Domestic and overseas environmental access standards for energy storage equipment are tightened synchronously in 2026. Supporting precision press-fit parts must fully meet RoHS 2.0 six hazardous substance limits and IEC halogen-free bromine & chlorine control requirements. Domestic energy storage OEMs and overseas export EPC contractors mandate suppliers to attach third-party environmental test reports for every batch. Many small & medium press-fit factories suffer detention and rework compensation due to irregular control of passivation and electroplating chemicals leading to excessive lead and bromine. This article clarifies environmental limit values for different materials and surface treatments exclusively for sheet metal press-fit products, building a practical full-process compliance management system.
| Control Index | RoHS Limit (Carbon Steel Electroplated Press Parts) | IEC Halogen-free Limit (Stainless Steel Passivated Press Parts) | Typical Excessive Cause |
| Lead(Pb) | ≤1000ppm | ≤90ppm | Inferior electroplating brightener, recycled stainless wire |
| Cadmium(Cd) | ≤100ppm | ≤40ppm | Low-cost galvanizing passivation liquid |
| Total Bromine(Br) | No mandatory limit (Domestic Market) | ≤900ppm | Bromine-containing anti-rust cleaning additive |
| Chlorine(Cl) | No mandatory limit (Domestic Market) | ≤900ppm | Chlorine-containing pickling degreaser |
1. Upstream Raw Material Access: Stainless steel wire, electroplating & passivation chemicals must provide MSDS chemical safety sheet before warehousing; low-cost potions and recycled materials without environmental certification are prohibited. Raw materials are sampled for third-party testing every quarter. 2. Isolated Production Process: Bromine & chlorine containing cleaning agents are used in separate workshops. Workpieces are multi-stage rinsed with pure water after production to avoid residual chemicals trapped in thread gaps. Carbon steel and stainless steel products are processed in separate tanks to prevent cross-contamination. 3. Finished Batch Traceability: Each batch of press-fit parts is bound to corresponding raw material lot number and surface treatment shift, environmental test report matches physical batch number one-to-one. Warehouse divides qualified and unqualified isolated zones to avoid mixed storage.
1. Only complete machine environmental report provided without separate RoHS & halogen-free test certificate for press-fit fasteners, customs judges component compliance untraceable; 2. Stainless press-fit parts adopt chromium-containing heavy anti-corrosion passivation with excessive hexavalent chromium, full container detained at European & American ports directly; 3. Mixed batch reports with inconsistent test lot number and outer package serial number of shipped goods, failing origin environmental inspection; 4. Bromine-containing anti-rust oil used for press-fit part storage, total bromine exceeds IEC halogen-free standard, goods rejected by overseas energy storage project supervisors.
All energy storage equipment exported to Europe and America require halogen-free grade stainless steel press-fit parts, indoor domestic cabinets can relax to basic RoHS standard. Third-party authoritative test report attached to every batch with validity period no more than 12 months. Suppliers shall establish environmental ledgers for raw materials, production and finished goods, and on-site environmental audit is conducted by OEM customers once a year.
Contact: Mr. Deng
Phone: 13928071304
Tel: 0756-8586520
Email: lizhong@zhjiali.com
Add: 102, Building 4, No. 4 Fuyuan Road, Waisha Village, Shenwan Town, Zhongshan City, Guangdong Province,China