Stainless Steel Coil Tube — PED 2014/68/EU Certified Pressure Equipment
Product Overview
Wenzhou Jixing Metal Materials Co., Ltd. offers premium-grade stainless steel coil tubes fully compliant with the EU Pressure Equipment Directive 2014/68/EU (PED). Designed and manufactured to the rigorous standards governing pressure-containing equipment within the European Economic Area, these coil tubes are suitable for demanding industrial applications where safety, durability, and regulatory conformity are non-negotiable. Each product carries the mandatory CE marking, confirming that the manufacturing process, materials, and final product have been assessed and approved by an accredited Notified Body.
Whether used in heat exchangers, boilers, steam generators, or high-pressure piping systems, Jixing's PED-compliant coil tubes deliver exceptional performance in corrosive, high-temperature, and high-pressure environments — ensuring operational reliability and full traceability throughout the product lifecycle.
Material & Properties
The coil tubes are fabricated from high-quality austenitic stainless steel grades, including but not limited to 304, 304L, 316, 316L, 321, 310S, and 316Ti. These alloys provide outstanding resistance to oxidation, intergranular corrosion, and pitting, making them ideal for pressure equipment subjected to aggressive chemical media and extreme thermal cycling.
- Corrosion Resistance: Superior resistance to atmospheric, chemical, and chloride-induced corrosion
- Temperature Performance: Operational range from cryogenic temperatures up to 800°C (grade-dependent)
- Mechanical Strength: High tensile strength and elongation for reliable pressure containment
- Hygienic Surface: Available in polished (Ra ≤ 0.5 μm) and electropolished finishes
- Material Traceability: Full mill certification and material approval per PED requirements
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Stainless Steel Coil Tube (Continuous Length) |
| Material Grades | 304, 304L, 316, 316L, 321, 310S, 316Ti, and custom alloys |
| Outer Diameter | Φ6.0 mm – Φ114.3 mm (custom sizes available) |
| Wall Thickness | 0.5 mm – 12.0 mm |
| Coil Diameter | 300 mm – 2000 mm (configurable per application) |
| Manufacturing Method | Seamless / Welded (ERW, TIG, Laser Welded) |
| Surface Finish | 2B, No. 4, Mirror Polish (Ra ≤ 0.5 μm), Electropolished |
| Heat Treatment | Solution Annealed, Stress Relieved |
| Compliance Standard | PED 2014/68/EU (Categories I, II, III, IV) |
| Certification Marking | CE Mark with Notified Body Identification Number |
| Testing | Hydrostatic Test, Dimensional Inspection, NDT (UT/PT/RT) |
| Delivery Condition | Coiled on wooden pallets, shrink-wrapped, with full documentation |
Manufacturing Process
Every coil tube produced by Wenzhou Jixing Metal Materials undergoes a tightly controlled manufacturing process designed to meet PED 2014/68/EU Category requirements:
- Raw Material Selection: Only mill-certified stainless steel billets or strip stock with full chemical and mechanical traceability are accepted. Material approval documentation is maintained per PED Annex II requirements.
- Forming & Coiling: Precision cold-rolling or seamless piercing processes ensure dimensional accuracy and consistent wall thickness. Coiling is performed under controlled tension to prevent deformation.
- Welding (if applicable): Welded variants utilize TIG or laser welding with full weld procedure qualification (WPQ/WPQR) and welder qualification records.
- Heat Treatment: Solution annealing at controlled temperatures ensures uniform microstructure, stress relief, and optimal corrosion resistance.
- Non-Destructive Testing: Ultrasonic testing (UT), penetrant testing (PT), and radiographic testing (RT) are applied as required by the PED category classification.
- Hydrostatic Pressure Testing: Each coil lot is subjected to hydrostatic testing at a minimum of 1.5× the maximum working pressure to verify integrity.
- Final Inspection & Documentation: Comprehensive dimensional checks, surface quality assessment, and compilation of the Quality Assurance Dossier per PED Article 13.
Applications
PED-certified stainless steel coil tubes from Jixing are engineered for use in critical pressure equipment and systems across multiple industries:
- Heat Exchangers & Boilers: Shell-and-tube heat exchangers, fire-tube boilers, and steam generators
- Chemical & Petrochemical Processing: Reactors, distillation columns, and process piping systems
- Power Generation: Superheaters, economizers, and condensers in thermal and nuclear power plants
- Pharmaceutical & Food Processing: Hygienic heat transfer coils and CIP-compatible tubing systems
- Oil & Gas: Subsea production equipment, offshore platforms, and LNG processing
- Marine Engineering: Shipboard boilers, condensers, and pressure vessels
- Industrial Steam Systems: Steam coils, heat tracing, and process heating applications
Quality Certifications & Regulatory Compliance
Wenzhou Jixing Metal Materials Co., Ltd. maintains full compliance with the EU Pressure Equipment Directive 2014/68/EU, ensuring that all products are fit for placement on the European market and integration into pressure equipment systems governed by this directive.
PED 2014/68/EU Compliance Highlights
- CE Marking: Every product batch carries the CE conformity marking, accompanied by the identification number of the authorized Notified Body.
- Notified Body Audit: The manufacturing facility and quality management system are subject to periodic audits by an EU-accredited Notified Body, ensuring ongoing compliance with Annex III and IV requirements.
- Material Approval: All raw materials are sourced from approved suppliers with valid material certificates (EN 10204 3.1/3.2), verified against PED material specifications.
- Quality Assurance Dossier: A comprehensive quality documentation package is provided with each shipment, including design calculations, material certificates, test reports, and the CE declaration of conformity.
- Category Coverage: Products are manufactured to meet PED Categories I through IV, accommodating equipment with various pressure-volume (PS) ratings.
Additional Certifications
- ISO 9001:2015 Quality Management System
- ISO 14001 Environmental Management System
- EN 10204 3.1 / 3.2 Material Testing Certificates
- ASME / ASME Section IX Welding Qualification (where applicable)
- AD 2000-Merkblatt W0 (German pressure vessel code)
- EN 10217 (Tube standards)
- EN 13445 (Pressure vessel design code)
Why Choose Wenzhou Jixing? With full PED 2014/68/EU compliance, Notified Body oversight, and a commitment to material traceability and rigorous testing, Jixing delivers stainless steel coil tubes that meet the highest European safety standards — reducing certification risk for equipment manufacturers and ensuring seamless integration into critical pressure systems worldwide.