Petrochemical Spring Support

In demanding petrochemical processing environments, piping systems require dependable load-bearing support to handle thermal expansion, contraction, and variable operating loads. Our spring support assemblies are engineered to deliver consistent performance in high-temperature, high-pressure, and corrosive conditions typical of refineries, ethylene crackers, and gas processing trains. These units are frequently specified alongside Oil and Gas Spring Support equipment to maintain accurate pipe elevation and reduce stress at flanges, nozzles, and rotating machinery connections. Each spring support is factory-calibrated and marked with a unique serial number, enabling quick field verification of load settings and travel limits. Heavy-duty spring coils, welded steel housings, and optional locking pins ensure stable vertical movement and lateral guidance over long service intervals. The design minimizes friction and hysteresis, which is critical for piping systems subject to frequent thermal cycling and vibration from compressors or pumps.

The Petrochemical Spring Support is manufactured in accordance with MSS SP-58, MSS SP-69, and ASME B31.3, making it suitable for critical piping categories where load variation must remain within a narrow tolerance band. Available in variable effort and constant effort configurations, this product accommodates pipe movement from the cold installed position to the hot operating position without transferring excessive stress to connected equipment. Load adjustment is achieved through a threaded top plate or an external load flange, allowing technicians to set precise cold load and hot load values before installation. The spring element is supplied with a calibrated load scale and a pre-compression locking pin, which simplifies rigging and reduces commissioning time. For aggressive petrochemical atmospheres containing hydrogen sulfide, chlorides, or moisture, a multi-layer epoxy coating, hot-dip galvanizing, or stainless steel passivation provides long-term corrosion resistance. Optional high-nickel alloy trim further extends service capability in sour gas and chloride-rich environments, while standard elastomeric pads reduce vibration transmission to building steel.

• Load Capacity: 2 kN to 500 kN (450 lbf to 112,000 lbf) in standard models; higher loads available on request
• Travel Range: 0 to 300 mm (0 to 12 in) depending on model and spring configuration
• Spring Type: Variable effort or constant effort coil springs
• Spring Constant: 10 N/mm to 1,200 N/mm, selectable to match calculated pipe movement
• Body Materials: Carbon steel A36/A53, stainless steel 304/316, alloy steel for high-load service
• Spring Coil Materials: Chrome-silicon, chrome-vanadium, or Inconel X-750 for elevated temperatures
• Temperature Rating: -40°F to 750°F (-40°C to 400°C); special materials extend to 1,000°F (538°C)
• Surface Finish: Epoxy paint, hot-dip galvanized, stainless steel passivation, or aluminum thermal spray
• Design Standards: MSS SP-58, MSS SP-69, ASME B31.3, EN 13480, and API 610 for related equipment
• Load Adjustment: Top plate thread, load flange, or turnbuckle type with visual load scale
• Testing: 100% load calibration and travel verification with serialized test reports