Skip to main content
Home / Hand Gongs / Sanjuban Set: Copper Gongs, Drums, and Cymbals, Plated or Pure Copper, 15cm/32cm/42cm Sizes for Flood Warning

Attributes

Brand -
Category Musical Instruments/Guitars/Pianos/Accessories / Hand Gongs
Origin -
Material Composition High-grade pure copper with optional gold plating
Set Components Includes one gong, one drum, and one pair of cymbals
Available Sizes 15cm, 32cm, and 42cm diameter options
Primary Application Traditional flood warning signals and community alerts
Sound Profile Deep, resonant tone capable of long-distance travel
Mounting Hardware Reinforced steel frame and heavy-duty suspension ropes included
Finish Type Hand-polished surface for weather resistance
Weight (42cm Set) Approximately 8.5 kg total package weight
Origin Artisan crafted using traditional metallurgy techniques
Maintenance Requires occasional polishing to maintain acoustic clarity

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 4/5

Beautiful craftsmanship, loud tone

Bought this for a cultural demonstration, but it works perfectly for its intended warning purpose too. The copper finish is stunning. Only giving 4 stars because the stand assembly instructions were slightly vague.

A

Anonymous

Mar 29, 2026

Rating: 5/5

Excellent clarity for emergency use

We purchased the 42cm set for our village flood defense team. The sound carries incredibly well over the river noise, ensuring everyone hears the warning immediately. The build quality is solid.

A

Anonymous

Mar 19, 2026

Rating: 4/5

Great value for a complete set

Getting the gong, drum, and cymbals together saved us money. The cymbals are particularly sharp and cut through wind noise effectively. Shipping took a bit longer than expected.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Superior to electronic sirens

In areas where power might fail during a storm, this mechanical set is invaluable. The 32cm size provides the perfect balance between portability and volume. Highly recommended.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Reliable in all weather conditions

Has been mounted outside for six months through rain and sun. The plating holds up well, and the sound has not degraded. Essential equipment for our coastal monitoring station.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Authentic and powerful

The resonance of the pure copper is unmatched. We use this for both ceremonial purposes and as a backup alert system. It feels like a piece of history that still serves a vital modern function.

5 FAQ

Q: What is the effective range of the sound for the 42cm gong?

A: Under normal atmospheric conditions, the 42cm gong can be clearly heard up to 1.5 kilometers away, depending on terrain and wind direction.

Q: Do you offer replacement beaters or mallets?

A: Yes, we sell hardened wood and rubber-tipped mallets separately. Please check the accessories section of our store for compatible sizes.

Q: Can these instruments withstand continuous outdoor exposure?

A: Yes, the Sanjuban sets are treated with a protective finish designed to resist oxidation and weather damage, making them suitable for permanent outdoor installation.

Q: Is the 15cm size loud enough for a small neighborhood alert?

A: The 15cm model is best suited for immediate vicinity alerts or indoor use. For neighborhood-wide warnings, we strongly recommend the 32cm or 42cm models.

Q: How difficult is it to mount the frame on a concrete wall?

A: The kit includes anchor bolts for masonry. While the process is straightforward, we recommend two people for installation due to the weight of the larger units.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Shenzhen Custom Storefront Signage and Lightbox Installation - Illuminated Letters and Shop Plaques

Shenzhen Custom Storefront Signage and Lightbox Installation - Illuminated Letters and Shop Plaques

$50.00

Automotive AC Refrigerant Gauge Set – R134a Pressure Meter with Dual Valve Tool for Home R22/R410 Air Conditioning Systems

Automotive AC Refrigerant Gauge Set – R134a Pressure Meter with Dual Valve Tool for Home R22/R410 Air Conditioning Systems

$329.00

Complete Collection of Taoist Talisman Art Copybooks - Zhengyi Thirty-Six Generals, Calligraphy Practice Sheets with Stroke Order and Red Tracing, Classic Taoist Calligraphy

Complete Collection of Taoist Talisman Art Copybooks - Zhengyi Thirty-Six Generals, Calligraphy Practice Sheets with Stroke Order and Red Tracing, Classic Taoist Calligraphy

