Explosion-proof Corrugated Metal Hose

Product Introduction

Explosion‑proof corrugated metal hoses are high‑end, safety‑oriented pipeline fittings specially developed for flammable, explosive, and high‑risk chemical environments. Combining the exceptional flexibility of a corrugated structure with the antistatic and flame‑retardant properties of explosion‑proof materials, they effectively prevent static charge buildup and spark generation, thereby eliminating leakage and explosion hazards during the conveyance of flammable and explosive media. Hebei Jiuxing Rubber & Plastic Products Co., Ltd. has been deeply engaged in the industry for decades. Leveraging its expertise in explosion‑proof technology, the company manufactures explosion‑proof corrugated metal hoses that strictly comply with international explosion‑proof standards and have obtained multiple authoritative certifications. These products are suitable for a wide range of high‑risk operating conditions across various sectors. Below, we provide a detailed analysis from key perspectives—material, structure, dimensions, applications, and service scope—to help you make an informed selection and ensure safe, reliable use.  
Core material: explosion-proof specialized material, building a robust safety barrier.  
The core competitive advantage of explosion-proof corrugated metal hoses lies in their material’s explosion‑proof performance. They employ a proprietary combination of an explosion‑proof metal substrate and antistatic/flame‑retardant treatment, delivering exceptional resistance to pressure, temperature, and corrosion while ensuring reliable explosion protection. All materials have passed rigorous explosion‑proof testing and comply with the national GB 3836 series of explosion‑proof standards, effectively eliminating all safety hazards and making them ideally suited for high‑risk environments involving flammable and explosive substances.  
1. Core substrate: explosion-proof grade stainless steel/special alloy  
▫️ Mainstream materials: Premium 304 and 316L explosion-proof stainless steels (standard models); custom options include Hastelloy, titanium alloy, and other specialty alloys for high‑end, demanding applications. The base material undergoes antistatic treatment, with a surface resistivity ≤ 1×10⁸ Ω, enabling rapid dissipation of static electricity to prevent spark formation from charge buildup and eliminate potential explosion hazards at the source.  
▫️ Material characteristics: High mechanical strength, with a tensile strength exceeding 520 MPa; excellent corrosion resistance, capable of withstanding exposure to oil, gas, organic solvents, and other aggressive media; resistant to high temperatures and high pressures, making it suitable for extreme operating conditions in high‑risk applications; minimally prone to deformation or damage, with a service life far surpassing that of conventional corrugated metal hoses; key performance parameters fully aligned with explosion‑proof safety requirements.  
▫️ Key specifications: Temperature resistance range: −60°C to 450°C; continuous operating temperature: ≤350°C; pressure rating: 0.6 MPa to 40 MPa. Custom high-pressure reinforced models are available to suit specific operating conditions, enabling the conveyance of flammable and explosive media across various pressure classes.  
2. Explosion-proof protection treatment  
▫️ Antistatic Treatment: The pipe body, braided mesh, and fittings are all coated with a specialized antistatic finish, maintaining a surface resistance between 1×10⁴ Ω and 1×10⁸ Ω. This enables rapid dissipation of static electricity generated during fluid flow, preventing spark formation caused by static buildup, and making the product suitable for conveying flammable and explosive media such as oil, gas, and methanol.  
▫️ Flame‑retardant treatment: The outer woven mesh is constructed from flame‑retardant stainless steel wire and incorporates a flame‑retardant additive, ensuring it does not ignite or emit toxic fumes when exposed to open flames. This effectively inhibits fire spread, reduces losses from safety incidents, and is suitable for high‑temperature environments where flammability and explosiveness are compounded.  
3. Connector material: Explosion-proof integrated connector  
The fittings are made of the same material as the pipe body—explosion‑proof stainless steel or a specialized alloy—and are manufactured using explosion‑proof laser welding. The welds are smooth, robust, and free of burrs, with a leakage rate maintained below 1×10⁻⁹ Pa·m³/s to prevent any medium leakage. Each fitting incorporates an explosion‑proof seal that meets the sealing requirements for flammable and explosive media, and is also treated for electrostatic discharge, forming a complete antistatic system with the pipe body to eliminate static sparks at the joint. All fittings have passed explosion‑proof certification and can be directly connected to equipment used in high‑hazard environments.  
