Our stainless steel bellows are precision-engineered from high-grade austenitic and duplex stainless steels (304, 316L, 321, 2205, etc.), offering exceptional flexibility, pressure resistance, and corrosion stability. Designed to compensate for thermal expansion, vibration, and misalignment in piping systems, these bellows feature multi-ply construction (1-8 layers) and customized convolution profiles. Available in standard sizes (DN15-DN1200/½"-48") with working pressure up to 6.0MPa and temperature range from -196°C to 800°C. Compliant with EJMA, ASME B31.3, and ISO 10380 standards, ideal for chemical, petrochemical, power generation, HVAC, and water pipeline systems.

Our automated bellows production line integrates hydroforming, mechanical expansion, and CNC convolution molding processes, supported by AI-driven dimensional inspection systems. The facility features solution annealing furnaces (temperature control ±3°C) and automated TIG welding stations with argon protection. Every bellows undergoes strict pressure testing, helium leak detection, and metallographic verification to ensure cycle life exceeding 10,000 repetitions. Robotic polishing and electrochemical passivation deliver surface finishes meeting Ra≤0.8μm for critical applications.

In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.

Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.