$38.00

Marie's Blending Knife Replacement Head Set Sketch Blending Tools Sponge Stumps Paper Stumps for Art Students

Marie's Blending Knife Replacement Head Set Sketch Blending Tools Sponge Stumps Paper Stumps for Art Students

$4.25

French Imported Arches Watercolor Paper - Handmade 100% Cotton, 300g-850g, Medium/Rough Grain, Extra-Large Rolls and Sheets (4K, Full, Half, Quarter)

French Imported Arches Watercolor Paper - Handmade 100% Cotton, 300g-850g, Medium/Rough Grain, Extra-Large Rolls and Sheets (4K, Full, Half, Quarter)

$33.10

Commercial Countertop Food Warmer Display Case - For Fried Chicken, Burgers, Egg Tarts, Pies, Youtiao, and Shaobing

Commercial Countertop Food Warmer Display Case - For Fried Chicken, Burgers, Egg Tarts, Pies, Youtiao, and Shaobing

$720.00

Integrated Hospital Wastewater Treatment Unit Underground Integrated Sanitary System Sewage Discharge Unit Eco-Friendly Wastewater

Integrated Hospital Wastewater Treatment Unit Underground Integrated Sanitary System Sewage Discharge Unit Eco-Friendly Wastewater

$10,000.00

Double Loop Lifting Chain with Rebar Bottom Hook - Manganese Steel Sling for Heavy Duty Rigging

Double Loop Lifting Chain with Rebar Bottom Hook - Manganese Steel Sling for Heavy Duty Rigging

$29.00

Screw Press Screw Sludge Dewatering Machine Sewage Treatment Equipment Rotary Type

Screw Press Screw Sludge Dewatering Machine Sewage Treatment Equipment Rotary Type

$17,600.00

Imported INA Needle Roller Bearings: 9NA, NA 2940, 4R22, 4924, 4926, 4928, 4930-XL A

Imported INA Needle Roller Bearings: 9NA, NA 2940, 4R22, 4924, 4926, 4928, 4930-XL A

$109.00

High-Purity Nitrogen Generator for Reflow Soldering and Wave Soldering - Efficient Energy-Saving Transformer Protection for Electronics Factories

High-Purity Nitrogen Generator for Reflow Soldering and Wave Soldering - Efficient Energy-Saving Transformer Protection for Electronics Factories

$46,100.00

Baohong Watercolor Paper 300g Wood Pulp Medium Grain A3 Full Sheet, Coarse/ Fine Grain Academy Grade 4K, A2, A1, A4 Artist Paper 2K for Art Students

Baohong Watercolor Paper 300g Wood Pulp Medium Grain A3 Full Sheet, Coarse/ Fine Grain Academy Grade 4K, A2, A1, A4 Artist Paper 2K for Art Students

$3.40

Manyue Handmade Natural Soy Wax and White Beeswax for DIY Low-Temperature Scented Candles – Includes Candle Cups and Jelly Wax

Manyue Handmade Natural Soy Wax and White Beeswax for DIY Low-Temperature Scented Candles – Includes Candle Cups and Jelly Wax

$5.46

Car Tire Stone Removal Tool Hook and Rake for Cleaning Tread Debris

Car Tire Stone Removal Tool Hook and Rake for Cleaning Tread Debris

$4.53

Caiyan Blending Sticks for Oil Pastels and Sketching, Dual-Tip Soft Wax Crayon Tools for Art Students, DIY Smudging, Highlighting, and Color Mixing

Caiyan Blending Sticks for Oil Pastels and Sketching, Dual-Tip Soft Wax Crayon Tools for Art Students, DIY Smudging, Highlighting, and Color Mixing

$8.20

Aizaofang Six-Cavity Leaf Stamp Silicone Mold for DIY Handmade Soap, Approx. 108g per Bar

Aizaofang Six-Cavity Leaf Stamp Silicone Mold for DIY Handmade Soap, Approx. 108g per Bar

