturing: Tube bundles for shell-and-tube and plate-fin heat exchangers
- Appliance Industry: Refrigerator evaporator tubes, washing machine drums, and dryer components
Quality Certifications
Wenzhou Jixing Metal Materials Co., Ltd. maintains rigorous quality management systems and holds the following certifications:
- ISO 9001:2015 — Quality Management System certification ensuring consistent product quality and process control
- ISO 14001 — Environmental Management System certification for sustainable manufacturing practices
- EN 10204 3.1 — Third-party inspected material certificates provided with every shipment
- NACE MR0175 / ISO 15156 — Compliance for sour service applications (available upon request)
- Mill Test Certificates (MTC): Full chemical analysis and mechanical property reports traceable to each production heat
Unique Selling Points
- Standardized Logistics Dimensions: The ID ≥ 600 mm / OD ≤ 1,200 mm coil format is universally compatible with forklifts and cranes, eliminating the need for specialized handling equipment and reducing shipping costs.
- Continuous-Length Supply: Coil format eliminates butt welds, reducing material waste by up to 15% and improving production throughput for downstream fabricators.
- Multi-Grade Availability: Comprehensive range of stainless steel grades in a single coil format simplifies procurement and inventory management.
- Full Traceability: Every coil is accompanied by complete MTC documentation with heat-level traceability for regulatory compliance and quality assurance.
- Custom Configuration: Tube dimensions, surface finishes, coil lengths, and packaging are customizable to meet specific customer production requirements.