Product Structure: Explosion-proof design plus a corrugated core, balancing safety and compatibility.  
The explosion-proof corrugated metal hose employs a four‑dimensional integrated structure comprising an explosion‑proof corrugated tube, an antistatic braided mesh, explosion‑proof fittings, and a flame‑retardant protective layer. With its compact design and scientifically sound engineering, it combines the high flexibility of a corrugated structure—enabling multi‑directional displacement compensation—with comprehensive protection against explosions, static electricity, and fire. It is ideally suited to meet the complex installation and conveyance requirements of high‑risk environments. The key structural details are as follows:  
1. Core Structure Decomposition  
Inner layer: explosion‑proof corrugated metal pipe, manufactured using a precision cold‑rolling process with a forming tolerance of ±0.05 mm; the corrugations are uniform, enabling compensation for axial, lateral, and angular displacements (axial compensation up to 50 mm, lateral displacement up to 30 mm, and angular deflection up to ±15°). It absorbs equipment vibrations and thermal expansion/contraction stresses in the piping, thereby preventing pipe rupture and subsequent medium leakage.  
Middle layer: An antistatic, flame-retardant braided mesh with a braid density of ≥98%, woven from explosion-proof stainless steel wire. It provides antistatic, flame-retardant, and compression-resistant properties, enhancing the overall structural strength of the tube, preventing corrugated hose deformation, and rapidly dissipating static electricity to inhibit fire spread.  
Outer layer: Flame-retardant protective coating (optional), made of high-temperature‑resistant, flame‑retardant PVC/PU material with a thickness of 0.8 mm to 1.5 mm, further enhancing flame retardancy, abrasion resistance, and scratch resistance; suitable for outdoor use and high‑temperature, high‑risk environments, helping to prevent external factors from damaging the tube body.  
Connector: Explosion-proof integrated connector, welded integrally with the bellows; features built-in explosion-proof seals, anti-static and leak‑proof design. Connector type is customizable to match various equipment interfaces, ensuring a tight connection with no safety hazards.  
2. Structural Advantages  
▫️ All‑round explosion protection: featuring triple safeguards—anti‑static, flame‑retardant, and leak‑proof—this product complies with national explosion‑proof standards, allowing direct use in highly hazardous flammable and explosive environments while eliminating the risks of explosions and leaks.  
▫️ High Flexibility: Featuring a corrugated structure, it can bend and deflect freely, making it suitable for complex installation layouts in chemical plants, mines, oil and gas stations, and other environments—eliminating the need to adjust pipe routing, thus ensuring convenient installation and high efficiency.  
▫️ High compression and temperature resistance: Double-reinforced with an outer braided mesh and a metal corrugated tube, it delivers excellent compression and impact resistance, withstands high‑temperature and high‑pressure conditions, and is resistant to deformation and damage.  
▫️ Corrosion‑Resistant and Durable: Constructed from explosion‑proof stainless steel and specialty alloys, it withstands corrosion from oil, gas, organic solvents, and other media. Its service life is ≥8 years—significantly longer than that of standard corrugated metal hoses—helping to reduce replacement and maintenance costs.  
Dimensions and Specifications: Full range of sizes available, with support for explosion-proof customizations.  
Jiuxing rubber‑plastic explosion‑proof corrugated metal hoses are available in a full range of sizes and specifications, manufactured in strict compliance with explosion‑proof standards. Customization is offered to meet the demanding operating conditions of our customers, covering diameter, length, pressure rating, and other parameters, to accommodate varying flow rates of flammable and explosive media and diverse installation space requirements. All dimensions conform to GB/T and GB 3836 series standards; the key standard dimensions are as follows:  
1. Core Dimension Parameters  
Caliber specifications: DN4 to DN500 (￠4 mm to ￠500 mm), covering both small‑diameter precision conveying and large‑diameter bulk conveying, suitable for flammable and explosive media with varying flow rates (such as oil and gas, methanol, and chemical solvents).  
Length specifications: 0.5 m to 10 m (standard length), with custom lengths available up to 50 m; supports segmented connections, adapts to various installation spaces, and meets the pipeline layout requirements of high-risk environments.  
Pressure range: 0.6 MPa to 40 MPa; standard explosion-proof configurations are rated for 1.6 MPa to 25 MPa, while enhanced versions can be custom‑designed for high‑pressure, high‑risk applications, with pressure resistance exceeding 40 MPa.  
