Corrosion Resistant Effective Silver Plating Lateral Displacement Compensation Industrial Bellows Expansion Joint

Product Description

Product Description

Bellows expansion joints are high-performance flexible components designed to absorb thermal expansion, contraction, and mechanical displacement in industrial piping systems. Manufactured with precision-engineered metallic bellows (stainless steel, alloy steel), they effectively mitigate pipeline stress, reduce vibration, and ensure system integrity. Compliant with international standards (ISO, DIN, ASME), our expansion joints are customizable for diverse pressure, temperature, and displacement requirements.

Product Features

·       Thermal Compensation: Absorbs axial, lateral, and angular displacement caused by temperature fluctuations.

·       Corrosion Resistance: SS 304/316L , 
Vibration Damping: Reduces mechanical vibration and noise from pumps, compressors, and turbines.

·       Temperature Rating: Operates safely at -200℃ to 400℃ 
Leak-Proof Seal: Precision-welded bellows and end connections ensure reliable sealing.

·       Compact Design: Saves installation space while maintaining maximum flexibility.

Product Specifications

·       Material: SS304 SS, 316L ,
Nominal Diameter (DN): DN15 - DN5000

·       Working Temperature: -200℃ ~ 400℃ (Depends on material)

·       Displacement Capacity: Axial ±50mm, Lateral ±25mm, Angular ±15°

·       Connection Type: Flange , Welded

·       Length: (Custom lengths available)

·       Certification: ISO 9001, ASME, 

Product Advantages

·       Stress Relief: Protects pipelines and equipment from thermal stress damage.

·       Long Service Life: Durable bellows structure ensures 10+ years of reliable operation.

·       Easy Installation: Lightweight and flexible design simplifies on-site assembly.

·       Low Maintenance: Corrosion-resistant properties minimize downtime and maintenance costs.

·       Customization: Tailor-made displacement, pressure, and material solutions for specific projects.

·       Safety Compliance: Meets global industrial safety and environmental standards.

Main Products

Application Scenarios

·       Petrochemical & Oil/Gas: Refineries, pipelines, offshore platforms (steam/chemical transfer).

·       Power Generation: Thermal/nuclear power plants (boiler, turbine piping systems).

·       Building & HVAC: Heating, ventilation, and air conditioning pipelines.

·       Water Treatment: Desalination plants, sewage treatment systems.

·       Mechanical Engineering: Industrial machinery, pump/compressor piping.

·       Chemical Processing: Chemical reactors, acid/base transfer pipelines.

Company Profile

Jiangsu Hongyuan Pipe Industry Co., Ltd. is a private joint-stock enterprise formed on the basis of Jiangyan Hongda Corrugated Pipe Factory. It is located in Jiangyan High-tech Equipment Park (No.66 Shuguang Middle Road, Baimi Town), Taizhou City, Jiangsu Province. Registered capital of 10.08 million yuan, covers an area of 15,600 square metres. Adjacent to the Qiyang Expressway, Ningjing Salt Expressway, Ninghu Yanjiang High-speed Railway and Yangtai Airport, the company has a convenient traffic location and very smooth logistics. The company has strong technical force, advanced technology, complete equipment, perfect testing methods, the company's production of 'Hong Torch' brand of various types of metal bellows expansion joints, corrugated metal hose, vacuum adiabatic cryogenic tubes, pressure vessels, chemical pipeline filters and other series of products have been widely supporting services in the air separation, petroleum, chemical industry, machinery, metallurgy, shipping, Refrigeration, medicine, city gas, natural gas pipeline and many other industries. Some products have been exported to Asia, Europe and Africa.