$16.90

Sea to Summit Outdoor Rafting Waterproof Dry Bag Storage Backpack for Clothes, Large River Waterproof Bag 420D

Sea to Summit Outdoor Rafting Waterproof Dry Bag Storage Backpack for Clothes, Large River Waterproof Bag 420D

$83.30

Natural 5A Gold Rutilated Quartz Loose Beads - DIY Crystal Jewelry Making Supplies, Round Single Beads

Natural 5A Gold Rutilated Quartz Loose Beads - DIY Crystal Jewelry Making Supplies, Round Single Beads

$2.56

Rubber Cable Raceway and Speed Bump with Movable Cover

Rubber Cable Raceway and Speed Bump with Movable Cover

$31.44

Manufacturer Shaftless Conveyor Uniform Transport No Backflow Customizable Sizes Two-Year Warranty

Manufacturer Shaftless Conveyor Uniform Transport No Backflow Customizable Sizes Two-Year Warranty

$7,455.00

Curved Commercial Steamed Bun Machine - Small Glass Display Cabinet for Convenience Stores, Mantou Warmer, Baozi Steamer, Corn Warmer

Curved Commercial Steamed Bun Machine - Small Glass Display Cabinet for Convenience Stores, Mantou Warmer, Baozi Steamer, Corn Warmer

$338.00

U-Shaped Rubber Sealing Strip, N-Edge Rubber Strip, Edge Wrapping Strip, Iron Sheet Decorative Strip, Rubber Edge Sealing Strip

U-Shaped Rubber Sealing Strip, N-Edge Rubber Strip, Edge Wrapping Strip, Iron Sheet Decorative Strip, Rubber Edge Sealing Strip

$102.00

Rongbaozhai Calligraphy Felt Mat - Creative Printed Desk Pad for Brush Writing and Chinese Painting

Rongbaozhai Calligraphy Felt Mat - Creative Printed Desk Pad for Brush Writing and Chinese Painting

$14.20

Car Tire Stone Hook, Multi-Function Rust-Resistant Tool for Removing Stones, Picking, and Scraping Tire Debris

Car Tire Stone Hook, Multi-Function Rust-Resistant Tool for Removing Stones, Picking, and Scraping Tire Debris

$8.33

Hanmo Brocade Wrist Rest Traditional Four Treasures Study Gourd-Shaped Arm Pad Calligraphy Hand Pillow Artistic Fresh Wrist Rest

Hanmo Brocade Wrist Rest Traditional Four Treasures Study Gourd-Shaped Arm Pad Calligraphy Hand Pillow Artistic Fresh Wrist Rest

$9.10

West Coast Chicano Script Art, Glowing Decorative Painting for Shop Opening Gifts and Living Room Background Walls

West Coast Chicano Script Art, Glowing Decorative Painting for Shop Opening Gifts and Living Room Background Walls

$430.00

G80 Heavy Duty Chain SHQ - 2m/6m/8m/10m Short Chains for Manual Chain Hoists

G80 Heavy Duty Chain SHQ - 2m/6m/8m/10m Short Chains for Manual Chain Hoists

$8.51

Commercial Food Warmer Small Heating Thermostat Display Cabinet Countertop Chestnut Egg Tart Bread Glass Cooked Food Cabinet

Commercial Food Warmer Small Heating Thermostat Display Cabinet Countertop Chestnut Egg Tart Bread Glass Cooked Food Cabinet

$188.00

Eye-Protection Highlighter Pens for Elementary Students - Colored Markers for Key Points, Note-Taking for Middle Schoolers, Journaling Pens

Eye-Protection Highlighter Pens for Elementary Students - Colored Markers for Key Points, Note-Taking for Middle Schoolers, Journaling Pens

$1.51

Play Instantly! Steel Tongue Drum Starter Kit with Smart Practice App and Full Accessories - Perfect for Personal Use or Gifting

Play Instantly! Steel Tongue Drum Starter Kit with Smart Practice App and Full Accessories - Perfect for Personal Use or Gifting

$338.00