Anti-static parameters: surface resistivity ≤ 1×10⁸ Ω, compliant with the GB 3836.1-2010 explosion-proof standard, and capable of rapidly dissipating static electricity.  
Connection types: threaded connections (NPT, PT, G, metric threads), flanged connections (GB, ANSI, DIN standards), and quick‑connect fittings; all are explosion‑proof. Customization is available to match equipment interfaces.  
2. Customization Instructions  
We can customize explosion-proof corrugated metal hoses to meet customers’ demanding operating conditions, offering special diameters, lengths, and pressure ratings. We also provide custom‑made hoses from specialized alloy materials—such as Hastelloy and titanium alloys—to handle severe corrosive environments combined with flammable and explosive hazards. Additionally, we can incorporate an external flame‑retardant protective layer to enhance performance in outdoor and high‑temperature applications. We deliver a tailored explosion‑proof solution within 48 hours, complete sample delivery within 7 days, and finish production of bulk orders within two weeks. All custom products are fully certified to explosion‑proof standards.  
Core application: Focuses on high-risk scenarios and is suitable for the transport of flammable and explosive materials across multiple industries.  
Explosion-proof corrugated metal hoses are specifically designed for flammable, explosive, and high-risk environments. With comprehensive explosion‑proof, antistatic, and leak‑proof capabilities, they are widely used in hazardous sectors such as petrochemicals, coal chemicals, oil and gas extraction, and pharmaceutical chemical industries (particularly those handling flammable and explosive solvents). They effectively address safety risks associated with the conveyance of flammable and explosive media, ensuring operational safety.  
1. Petrochemical and Oil & Gas Extraction Sectors (Core Applications)  
▫️ Compatible media: flammable and explosive oil and gas media such as crude oil, natural gas, gasoline, diesel, and kerosene, as well as flammable and explosive solvents like methanol, ethanol, and acetone;  
▫️ Application scenarios: pipeline connections on oil drilling platforms, oil and gas transmission pipelines, reactor vessel interfaces in refineries, and pump‑valve joints. These components can withstand high temperatures, high pressures, and harsh outdoor conditions, effectively preventing explosions caused by static electricity or leaks, making them essential safety‑critical connectors in the oil and gas industry.  
2. Coal Chemical Industry Sector  
▫️ Compatible media: flammable, explosive, and volatile substances such as coal gas, methanol, and coal tar;  
▫️ Application scenarios: pipeline systems in coal‑chemical production workshops, gas‑transport pipelines, and equipment inlet/outlet connections; enables rapid dissipation of static electricity, preventing medium leakage that could trigger explosions, and is well suited to the high‑temperature, high‑pressure, and vibration‑prone hazardous operating conditions typical of the coal‑chemical industry.  
3. Other High-Risk Scenarios  
It is suitable for applications such as connecting chemical solvent storage tanks, transporting flammable and explosive materials via pipelines, and conveying mine gas (customized models), serving to convey flammable and explosive media while providing pipeline compensation. With its comprehensive explosion-proof performance, it ensures safety in high-risk environments and helps prevent accidents.  
Scope of Use: Clearly define explosion-proof boundaries for precise compatibility and enhanced safety.  
The explosion‑proof performance of explosion‑proof corrugated metal hoses is directly linked to their suitability for the operating conditions. The following sections delineate their applicable ranges and prohibited applications, helping you select the appropriate model and use it in compliance with standards, thereby maximizing production safety and mitigating potential risks.  
1. Applicable Operating Conditions Range  
Temperature range: -60°C to 450°C. For long-term use, it is recommended to keep the temperature between -40°C and 350°C to prevent aging of the explosion-proof protective layer and degradation of material properties due to exceeding the specified range.  
Pressure range: 0.6 MPa to 40 MPa; select the appropriate rating based on the medium’s pressure to prevent overpressure, which could cause pipe rupture and media leakage.  
Medium compatibility: All flammable and explosive media (such as oil and gas, solvents, coal gas, etc.); suitable for mildly corrosive flammable and explosive media; for highly corrosive and flammable/explosive media, a custom‑made special alloy version is required.  
