Spring Hangers for the Oil and Gas Industry

In oil and gas projects, process pipelines, long-distance transmission pipelines and utility pipelines face multiple harsh conditions: high-temperature and high-pressure media, corrosive components such as sulfur, coastal high-humidity salt spray environments, as well as the enormous dead weight and thermal expansion of large-diameter pipelines. If the support system relies solely on simple rigid fixation, it not only fails to compensate for displacement but also converts pipeline deformation into additional loads on equipment nozzles, increasing the risk of leakage and fatigue failure.

Relying on 14 years of experience in manufacturing pipeline supports and hangers, Yangzhou Tianshun Pipeline Technology Co., Ltd. provides customized Spring Hangers for the Oil and Gas Industry to control pipeline stress, protect critical equipment interfaces and adapt to complex on-site conditions.

Core Challenges to be Addressed by Oil and Gas Pipeline Supports

Pipeline systems in refineries, LNG terminals, gas processing plants and long-distance pumping stations have diverse operating conditions but share the same requirement: pipeline dead weight and thermal displacement must be controlled within safe limits. Process pipelines often operate above 300°C, while cryogenic LNG pipelines run below -162°C, making a single support solution inadequate.

Furthermore, sour environments containing hydrogen sulfide require structural components to have sulfide stress cracking (SSC) resistance, and offshore platforms and coastal facilities demand high-grade salt spray protection. In engineering practice, supports and hangers must not only deliver predictable support forces but also accommodate foundation deviations during installation and remain free from failure due to corrosion or relaxation during long-term operation.

Design and Functions of Spring Hangers for the Oil and Gas Industry

Spring Hangers for the Oil and Gas Industry are configured one-to-one based on pipeline stress analysis reports, available in two load types: variable spring and constant force spring. Variable spring units provide support with linear stiffness within their stroke range, suitable for points with small displacements and low sensitivity to support force variations. Constant force units utilize a primary and secondary spring mechanism to control support force variation within 5% throughout the entire stroke, making them ideal for equipment nozzles, strippers, reboilers, compressor inlets and outlets, and other locations with strict nozzle load requirements.

Depending on the media and installation environment, spring elements are manufactured from alloy spring steels such as 60Si2Mn or 50CrVA. Cylinders and structural components can be fabricated from carbon steel, heat-resistant steel, duplex stainless steel or nickel-based alloys, with material treatments complying with NACE MR0175/ISO 15156 to meet the requirements of sour oil and gas fields.

For protective coatings, offshore facilities can use a high-adhesion epoxy zinc-rich primer plus polyurethane topcoat system, while onshore pipelines commonly employ hot-dip galvanizing or Dacromet coating to ensure long-term performance in salt spray and industrial atmospheres. Products comply with standards including ASME B31.3, ASME B31.4 and MSS SP-58. Each housing is equipped with a load-displacement nameplate and locking pin for easy cold-state installation and on-site verification.

On-Site Selection, Installation and Long-Term Stability

Upon receiving pipeline stress analysis data, our technical team recommends matching Spring Hangers for the Oil and Gas Industry models and spring constants for each support point. During the selection phase, special attention is paid to design load, design displacement, temperature and environmental corrosion grade, while also considering the additional weight of water-filled pipelines during hydrostatic test conditions to prevent spring overload or solidification.

During installation, Spring Hangers for the Oil and Gas Industry provide a certain vertical adjustment range to absorb foundation elevation errors and pipe prefabrication deviations. Constant force units can be optionally equipped with screw or hydraulic auxiliary adjustment devices for precise alignment even under heavy load conditions. The locking pin is removed after the pipeline is heated up, and the hanger enters operation without requiring any hot work.

During long-term operation, the anti-relaxation spring design and regular inspection points help maintenance teams detect abnormalities in a timely manner. Among our projects exported to more than 45 countries, over 70% of subsequent support and hanger orders come from existing customers. This repeat purchase data reflects the sustained reliability of our products to a certain extent.

Typical Application Locations in Oil and Gas Facilities

Fluid Catalytic Cracking (FCC) and Hydroprocessing Units: High-temperature reaction oil and gas pipelines and regenerator flue gas pipelines experience large thermal displacements during operation with strict nozzle load limits. The use of constant force spring hangers effectively controls interface forces on equipment such as reactors and third-stage separators, preventing flange joint leakage.

LNG Terminals and Cryogenic Systems: Cryogenic pipelines between unloading arms and storage tanks, as well as refrigerant circulation pipelines, face extreme temperature differences. Spring hangers adopt cryogenic-resistant materials to provide stable support throughout the entire process from cold pre-cooling to deep cryogenic operation, protecting expansion joints and tank nozzles.

Crude Oil and Product Long-Distance Pipelines: Inlet and outlet pipelines in pumping stations and valve area pipelines experience temperature variations with seasons and transported media. Variable spring hangers combined with limit brackets maintain proper pipeline slope, avoiding vibration and water hammer risks caused by support point lifting off.

Offshore Platforms and FPSOs: These facilities have compact spaces and are subject to additional dynamic loads from rocking motion. Constant force spring hangers with limit functions can be used in conjunction with dampers to compensate for thermal displacement while restraining low-frequency sway caused by wind and waves, reducing joint fatigue damage.

Quality Documentation and Technical Support

Starting from spring wire incoming re-inspection, our factory implements strict quality control at every stage: heat number verification, hardness and metallographic inspection after heat treatment, finished product full-stroke stiffness testing and coating adhesion testing. Each batch of Spring Hangers for the Oil and Gas Industry can be provided with material quality certificates, inspection reports, NACE compliance statements and ASME certification documents to support overseas project audits.

Our technical team can provide detailed installation manuals and cold-state adjustment recommendations as required, and can cooperate with third-party witnessing or on-site supervision.

If you need to configure Spring Hangers for the Oil and Gas Industry for a specific oil and gas project, please provide pipeline layout drawings, stress calculation reports and on-site environmental data. We will deliver a selection report including load-stroke calculations and recommended installation elevations, rather than just a list of standard models, helping you control overall costs while ensuring the safe and reliable operation of your pipeline support system throughout its life cycle.