Hangzhou PRI-SAFETY Fire Technology Co., Ltd. is known as one of the most professional manufacturers and suppliers of various safety products in China. If the stainless steel fire extinguisher bottle factory meets your requirement, welcome to buy quality equipment made in China here from our factory. Our factory will offer you one stop service and one year warranty.
We PRI-SAFETY as a professional manufacturer of stainless steel extinguisher cylinders, we use high-grade SUS304 and SUS316L materials to ensure excellent corrosion resistance, high-pressure strength, and long service life. Precision forming, automatic welding, and strict hydrostatic testing guarantee consistent quality, safety, and reliability for global fire protection applications.

Products Description
PRI-SAFETY stainless steel extinguisher cylinders are highly corrosion-resistant, with a smooth, polished surface, making them suitable for various industrial applications, such as offshore industries, oil and gas industries, and commercial kitchens.
Our cylinders can be filled with a variety of high-tech liquid agents,
* Coldfire
* F-500EA
* Water Mist
* Clean Agent(FK-5112, FE-36, HFC-227ea)
* Foam(AFFF, AR-AFFF)
* FireAde2000
* Wet Chemical (Class F/K Fires)

Advantages
We employ advanced automatic welding technology to ensure precise seam formation, uniform wall thickness, and superior joint strength. Our controlled welding process minimizes heat-affected zones, prevents micro-cracks, and guarantees excellent pressure resistance. Every welded joint is inspected to ensure airtight integrity and long-term reliability under high-pressure operating conditions.
"Orbital Autogenous TIG Welding":
"We employ automated orbital TIG (GTAW) welding for a pure, autogenous weld-meaning no filler metal is used. This eliminates the risk of galvanic corrosion and creates a seamless, homogenous joint with superior metallurgical integrity, essential for containing high-pressure media."
"Advanced Weld Head Control & Monitoring":
"Our welding systems feature closed-loop control of all critical parameters: arc voltage, current, travel speed, and gas purity. Each weld is executed with micron-level precision, ensuring repeatability that far exceeds manual techniques."
"Precision Edge Preparation & Fixturing":
"We guarantee perfect weld joint alignment through CNC-machined edge preparation and proprietary fixtureing systems. This minimizes heat-affected zones (HAZ) and prevents internal or external misalignment, which are critical failure points in pressure vessels."
"In-Process Monitoring & Data Logging":
"Every weld is a data point. Our systems perform real-time monitoring, logging all parameters to a secure file. This provides full traceability and acts as a digital fingerprint for each bottle, proving consistent quality."

Stainless Steel Cylinder Specifications
1). Footing Ring Model & Female Neck Thread

| Capacity | 1L | 2L | 3L | 4L | 6L | 9L | 12L |
| Code | SSA-01 | SSA-02 | SSA-03 | SSA-04 | SSA-06 | SSA-09 | SSA-012 |
| Out-dia.(mm) | φ85 | φ110 | φ130 | φ140 | φ160 | φ180 | φ180 |
| Cylinder Length (mm) | 270 | 305 | 346 | 410 | 450 | 545 | 690 |
|
Cylinder Weight (kg)
|
0.66 | 1.20 | 1.69 | 2.1 | 2.95 | 3.6 | 4.4 |
|
Volume (L)
|
1.25 | 2.50 | 3.95 | 5.5 | 8.05 | 12.5 | 16.7 |
|
Working Pressure(bar)
|
14 | 14 | 14 | 14 | 14 | 14 | 14 |
|
Test Pressure(bar)
|
27 | 27 | 27 | 27 | 27 | 27 | 27 |
|
Material
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
2). European Bottom Model & Female Neck Thread

| Capacity | 1L | 2L | 3L | 4L | 6L | 9L | 12L |
| Code | SSB-01 | SSB-02 | SSB-03 | SSB-04 | SSB-06 | SSB-09 | SSB-012 |
| Out-dia.(mm) | φ85 | φ110 | φ130 | φ140 | φ160 | φ180 | φ180 |
| Cylinder Length (mm) | 270 | 305 | 346 | 410 | 450 | 545 | 690 |
|
Cylinder Weight (kg)
|
0.66 | 1.20 | 1.69 | 2.1 | 2.95 | 3.6 | 4.4 |
|
Volume (L)
|
1.25 | 2.50 | 3.95 | 5.5 | 8.05 | 12.5 | 16.7 |
|
Working Pressure(bar)
|
14 | 14 | 14 | 14 | 14 | 14 | 14 |
|
Test Pressure(bar)
|
27 | 27 | 27 | 27 | 27 | 27 | 27 |
|
Material
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
3). American Model Footing Ring & Male Neck Thread

