Haosail cage system mainly includes: cage handrail pipe, cage floating pipe, anti-slip pedal, cage fittings etc. All these parts are made from Grade 100 HDPE, using advanced molding equipment, mature production technology and completed inspection method, to ensure them comply with national standard and industry standard.
Deep-sea aquaculture has rapidly evolved as a vital component of global food security, offering a sustainable pathway to meet the escalating demand for seafood while alleviating pressure on overexploited wild fish populations. At the heart of modern offshore aquaculture systems, particularly those utilizing cage-based farming, lies a critical structural element: the floating framework that supports the entire operation. Among the materials employed for this purpose, High-Density Polyethylene (HDPE) has emerged as the material of choice for main floating pipes, revolutionizing the industry with its unique combination of durability, adaptability, and environmental compatibility. This article provides a holistic introduction to HDPE main floating pipes, exploring their role in deep-sea aquaculture, their inherent advantages, and their contribution to the advancement of sustainable marine farming practices.
Tee and Elbow connectors are essential components in aquaculture cage systems, designed to ensure secure and flexible structural connections. Made from corrosion-resistant materials like galvanized steel, stainless steel, or HDPE, these fittings withstand harsh marine environments, including saltwater exposure and UV radiation. The **Tee connector** enables three-way junctions, allowing seamless branching of cage frames, pipes, or walkways, while maintaining structural integrity and load distribution. Its smooth inner surface minimizes friction, promoting efficient water flow and reducing debris buildup.
The Elbow connector, available in standard angles such as 90° or 45°, facilitates directional changes in cage frameworks or piping systems. This is critical for adapting to uneven seabeds, optimizing space in floating setups, or integrating with equipment like feeding lines and sensor arrays. Both connectors feature reinforced joints and compatibility with modular designs, enabling quick assembly, disassembly, or reconfiguration of cages without compromising stability.
Engineered for durability and low maintenance, these connectors resist rust, chemical degradation, and biofouling, ensuring long-term performance in freshwater or marine applications. Their lightweight yet robust construction simplifies handling and reduces transportation costs. Ideal for fish farms, research platforms, or temporary installations, Tee and Elbow connectors enhance adaptability, operational efficiency, and safety across diverse aquaculture projects. Custom sizes and material options are available to meet specific environmental or load-bearing requirements.
Stock No. |
Product Name |
size(L*W*H mm) |
HSM020206001 |
Handrail Tee T-H01 |
110/90 |
HSM020206002 |
Handrail Tee T-H02 |
125/110 |
HSM020206003 |
Handrail Tee T-H03 |
140/125 |
HSM020206004 |
Handrail Tee T-H04 |
160/140 |
HSM020206005 |
Handrail Tee T-H05 |
180/160 |
HSM020206006 |
Floating Tee TS-F01 |
250 |
HSM020206007 |
Floating Tee TS-F02 |
400 |
HSM020206008 |
Floating Tee TS-F03 |
500 |
HSM020206009 |
Floating Tee T-F01 |
200/200 |
HSM020206010 |
Floating Tee T-F02 |
250/250 |
HSM020206011 |
Floating Tee T-F03 |
315/315 |
HSM020206012 |
Floating Tee T-F04 |
400/400 |
HSM020206013 |
Floating Tee T-F05 |
500/500 |
HSM020206014 |
Handrail Elbow E-H01 |
90 |
HSM020206015 |
Handrail Elbow E-H02 |
110 |
HSM020206016 |
Handrail Elbow E-H03 |
125 |
HSM020206017 |
Handrail Elbow E-H04 |
140 |
HSM020206018 |
Handrail Elbow E-H05 |
160 |
HSM020206019 |
Floating Elbow E-F01 |
200 |
HSM020206020 |
Floating Elbow E-F02 |
250 |
HSM020206021 |
Floating Elbow E-F03 |
315 |
HSM020206022 |
Floating Elbow E-F04 |
400 |
HSM020206023 |
Floating Elbow E-F05 |
500 |
Qingdao Haosail machinery Co., Ltd. is located in Qingdao, the central ocean city in northern China, and it is a national high-tech enterprise and technology innovation enterprise. Our company focuses on the R & D and production of the intelligent solution of deep-sea aquaculture equipment. Relying on advanced technology and reliable equipment, our company has long-term in-depth cooperation with customers in more than 20 countries such as United States, Australia, Singapore, Poland and Ukraine.
Our company takes scientific and technological innovation as the driving force, inherits the enterprise culture of "Haosail, worthy of your trust", and builds the company into a brand enterprise with a sense of mission and competitiveness.

HDPE, lightweight high-strength alloy materials and other new materials are adopted in the structure. Computer control, various anti-corrosive, anti fouling (attachments) and anti-aging technologies greatly improve the overall structural strength and flexibility of deep-sea aquaculture net cage, double the service life of the cage, highly reduce the daily maintenance and the cost of aquaculture in unit volume, and improve economic benefits.
Advantages of our cage bracket:
- Reduces structural stress on cages, lowering long-term repair costs.
- Lightweight yet durable, enabling easy transport and handling.
- Compatible with automated feeding systems and sensor-based monitoring tools.
- Customizable coatings (e.g., antifouling) or sizes available for specialized projects.

- Question: What are the characteristics of the material used in HDPE fish cages?
- Answer: HDPE (High - Density Polyethylene) material features high strength, corrosion resistance, aging resistance, and abrasion resistance. It can be used for a long time in complex marine environments like seawater. It is not easily corroded by seawater and can resist the irradiation of ultraviolet rays, thus prolonging the service life of the fish cage.
- Question: How stable is the structure of HDPE fish cages?
- Answer: HDPE fish cages usually adopt a reasonable frame structure design. The HDPE pipes are connected into a stable frame through special connection methods. This structure can withstand the impact of external forces such as wind and waves to a certain extent, ensuring the stability of the fish cage in the marine environment. However, the specific stability is also related to factors such as the size of the fish cage, the installation method, and the environmental conditions of the sea area where it is located.
- Question: How should HDPE fish cages be maintained on a daily basis?
- Answer: Daily maintenance includes regularly checking whether the netting of the fish cage is damaged, and whether there are cracks or damage to the HDPE frame, such as algae and shellfish on the surface of the fish cage should be cleaned in a timely manner to ensure the normal exchange of water. At the same time, check whether the mooring system is firm to ensure the fixed position of the fish cage in the sea. In addition, pay attention to the operating conditions of aquaculture equipment such as aerators and feeders, and carry out maintenance and upkeep regularly.
- Question: What is the approximate service life of HDPE fish cages?
- Answer: Under normal use and reasonable maintenance, the service life of HDPE fish cages is generally 10 - 20 years. However, if the sea area environment is harsh, or if it is severely damaged by external forces during use and not properly maintained, its service life may be shortened.
- Question:What maintenance technologies are employed for circular fish farming cages?
Answer: Haosail coppor alloy cage net can be used on this circular fish farming cage to highly reduce the maintainance cost, also advanced automation includes robotic cleaning brushes driven by motors will be used to remove algae from normal net automatically. Both of these can reduce manual labor and improves efficiency.