Stainless Steel Coil Tube — First-Tier Domestic Supplier (Baofeng Clean)
Product Overview
Wenzhou Jixing Metal Materials Co., Ltd. supplies premium-grade stainless steel coil tubes under the Baofeng Clean (宝丰洁净) brand, representing the top tier of domestic Chinese stainless steel tubing manufacturers. As a recognized first-tier supplier in the national supply chain hierarchy, Baofeng Clean delivers coil tube products with industry-leading production capacity, total output value, and certification credentials. These coil tubes are engineered for demanding industrial applications where dimensional precision, surface quality, corrosion resistance, and long-term structural integrity are critical.
The Baofeng Clean brand has established itself as a benchmark for domestic stainless steel coil tube manufacturing, consistently ranking at the forefront in terms of manufacturing scale, quality assurance systems, and technical capability. Wenzhou Jixing Metal Materials Co., Ltd. leverages this first-tier supply chain position to provide procurement teams with reliable, high-performance coil tube solutions backed by a proven track record of excellence.
Material & Properties
Baofeng Clean stainless steel coil tubes are fabricated from high-quality austenitic stainless steel grades, selected to meet or exceed international material specifications. The following key properties define the performance envelope of these products:
- Corrosion Resistance: Superior resistance to atmospheric corrosion, chemical exposure, and oxidizing environments, suitable for both indoor and outdoor service conditions.
- Mechanical Strength: Excellent tensile and yield strength characteristics, ensuring reliable performance under pressure and mechanical loading.
- Formability: High ductility and workability, enabling cold bending, forming, and shaping without cracking or surface degradation.
- Weldability: Compatible with all standard welding processes (TIG, MIG, resistance welding) with minimal distortion and excellent joint integrity.
- Hygienic Surface: Available in polished, pickled, or passivated surface finishes to meet sanitary and clean-environment requirements.
- Temperature Range: Suitable for cryogenic to elevated temperature applications, maintaining structural stability across a wide thermal spectrum.
Specifications
| Parameter | Specification / Range |
|---|---|
| Product Type | Stainless Steel Coil Tube (Continuous Length Coil) |
| Brand | Baofeng Clean (宝丰洁净) |
| Supplier Tier | First Tier — Domestic Leader |
| Common Grades | 304, 304L, 316, 316L, 321, 310S (custom grades available) |
| Outer Diameter (OD) | 3.0 mm – 219.1 mm (custom dimensions on request) |
| Wall Thickness | 0.3 mm – 12.0 mm |
| Coil Length | Continuous coil, typically 50 m – 500 m per coil |
| Coil Inner Diameter | Standard 150 mm, 200 mm, 300 mm, or custom |
| Manufacturing Method | Seamless / Welded (per application requirement) |
| Surface Finish | Pickled, Polished (2B, No.4, Mirror), Passivated |
| Standard Compliance | ASTM A213, ASTM A269, GB/T 12771, GB/T 14976, EN 10216 |
| Production Capacity | Industry-leading annual output (first-tier domestic scale) |
Manufacturing Process
Baofeng Clean's coil tube production process reflects the highest standards of domestic manufacturing capability. The production workflow integrates advanced technology with rigorous process control at every stage:
- Raw Material Selection: Only certified stainless steel billets and strip from approved mills are used, ensuring traceability and chemical composition conformance from the source.
- Piercing & Rolling: Billets are heated and pierced to form hollow sections, then hot-rolled to approximate dimensions. Welded variants utilize precision strip rolling and forming.
- Cold Drawing & Sizing: Tubes undergo cold drawing through precision dies to achieve exact dimensional tolerances, superior surface finish, and enhanced mechanical properties.
- Coil Winding: Finished tubes are wound onto coils at controlled tension and diameter to prevent deformation, kinking, or surface damage during storage and transport.
- Heat Treatment: Solution annealing is performed to relieve residual stresses, restore full austenitic microstructure, and maximize corrosion resistance.
- Surface Treatment: Pickling and passivation processes remove mill scale and contaminants, forming a protective chromium oxide layer on the tube surface.
- Quality Inspection: Every coil undergoes ultrasonic testing (UT), eddy current testing (ECT), dimensional verification, and hydrostatic pressure testing to ensure zero-defect delivery.
Applications
Baofeng Clean stainless steel coil tubes are deployed across a broad spectrum of industrial sectors, where the combination of corrosion resistance, mechanical reliability, and hygienic surface quality is paramount:
- Heat Exchangers & Boilers: Coil tubes serve as critical heat transfer elements in shell-and-tube heat exchangers, boilers, and evaporators.
- Automotive Industry: Used in exhaust systems, turbocharger piping, fuel lines, and HVAC components requiring high-temperature and corrosion resistance.
- Food & Beverage Processing: Hygienic-grade coil tubes for processing equipment, conveyance lines, and sanitary piping systems.
- Pharmaceutical & Biotech: Clean-environment tubing for bioreactors, CIP/SIP systems, and pharmaceutical manufacturing lines.
- Chemical & Petrochemical: Resistant tubing for chemical processing, distillation columns, and acid/alkali handling systems.
- Oil & Gas: Downhole tubing, wellhead components, and subsea piping in corrosive offshore environments.
- Energy & Power Generation: Condenser tubes, superheater tubes, and steam piping in thermal power and nuclear facilities.
- Construction & Architecture: Structural tubing, handrails, and decorative elements in high-end architectural applications.
Quality Certifications & Standards
Baofeng Clean's position as a first-tier domestic supplier is substantiated by a comprehensive portfolio of quality certifications and standards compliance:
- ISO 9001: Quality Management System certification ensuring consistent process control and continuous improvement.
- ISO 14001: Environmental Management System certification demonstrating commitment to sustainable manufacturing practices.
- ISO 45001: Occupational Health and Safety Management System certification.
- NADCAP / PED: Pressure Equipment Directive compliance for applications requiring certified pressure vessel components.
- ASME: Compliance with American Society of Mechanical Engineers codes for pressure-containing applications.
- Third-Party Inspection: Available for Lloyd's, SGS, BV, and other recognized inspection bodies upon request.
Key Competitive Advantage: As a first-tier domestic supplier, Baofeng Clean combines industry-leading production capacity with comprehensive certification coverage, delivering stainless steel coil tubes that meet international quality standards at competitive domestic supply chain pricing. Wenzhou Jixing Metal Materials Co., Ltd. provides procurement teams with direct access to this premium supply chain tier, ensuring reliable sourcing, consistent quality, and supply security for demanding industrial applications.