Shandong Shunye Stainless Steel Co., Ltd. is one of the most reliable manufacturers and suppliers of stainless steel thru hull barb in China. We are specialized in providing high quality customized products with competitive price. Welcome to buy bulk cheap stainless steel thru hull barb made in Chin here from our factory. Contact us for quotation.
Specifications
|
Project |
Content |
|
Process |
Silica Sol Investment Casting + Precision CNC |
|
Material |
SS316 / SS316L / CF8M |
|
Surface Finish |
Fine Machined & Sandblasted |
|
Component Type |
Threaded Bulkhead Skin Fitting with Hose Barb |
|
Weight Range |
0.25kg - 1.5kg |
|
Thread Type |
Fully Machined Straight Threads (BSPP / NPSM Standard) |
|
MOQ |
100 pcs |
|
OEM Service |
Available (Custom Barb Diameters, Thread Lengths & Flange Layouts) |
|
Machining |
CNC Thread Chasing, Face Turning & Barb Profiling |
|
Certification |
ISO9001 / CE / Material Certificate Traceability Sheet Provided |
Available Materials
● Stainless Steel 316 (SS316 / CF8M for elite defense against continuous saltwater pitting below the waterline)
● Stainless Steel 316L (Ultra-low carbon variant ensuring maximum weld ductility and stress-corrosion immunity)
● Duplex Stainless Steel 2205 (For severe coastal infrastructure or high-speed naval vessel hulls)
Features
✔2-in-1 Threaded Barb Setup: Combines full-length external locking threads with a multi-stage ridge hose barb for direct hose joining.
✔Precision CNC Turned Barb: Deeply grooved bamboo ridges ensure high-friction, airtight gripping on industrial or marine hoses.
✔Flawless Low-Profile Flange: Perfectly flat circular flange provides a flush, hydrodynamic seal against boat hulls.
✔100% Porosity Free Core: Advanced lost wax ceramic tooling eliminates micro-gas holes, ensuring air-tight pressure sealing under waterlines.
✔Marine-Grade Pitting Immunity: Genuine high-nickel SS316 alloy chemistry actively fights tea-staining and pooling rust.
Applications
- Yacht & Commercial Boat Hull Plumbing
- Marine Bilge & Livewell Aeration Systems
- Chemical Liquid Storage Tank Bulkheads
- Water Treatment & Desalination Equipment
Production Capability
Max Single Weight: 5kg (We comfortably support common commercial marine sizes from 3/4" up to 3")
Annual Capacity: 1000 Tons
Standard Lead Time: 45-60 Days
CNC Thread Chasing Specialization: Our automatic multi-axis lathe lines turn the barb profile and chase straight marine threads in high precision to guarantee perfect concentricity and ease of field assembly
Inspection & Quality Control
- Thread Ring Gauge Go/No-Go Verification
- Barb Diameter and Ridge Sharpness Digital Calibration
- Pneumatic Air-Under-Water Leak Testing
- Spectrometer Core Alloy Element Heat Verification (100% Material Tracing Tracking)
FAQ
Q: What thread standard and hose sizes are your thru-hull barb fittings optimized for?
A: Our standard production lines follow international marine piping rules, utilizing NPSM or BSPP straight threads, with the barb tail optimized for standard marine hoses (e.g., 3/4", 1", 1-1/2", 2"). However, as a dedicated contract manufacturing foundry, we can micro-adjust the CNC programsettings to turn custom thread pitches and custom millimeter barb diameters based on your drawings.
Q: Do you supply the matching bronze or stainless steel backing hex nuts and rubber washers together with this fitting?
A: Yes, absolutely. We operate as a full-service OEM contract manufacturing partner. We can cast and machine matching heavy-duty stainless hex nuts and supply premium marine-grade rubber or friction gaskets, providing your international wholesale buyers a true turnkey solution.
Q: Why choose an investment cast thru-hull barb instead of welding a machined barb onto a threaded pipe?
A: Multi-component separate welded fittings experience intense stress concentrations below the waterline and frequently suffer sudden structural snaps or severe intergranular rust at the seam line under fluid shockwaves. Our silica sol investment casting outputs a fully uniform, single-piece dense metal layout with zero porosity, delivering ultimate safety limits and lifelong corrosion protection.
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