Installation scope: petrochemical workshops, oil and gas stations, coal‑chemical plants, and other high‑hazard areas. Suitable for equipment connections, pipeline compensation, and medium transport; applicable in both indoor and outdoor settings (with adequate protection against rain and impact); capable of withstanding equipment vibration and pipeline displacement.  
2. Prohibited Use Cases  
Use is prohibited in non-explosion-proof applications (standard auxiliary conveying) to avoid wasting resources; it is recommended to use standard corrugated metal hoses instead.  
Use is prohibited under conditions of excessive temperature (＞450℃) or excessive pressure (＞40 MPa) to prevent failure of explosion-proof performance and rupture of the pipe body, which could lead to safety accidents.  
Use is prohibited in applications involving highly corrosive substances (such as concentrated acids or alkalis) unless a special alloy has been custom‑designed, to prevent material corrosion that could lead to leaks and failure of explosion‑proof integrity.  
Do not arbitrarily disassemble, bend, or pull the hose to prevent joint cracking and corrugated‑tube damage. The bending radius must be at least eight times the hose’s outer diameter. In addition, regularly inspect the explosion‑proof protective layer to ensure it remains intact and does not compromise explosion‑proof performance.  
Core Advantages of Jiuxing Rubber and Plastic Products  
As one of the world’s top ten hydraulic hose manufacturers, Jiuxing Rubber & Plastics focuses on the R&D and production of explosion‑proof hoses for high‑risk applications. Its explosion‑proof corrugated metal hose series, backed by cutting‑edge explosion‑proof technology, premium materials, and rigorous testing, has become an industry benchmark for hazardous environments. Our core strengths help customers fortify their safety safeguards and achieve efficient production:  
✅ Comprehensive explosion-proof certifications: Certified to the GB 3836 series, the U.S. API standards, and ISO 9001 quality management; all products undergo rigorous explosion-proof testing, meeting stringent safety requirements and enabling direct use in high-risk environments, thereby eliminating potential safety hazards.  
✅ Premium explosion-proof materials:选用 high‑grade explosion‑proof stainless steel and special alloys, combined with professional anti‑static and flame‑retardant treatments. The materials deliver stable performance, with excellent resistance to temperature, pressure, and corrosion, ensuring a service life of ≥8 years and reducing replacement and maintenance costs.  
✅ Customized Services: We can tailor pipe diameter, length, material, and pressure rating to meet customers’ high-risk operating conditions. We provide an explosion-proof custom solution within 48 hours, deliver samples within 7 days, and ensure rapid delivery for bulk orders, perfectly adapting to the specific needs of personalized high-risk applications.  
✅ All‑scenario compatibility: Covering high‑risk environments across multiple sectors, including petrochemicals, coal chemicals, and oil & gas extraction, we provide pre‑sale explosion‑proof equipment selection guidance, in‑sale installation consulting, and post‑sale explosion‑proof inspection and maintenance. With rapid global response, we ensure production safety.  
Selection Guide  
Key considerations in equipment selection: Based on the flammability and explosivity classification of the process medium, operating temperature, working pressure, flow rate, and installation space, precisely match material, dimensions, and specifications to ensure appropriate explosion‑proof performance and mitigate safety risks.  
1. For common flammable and explosive media (gasoline, methanol), select the 304 stainless steel explosion-proof model, with standard pressure ratings ranging from 1.6 MPa to 10 MPa.  
2. Highly corrosive and flammable/explosive media (including chlorinated solvents, oil and gas) → Select 316L stainless steel or a special alloy version, with custom thickened explosion-proof protection.  
3. High-pressure, high-risk applications (>10 MPa) → Choose the high-pressure reinforced model, featuring a thickened braided mesh to enhance pressure resistance and explosion-proof performance.  
4. Outdoor and high-temperature environments → Choose models with a flame-retardant protective layer to enhance wear resistance, heat resistance, and flame retardancy.  
5. Equipment connection and pipeline compensation → Select appropriate lengths and bend angles based on the installation space, ensuring explosion-proof sealing at joints and proper compatibility with equipment interfaces.  
Hebei Jiuxing Rubber and Plastic Products Co., Ltd. leverages expert explosion-proof technology, reliable product quality, and attentive customer service to provide you with a one-stop solution for explosion‑proof corrugated metal hoses. For custom products, guidance on explosion‑proof equipment selection, or information on product certifications, please feel free to contact us—helping you ensure safe, efficient operations in high‑risk environments.

