Industrial-Grade Stainless Steel Coil Tube — Second Tier Domestic Supplier Series
Product Overview
Wenzhou Jixing Metal Materials Co., Ltd is proud to supply premium-grade stainless steel coil tubes sourced from China's leading second-tier domestic manufacturers, including Jiuli (久立), Wujin (武进), Huaxin Lihua (华新丽华), and Yongxing (永兴). These coil tubes represent the backbone of industrial stainless steel procurement in China — offering an exceptional balance of performance, reliability, and cost-efficiency that satisfies the demands of the vast majority of industrial applications across multiple sectors.
Positioned as the "industrial main force" of the domestic stainless steel tubing market, second-tier suppliers have earned widespread industry acceptance through consistent quality output, mature manufacturing capabilities, and competitive pricing structures. Their products meet or exceed international standards while remaining accessible to a broad range of procurement budgets.
Material & Properties
The stainless steel coil tubes in this series are manufactured from high-grade austenitic and ferritic stainless steel grades, delivering superior corrosion resistance, mechanical strength, and thermal stability. Key material characteristics include:
- Corrosion Resistance: Excellent resistance to atmospheric corrosion, acidic environments, and chemical media through a robust passive chromium oxide layer
- Mechanical Strength: High tensile strength and yield strength suitable for pressure-bearing and structural applications
- Thermal Stability: Maintains structural integrity across a wide operating temperature range, from cryogenic to elevated temperatures
- Hygienic Surface: Smooth, non-porous internal and external surfaces that resist bacterial growth and facilitate cleaning
- Weldability: Superior welding characteristics enabling reliable fabrication into complex assemblies
- Formability: Excellent cold-forming and bending properties ideal for coil and tube configurations
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Stainless Steel Coil Tube (盘管) |
| Material Grades | 304, 304L, 316, 316L, 321, 310S, 430, Duplex 2205 (custom available) |
| Outer Diameter (OD) | 6 mm – 219 mm (custom diameters available upon request) |
| Wall Thickness | 0.5 mm – 12 mm |
| Coil Diameter | Customizable per customer requirement |
| Length per Coil | Variable — typically 20 m – 200 m (negotiable) |
| Surface Finish | 2B, No.4, Mirror (BA), Matte, Custom grinding |
| Manufacturing Method | Seamless / Welded (ERW, TIG, Laser) |
| Applicable Standards | ASTM A213, ASTM A269, ASTM A778, EN 10216, GB/T 12771, JIS G3459 |
| Operating Temperature | -196 °C to +1100 °C (grade-dependent) |
| Pressure Rating | Up to 40 MPa (depending on grade and wall thickness) |
| Packaging | Wooden crate / steel band bundling / export-grade packaging |
Manufacturing Process
The coil tubes supplied by Wenzhou Jixing Metal Materials Co., Ltd undergo a rigorous, multi-stage manufacturing process to ensure dimensional accuracy, metallurgical integrity, and surface quality:
- Raw Material Selection: Only certified stainless steel billets, slabs, and strip from accredited mills are used, with full chemical composition verification (PMI and spectrographic analysis).
- Hot Rolling / Annealing: Initial hot rolling establishes base dimensions, followed by controlled annealing to relieve residual stresses and achieve target microstructure.
- Cold Drawing / Cold Rolling: Precision cold working refines wall thickness, improves surface finish, and enhances mechanical properties.
- Forming & Coiling: Tubes are bent and coiled using CNC-controlled forming equipment to achieve precise coil diameters and consistent geometry.
- Welding (for welded products): TIG or laser welding produces tight, clean seams with minimal heat-affected zones, followed by internal and external grinding as required.
- Pickling & Passivation: Chemical treatment removes oxide scale and establishes a protective passive film for optimal corrosion resistance.
- Final Inspection: Each coil undergoes dimensional verification, surface inspection, pressure testing, and non-destructive testing (EDD, PT, or UT) prior to shipment.
Applications
Due to their outstanding cost-performance ratio and broad industry acceptance, these second-tier domestic stainless steel coil tubes serve as the workhorse material across a wide spectrum of industrial applications:
- Heat Exchangers & Boilers: Coil configurations ideal for compact heat transfer surfaces in industrial and HVAC systems
- Petrochemical & Oil/Gas: Corrosion-resistant piping for processing plants, refineries, and offshore platforms
- Food & Beverage Processing: Hygienic-grade tubing for dairy, brewing, and pharmaceutical production lines
- Power Generation: Steam lines, condensate return systems, and turbine components
- Automotive & Aerospace: Exhaust systems, fuel lines, and structural tubing
- Construction & Architecture: Structural supports, railings, and decorative coil applications
- Medical Equipment: Instrument tubing and fluid transfer systems requiring biocompatibility
- Chemical Processing: Acid-resistant piping and reactor components
Quality Certifications & Assurance
Wenzhou Jixing Metal Materials Co., Ltd maintains strict quality control protocols and sources exclusively from certified manufacturers. The coil tubes in this series are backed by the following certifications and testing protocols:
- ISO 9001:2015 — Quality Management System certification for all supplier partners
- ISO 14001 — Environmental Management System compliance
- API 5L / API 5CT — American Petroleum Institute compliance for oil and gas applications
- CE / PED — European Pressure Equipment Directive compliance where applicable
- ASME — American Society of Mechanical Engineers stamp for pressure vessel applications
- Mill Test Certificates (MTC / EN 10204 3.1) — Full chemical and mechanical test data provided with each shipment
- Third-Party Inspection — SGS, BV, or TÜV inspection available upon request
- Traceability — Full heat-number traceability from raw material to finished product
Why Choose Second-Tier Domestic Coil Tubes?
"Second-tier domestic suppliers represent the industrial main force of China's stainless steel tubing market. They deliver international-standard quality at significantly more competitive prices than first-tier or imported alternatives, making them the optimal choice for projects demanding reliable performance without premium cost overhead."
- Cost-Effectiveness: 20–40% more competitive pricing compared to first-tier or imported equivalents, enabling better project ROI
- Industry Acceptance: Approved by the majority of industries and recognized by global engineering firms as reliable supply sources
- Supply Stability: Mature production capacity ensures consistent availability and shorter lead times
- Customization Flexibility: Responsive to non-standard specifications, special surface finishes, and custom coil configurations
- Full Documentation: Complete technical dossiers including MTCs, inspection reports, and compliance certificates provided with every order
Supplier Network
Wenzhou Jixing Metal Materials Co., Ltd partners with China's most respected second-tier stainless steel manufacturers:
| Supplier | Specialization | Key Strength |
|---|---|---|
| Jiuli (久立) | Seamless & welded tubes, heat exchanger tubing | National standard formulator; premium second-tier quality |
| Wujin (武进) | Industrial seamless tubes, boiler tubes | Large-scale production; strong in power and energy sectors |
| Huaxin Lihua (华新丽华) | Stainless steel wire rod, tube blanks | Integrated upstream supply chain; consistent raw material quality |
| Yongxing (永兴) | Specialty alloys, precision tubing | Diversified alloy capability; strong R&D support |
Conclusion
For industrial buyers seeking dependable, standards-compliant stainless steel coil tubes with optimal value engineering, the second-tier domestic supplier series from Wenzhou Jixing Metal Materials Co., Ltd represents the most strategic procurement decision. Backed by China's leading domestic manufacturers, these coil tubes deliver the performance, traceability, and certifications required by global industrial standards — at a price point that maximizes project economics. Contact our sales engineering team today for quotation, sample availability, and technical consultation.