In highly corrosive environments such as marine, chemical, pharmaceutical and food processing industries, ordinary carbon steel constant spring supports typically experience housing corrosion perforation, spring rust fracture and connection bolt seizure within 1-3 years. These failures not only cause pipeline stress concentration and media leakage but may also lead to unplanned plant shutdowns, resulting in huge economic losses and safety hazards.
Manufactured entirely from stainless steel materials, the Stainless Steel Constant Spring Support fundamentally solves the pipeline support challenges in corrosive environments.
| Constant Spring Hanger Spec Table | Example |
| Model / Series | PH, LH, CA, CS, TH |
| Load Capacity (Operating) | 0.1 kN - 500 kN |
| Total Travel | 50mm, 100mm, 200mm, 400mm |
| Actual Travel | Up to 600mm |
| Load Deviation (Tolerance) | ±5% (Standard) / ±3% (High Prec.) |
| Installation Position | Horizontal / Vertical |
| Housing Finish | Hot Dip Galvanized / Epoxy |
| Operating Temp. | -20°C to +80°C (Ambient) |
| Spring Coil Material | 60Si2Mn / 50CrVA |
| Load Adjustment Range | ±10% (Field Adjusting) |
We have established a complete graded material system for Stainless Steel Constant Spring Supports, precisely matching materials according to different corrosion grades and working condition requirements to avoid over-engineering or insufficient performance:
|
Material Grade |
Core Composition |
Corrosion Resistance |
Applicable Environments |
|
304 Stainless Steel |
18Cr-8Ni |
Good |
Indoor mild corrosion, fresh water environments, general chemical atmospheres |
|
316L Stainless Steel |
16Cr-12Ni-2Mo |
Excellent |
Marine atmospheres, weak acids and alkalis, chemical wastewater, food processing |
|
2205 Duplex Steel |
22Cr-5Ni-3Mo |
Superior |
Strong acids and alkalis, seawater with high chloride ion content, oil and gas field environments |
|
904L Super Stainless Steel |
20Cr-25Ni-4.5Mo |
Exceptional |
Strong corrosive media such as sulfuric acid and phosphoric acid, high-temperature chemical environments |
All stainless steel materials are sourced from leading domestic steel mills such as Baosteel and Taigang. Each batch of materials is accompanied by the original material certificate and undergoes 100% spectral analysis verification.
▶ All-Stainless Steel Structure: All components from springs and linkages to housings and bolts are made of stainless steel, with no carbon steel parts
▶ Stable Constant Force Accuracy: Full-stroke load variation rate ≤5%, maintaining long-term performance unaffected by corrosion
▶ Passivation Anti-Corrosion Treatment: All components undergo pickling and passivation treatment to form a dense oxide film on the surface
▶ Non-Magnetic Design Optional: Non-magnetic stainless steel versions are available for special locations such as MRI rooms
▶ Fully Sealed Structure: Prevents corrosive media from entering internal mechanisms, extending service life
▶ On-Line Adjustability: Equipped with stainless steel adjustment bolts for fine load tuning without shutdown
|
Comparison Item |
Carbon Steel Constant Spring Support |
Stainless Steel Constant Spring Support |
|
Main Body Material |
Q235B/Q345B Carbon Steel |
304/316L/2205 Stainless Steel |
|
Anti-Corrosion Life |
1-3 years (ordinary paint) |
10-20 years (pickling and passivation) |
|
Maintenance Frequency |
Annual rust removal and repainting |
No regular anti-corrosion maintenance required |
|
Operating Temperature |
-40℃ ~ +450℃ |
-196℃ ~ +600℃ |
|
Media Compatibility |
Neutral media only |
Compatible with most corrosive media |
|
Total Life Cycle Cost |
High (frequent replacement + maintenance) |
Low (one-time installation for long-term use) |
Designed specifically for highly corrosive environments, Stainless Steel Constant Spring Supports are widely used in:
▶ Pipeline systems on offshore platforms and offshore wind farms
▶ Acid, alkali and salt media transmission pipelines in petrochemical industry
▶ Clean pipelines in pharmaceutical and food processing industries
▶ Pipelines in seawater desalination and wastewater treatment plants
▶ LNG terminals and storage tank farms in coastal areas
▶ Radioactive media pipelines in nuclear power plants
Targeting the characteristics of stainless steel materials, we have developed exclusive manufacturing processes for Stainless Steel Constant Spring Supports:
▶ Argon Arc Welding: All welds adopt gas tungsten arc welding (GTAW) with no spatter or slag inclusions
▶ Integral Pickling and Passivation: Overall pickling and passivation after assembly to ensure consistent anti-corrosion performance on all surfaces
▶ Iron Contamination Control: Special tools are used during production to avoid carbon steel contamination
▶ Salt Spray Testing: Each batch of products undergoes 72-hour neutral salt spray testing to verify anti-corrosion performance
▶ Helium Leak Detection: Helium leak detection is performed for products with high sealing requirements
We have established a strict special quality control system for stainless steel products:
▶ Raw Material Incoming: Spectral analysis + mechanical property testing + intergranular corrosion test
▶ Processing: Dimensional accuracy inspection + weld penetrant testing
▶ Finished Product Testing: Full-stroke constant force performance testing + salt spray testing
▶ Final Factory Inspection: Appearance inspection + document review + packaging inspection
Our quality management system is certified to ISO 9001:2015, and all products comply with international standards including CE, API and FDA food contact standards.
Free corrosive environment assessment and material selection recommendations
Customized design of non-standard stainless steel constant spring supports
On-site installation guidance and anti-corrosion maintenance training
12-month warranty period with lifetime technical support
Emergency spare parts shipped within 48 hours
Q: Will stainless steel constant spring supports rust?
A: Stainless steel is not absolutely rust-proof, but has excellent corrosion resistance in specific environments. Our products undergo pickling and passivation treatment, ensuring no rust for more than 10 years in marine atmospheric environments. For highly corrosive environments, higher-grade materials can be selected as needed.
Q: Can you provide food-grade stainless steel products?
A: Yes. We provide 316L stainless steel products that comply with FDA food contact standards. The surfaces are polished with no dead corners and are easy to clean, making them suitable for food processing and pharmaceutical industries.
Address
No.115 Yunhe North Road, Yangzhou City.Shuzhou, China
Tel
If you have any enquiry about quotation or cooperation, please feel free to email us at jsts2021@yeah.net or use the following inquiry form.Our sales representative will contact you within 24 hours. Thank you for your interest in our products.
Copyright © 2026 Yangzhou Tianshun Pipeline Technology Co., Ltd. All Rights Reserved.