Factory workshop

Jiuxing Rubber & Plastic is a 100% manufacturing enterprise specializing in hydraulic hoses and industrial hoses, covering all fields including oil and gas, agriculture, transportation, construction, mining and forestry.

Laboratory

Our factory has introduced a complete set of laboratory testing equipment. We possess advanced laboratory capabilities and can conduct product quality inspections and research and development work to ensure stable and excellent product quality.

After purchasing raw materials, we will test each batch to ensure it meets the technical requirements of our products.

After production is completed, we will test each hose, including its working pressure and burst pressure, and conduct pulse tests for each order to ensure 100% qualification of the factory-finished products.

We strive to provide customers with top-quality hoses and do everything possible to ensure their quality.

Product packaging and transportation

I. Order Confirmation  

After the order is placed, the customer service and the business team will immediately verify the product specifications, quantity, delivery date, and special requirements.   
After production is completed, a full inspection will be conducted to ensure that the size, performance, and appearance meet the standards. Only after passing the inspection can it proceed to the packaging stage.  

II. Professional Packaging  

According to the customer's requirements, the hydraulic hoses will be packed in cardboard boxes or wooden boxes.   
After the hoses are produced, we will pack them.   
Usually, woven bags and plastic films are used for packaging.   
Special packaging can be provided according to the customer's requirements. Special packaging is the requirement of the Edible ACC Ording customers.  

III. Loading and Transportation 

The professional loading and unloading team will operate in a standardized manner, load and unload gently, and stack reasonably to ensure the stability of the goods.   
Support domestic full truckload/less-than-truckload logistics, international sea freight, air freight, express delivery and designated freight forwarder transportation.   
The entire process is securely fixed to avoid squeezing， collision， and tipping， suitable for long-distance transportation.

IV. Tracking & Delivery - Goods Tracking and Delivery

After shipment, provide the full set of documents including the logistics tracking number / bill of lading / packing list, invoice, etc.   
Real-time follow-up of the logistics status, timely synchronization with the customer to ensure safe and punctual delivery.   
Support various trade terms such as FOB, CIF, CFR, etc., and provide a worry-free connection throughout the process.  

V. Payment Method:  

Order ≤ $10,000: 100% wire transfer for advance payment   
Order > $10,000: 30% wire transfer for advance payment, and settle the balance payment before shipment   
Support wire transfer (T/T) and letter of credit (L/C)