After nearly 40 years of development and precipitation, the company has become a high-tech enterprises in Jiangsu Province, Jiangsu Province, speciality and new small and medium-sized enterprises, and has obtained the 'B-class pressure piping components manufacturing licence', 'quality management system certification' issued by China Classification Society, 'D1, D2-class pressure vessel manufacturing licence', 'ASME U steel seal product certification', 'A2-class pressure vessel manufacturing (with the design of the products manufactured)' permit. A2 Class Pressure Vessel Manufacturing (with product design capability)' licence. We have passed CCS/ABS/DNV/LR/BV/NK/KR product certification of domestic and foreign classification societies, ISO9001 quality management system, ISO14001 environmental management system, ISO45001 occupational health and safety management system certification.
The company focuses on the design, manufacture, sales and related technical services for the supporting and integration of stainless steel metal hoses, corrugated expansion joints, non-metallic compensators, A2, D class pressure vessels, vacuum hoses, double-wall pipes, cryogenic insulation pipes, cryogenic submerged liquid pumping pools, filters and other supporting and integrated products. The company has formed a product pattern of three series and more than sixty specifications.

Continuously pursuing technological innovation, the company has successfully developed a number of core technologies with intellectual property rights, with 2 invention patents and 23 utility model patents, of which the self-developed special stainless steel vacuum tube technology under ultra-low temperature conditions has filled the gaps in the domestic speciality industry and reached the international leading level at the same time. The company has Jiangsu University of Science and Technology production and research base, and Shanghai Jiaotong University, Wuhan University of Technology and other institutions of permanent cooperation in research and development, Taizhou City, Jiangsu Province, identified as an enterprise technology centre, cryogenic pipeline engineering technology research centre for the China Gas Association drafted the preparation of the 'General Technical Conditions for low-temperature corrugated metal hose' industry standards, due to the national industry, civil-military integration policy, has been successfully registered into the 'People's Liberation Army Equipment Contractor', for China's aerospace, civil-military integration policy, has successfully registered into the 'People's Liberation Army Equipment Contractor'. Unit', for China's aerospace, sea equipment cause to contribute to the modest contribution.
The company actively responds to the national 'double carbon emission reduction' and sustainable development strategy, timely adjustment of the product structure, around the 'speciality, precision, speciality, new' has developed a double-walled marine pipe, low-temperature adiabatic tube, low-temperature submerged liquid pumping pool, pipeline filters and other products. We have achieved a greater leap in innovation ability, product grade, management level and market share. We always take 'quality first, customer first' as the first business philosophy of the enterprise, strictly implement the special equipment manufacturing licensing system, elaborate manufacturing, excellence, to provide customers with safe, energy-saving, inexpensive products and excellent after-sales service.

Certifications

Packaging & Shipping

FAQ

I. Company Strength & Qualifications

1.   What are your company's core advantages?

We have specialized in the R&D and manufacturing of metal hoses, expansion joints, and pressure vessels for over 15 years, with core strengths including: (1) Special equipment production licenses (Pressure Vessel Class A2, Pressure Pipe Component Class B); (2) Own 30,000m² production base with an annual output of over 50,000 sets of various products; (3) Core technical team consisting of 12 senior engineers, providing full-process technical support from design to after-sales; (4) Serving more than 2,000 enterprises worldwide, covering chemical, nuclear power, shipbuilding, new energy and other industries.

2.   What core certifications does your company hold?

In addition to mandatory domestic certifications (Special Equipment Production License TSG 21-2016, ISO 9001 Quality Management System Certification), we have obtained CE (PED 2014/68/EU), ASME, SGS Material Certification, and ISO 14001 Environmental Management System Certification. Our products comply with multiple national standards such as GB, ANSI, and DIN, enabling direct export to major global markets.

3.   Do you offer factory visits or audits?

Yes! We welcome domestic and foreign customers to book factory visits. We will arrange professional staff to accompany you to visit the production workshop, testing center, and finished product warehouse, and provide product production process demonstrations and material inspection report verification services. Customers requiring factory audits should notify us 3 working days in advance, and we will assist with relevant document preparation.

