Shandong Shunye Stainless Steel Co., Ltd. is one of the most reliable manufacturers and suppliers of stainless steel thru hull fitting in China. We are specialized in providing high quality customized products with competitive price. Welcome to buy bulk cheap stainless steel thru hull fitting 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 & Brushed |
|
Component Type |
Threaded Bulkhead Connector with Hex Nut |
|
Weight Range |
0.3kg - 1.8kg |
|
Thread Type |
Fully Machined BSP / NPSM Straight Threads |
|
MOQ |
100 pcs |
|
OEM Service |
Available (Custom Thread Lengths & Flange Diameters) |
|
Machining |
CNC Thread Chasing & Face Turning Available |
|
Certification |
ISO9001 / CE / Material Certificate Supplied |
Available Materials
● Stainless Steel 316 (SS316 / CF8M for premium sub-waterline corrosion defense)
● Stainless Steel 316L (Ultra-low carbon variant ensuring stress-corrosion immunity)
● Duplex Stainless Steel 2205 (For military or high-speed commercial vessel rudders/hulls)
Features
✔Precision CNC Chased Threads: Full-length sharp, clean straight threads guarantee smooth nut travel and tight locking.
✔Integrated Heavy Hex Nut: Robust investment cast hex nut provides ample wrench flats for high-torque secure clamping.
✔Flawless Low-Profile Flange: Smooth circular flange design ensures a perfectly flush, hydrodynamic fit on boat hulls.
✔100% Pressure Dense Core: Advanced lost wax molding completely eliminates sub-surface microporosities to prevent weeping leaks.
✔Marine Grade Pitting Immunity: Genuine SS316 matrix offers elite protection against continuous saltwater immersion.
Applications
- Yacht & Commercial Boat Hull Plumbing
- Marine Bilge & Livewell Drainage Systems
- Chemical Liquid Storage Tank Bulkheads
- Water Treatment & Desalination Equipment
Production Capability
Max Single Weight: 5kg (We comfortably support common marine sizes from 1/2" up to 3")
Annual Capacity: 1000 Tons
Standard Lead Time: 45-60 Days
Thread Specialization: Our automatic multi-axis CNC lathe lines turn and chase straight marine threads strictly to international standards, avoiding cross-threading field complaints
Inspection & Quality Control
- Thread Ring Gauge Go/No-Go Verification
- Concentricity & Parallelism Testing
- Pneumatic Air-Under-Water Leak Testing
- Spectrometer Core Alloy Element Heat Verification
FAQ
Q: What thread standard do you use for your marine thru-hull fittings?
A: Our standard molds are optimized for standard marine straight threads like NPSM (National Pipe Straight Mechanical) and BSPP (British Standard Pipe Parallel). However, as a dedicated OEM foundry, we can completely customize the thread pitch, length, and diameter according to your specific engineering prints.
Q: Does this bulkhead fitting come complete with the hex locking nut and washer?
A: Yes. We supply the complete integrated OEM kit including the investment cast thru-hull body, matching heavy hex nut, and a flat stainless steel or friction washer to provide your buyers a retail-ready solution.
Q: Can you guarantee this component is safe for sub-waterline (below the waterline) installation?
A: Absolutely. Below-waterline parts demand zero compromises on quality. Our silica sol investment casting process produces incredibly dense, non-porous metallic grain structures that deliver elite structural strength and pressure tightness. Combined with 100% spectrometer material verification, our fittings are fully trusted by international boat builders for critical marine safety applications.
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