| Capacity | 4L | 6L | 9L | 10L |
| Code | SSC-04 | SSC-06 | SSC-09 | SSC-10 |
| Out-dia.(mm) | φ140 | φ180 | φ180 | φ180 |
| Cylinder Length (mm) | 420 | 466 | 564 | 610 |
|
Cylinder Weight (kg)
|
2.1 | 2.95 | 3.6 | 4.4 |
|
Volume (L)
|
5.5 | 8.05 | 12.5 | 16.7 |
|
Working Pressure(bar)
|
14 | 14 | 14 | 14 |
|
Test Pressure(bar)
|
27 | 27 | 27 | 27 |
|
Material
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
SUS304
SUS304 1/2H
SUS316/SUS316L
|
4). Suspended Stainless Steel Cylinder with 68℃ Glass Bulb

|
Capacity
|
1kg | 3kg | 4.5kg | 6kg | 12kg |
|
Code
|
PSS-H01 | PSS-H03 | PSS-H04.5 | PSS-H06 | PSS-H012 |
|
Out-dia.(mm)
|
φ160 | φ240 | φ194 | φ298 | φ367 |
| Cylinder Length (mm) | 162 | 190 | 255 | 208 | 262 |
|
Cylinder Weight (kg)
|
0.6 | 1.4 | 2.2 | 2.7 | 4.5 |
|
Volume (L)
|
1.51 | 3.7 | 5.5 | 7.3 | 14.6 |
|
Filled Weight (kg)
|
1 | 3 | 4.5 | 6 | 12 |
|
Wroking Temperature
|
-10℃~50℃
|
-10℃~50℃
|
-10℃~50℃
|
-10℃~50℃
|
-10℃~50℃
|
|
Working Pressure(bar)
|
14 | 14 | 14 | 14 | 14 |
|
Test Pressure(bar)
|
27 | 27 | 27 | 27 | 27 |
| Material | SUS304 | SUS304 | SUS304 | SUS304 | SUS304 |
5.) Wheeled Fire Extinguishers

|
Capacity
|
25L | 50L | 75L | 100L |
|
Code
|
SSF-25/SSP-25
|
SSF-50/SSP-50
|
SSF-75/SSP-75
|
SSF-100/SSP-100
|
|
Out-dia.(mm)
|
φ300 | φ325 | φ406 | φ406 |
| Cylinder Length (mm) | 570 | 908 | 885 | 1150 |
|
Cylinder Weight (kg)
|
30 | 32 | 45 | 50 |
|
Volume (L)
|
30 | 60 | 85 | 120 |
|
Filled Capacity (L)
|
25 | 50 | 75 | 100 |
|
Wroking Temperature
|
0℃~60℃
|
0℃~60℃
|
0℃~60℃
|
0℃~60℃
|
|
Working Pressure(bar)
|
14 | 14 | 14 | 14 |
|
Test Pressure(bar)
|
27 | 27 | 27 | 27 |
| Material | SUS304 | SUS304 | SUS304 | SUS304 |
FAQ
1.What are the advantages of stainless steel fire extinguishers?
* Excellent corrosion and rust resistance
* Suitable for harsh and humid environments
* Long service life and low maintenance
* High strength and pressure resistance
* Elegant appearance for visible installations
* Ideal for marine, offshore, food, and chemical industries
2. What applications are stainless steel extinguishers suitable for?
They are ideal for:
* Marine vessels and offshore platforms
* Chemical plants and refineries
* Food processing facilities
* Pharmaceutical factories
* Clean rooms and laboratories
* High-end commercial buildings
3.How is quality controlled?
*Raw material inspection
*Welding and forming quality checks
*Pressure and leakage testing
*Valve and accessory inspection
* Final appearance and packaging inspection
4.What is the warranty period?
* We provide a standard warranty of 12 months from shipment.
* Extended warranty options are available upon request.
5.Can you provide OEM or private labeling?
Absolutely. We offer:
* OEM / ODM manufacturing
* Custom logo engraving or printing
* Customized labels, colors, and packaging
* Country-specific language labels
6.What are PRI-SAFETY advantages?
We offer:
* Different model SUS 304 Cylinders : European Model , American Model , Footing Ring Model etc.
* Multiple Raw materials: SUS304 , SUS304 1/2H , SUS316L, SUS316L etc.
* International standards and certifications:TUV CE Certification,ISO 9001 – Quality Management System ,TPED etc.
* Advanced welding technology produces strong, flat, and smooth welds, effectively preventing edge oxidation and significantly enhancing corrosion resistance.
* With years of experience partnering with leading fire protection companies, we deliver reliable and professional solutions.
Packing & Shipping