II. Order & Shipping Process
1.   What is the order placement process?
(1) Customers provide required parameters (size, material, working conditions, quantity, etc.); (2) We issue a quotation and technical plan within 12 hours; (3) Customers confirm the quotation and pay the advance payment (30% for regular orders); (4) Sign a formal contract (electronic/paper contract available); (5) Factory schedules production (providing real-time production progress tracking); (6) Notify customers to pay the balance after product inspection; (7) Arrange shipment and provide logistics tracking number.

2.   What is the production lead time for standard and customized products?
•      Standard products (e.g., general-purpose metal hoses, standard-size expansion joints): 7-15 working days;
•      Customized products (e.g., special materials, non-standard sizes, complex working condition adaptation): 15-30 working days;
•      Urgent orders: Expedited production available with a minimum lead time of 3-7 working days (subject to prior communication and production capacity).

1.   What shipping methods are available, and how to choose?
(1) Domestic orders: Default to road logistics (e.g., Deppon, SF Express, Anneng), with door-to-door delivery available; Small items can be shipped by courier (SF Express, JD.com); Full truckload transportation negotiable for large orders;
(2) Export orders: Support sea freight (terms like FOB/CIF), air freight, and international courier (DHL/UPS/FedEx). We can arrange shipment to customer-specified ports/airports and provide full customs declaration and inspection services.

2.   What are the packaging standards? Is customized packaging available?
Standard packaging: Products are wrapped with waterproof film + bubble film, packed in solid wood pallets/corrugated cartons, with protective sleeves for key parts (e.g., flange interfaces, bellows) to ensure no damage during transportation;
Customized packaging: Export fumigation packaging, moisture-proof packaging, and logo customization (e.g., printing customer's LOGO, product serial number) are available. Please specify requirements in the order; related costs are negotiable.

III. Logistics & After-Sales Support
1.   What is the logistics time for domestic orders?

(1) Neighboring provinces (e.g., Jiangsu, Zhejiang, Shanghai, Anhui): 2-3 working days;
(2) Central and North China: 3-5 working days;
(3) Northwest, Southwest, and Northeast China: 5-7 working days;
(4) Remote areas (e.g., Xinjiang, Tibet, Qinghai): 7-10 working days (subject to actual logistics time).

2.   How to track logistics progress?
After shipment, we will send the logistics tracking number and inquiry link via email/WeChat/SMS, allowing customers to track transportation status in real-time. For delayed or abnormal logistics, please contact your dedicated customer service, and we will coordinate with the logistics provider for immediate resolution.

3.   What should be noted when receiving goods?
Before signing for delivery, please verify: (1) Whether the outer packaging is intact (no damage, deformation, or water stains); (2) Whether the quantity matches the order; (3) Whether the product appearance is free of scratches or collisions. If abnormalities are found, please take photos as evidence, refuse acceptance, and contact us immediately. We will assist with return, exchange, or compensation procedures. Normal acceptance shall be deemed as confirmation of undamaged delivery.

4.   What if products are damaged during transportation?
After verification of transportation-related damage, we provide: (1) Free replacement of damaged parts or the entire batch of products; (2) Expedited repair and replacement to ensure no impact on customer use. All costs related to transportation damage shall be borne by our company, with no additional charges to customers.

IV. Invoicing & Payment
1.   What types of invoices do you provide? What is the invoicing process?
We support special VAT invoices (13% tax rate) and ordinary VAT invoices. Invoicing information (company name, tax ID, address & phone, bank name & account) must be provided in the order;
Invoicing process: Invoices will be issued within 7 working days after the balance payment is received, and sent via courier or e-invoice to the customer's designated email.

2.   What payment methods are accepted?
(1) Domestic orders: Bank transfer (corporate account), Alipay, WeChat Pay; Monthly/quarterly settlement negotiable for long-term cooperative customers;
(2) Export orders: T/T (Telegraphic Transfer), L/C (Letter of Credit), Western Union, etc. Specific payment terms can be agreed in the contract