Stainless Steel Thru Hull Barb

Stainless Steel Thru Hull Barb

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
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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

Product Type

Stainless Steel Thru Hull Barb (Through-Hull Hose Barb Fitting / Hull Mount Hose Connector), Stainless Steel Investment Casting, for Marine & Boat Plumbing Hose Connections

Material

SS316 / SS316L / SS304 Stainless Steel (Investment Casting / Precision Machining / Mirror Polishing)

Hose Barb Size

6mm to 50mm Hose ID / Various Barb Sizes (8mm, 10mm, 12mm, 16mm, 19mm, 25mm, 32mm, 38mm, 50mm)

Thread Size

1/4" to 2" NPT / BSP / BSPT / Metric Threads / Custom Thread Sizes

Hull Thickness

Up to 50mm / Custom Hull Thickness Options Available

Pressure Rating

Up to 150 PSI / 10 Bar / Custom Pressure Ratings Available

Temperature Range

-40°C to +150°C (-40°F to +302°F) / Custom Temperature Ranges Available

Application

Marine & Boating, Boat Plumbing, Bilge Pumps, Livewell Systems, Cooling Systems, Water Intake, Waste Systems, Fuel Systems, General Marine Hose Connections

MOQ

20 pcs / Custom MOQ Available for Large Projects

OEM Service

Available (Custom Sizes, Shapes, Threads, Finishes, Packaging & Branding)

Certification

ISO 9001 / CE / RoHS / REACH / Salt Spray Test Certified / Marine Grade Certified

 

Available Materials & Configurations

SS316 / SS316L Stainless Steel - Marine-grade stainless steel with superior corrosion resistance for saltwater and high-humidity marine environments, ideal for through-hull fittings and boat plumbing applications

● SS304 Stainless Steel - Good corrosion resistance for freshwater and general marine applications, cost-effective choice for less corrosive environments

● Hose Barb Size Range: 6mm to 50mm hose ID with various barb sizes (8mm, 10mm, 12mm, 16mm, 19mm, 25mm, 32mm, 38mm, 50mm) to suit various hose sizes and marine plumbing requirements

● Thread Size Options: 1/4" to 2" NPT, BSP, BSPT, metric threads and custom thread sizes to suit various piping system and connection requirements

● Finish Options: Mirror polished, satin brushed, bead blasted and custom finishes, providing aesthetic appeal and corrosion protection for marine applications

 

Why Choose Our Stainless Steel Thru Hull Barbs?

 

Marine-Grade Stainless Steel Construction: Manufactured from high-quality SS316/316L marine-grade stainless steel, providing superior corrosion resistance, high strength, durability and long-lasting performance in saltwater and high-humidity marine environments, ideal for through-hull fittings and boat plumbing applications.

Precision Investment Cast & Machined: Our precision investment casting process combined with CNC machining produces thru hull barbs with precise dimensional control, smooth surfaces, consistent wall thickness and clean, professional appearance, ensuring reliable performance, secure hose connections and leak-free operation.

Wide Hose Barb Size Range: Available in hose barb sizes from 6mm to 50mm hose ID with various barb sizes, providing versatility for various hose sizes, from small bilge pump tubing to large cooling system hoses, with secure, leak-free hose connections.

Multiple Thread & Size Options: Available with 1/4" to 2" NPT, BSP, BSPT, metric threads and custom thread sizes, with various hull thickness options (up to 50mm), providing installation flexibility for various boat hull thicknesses and piping system configurations.

Secure Hose Barb Design: Precision-machined hose barbs with sharp, well-defined barb ridges provide secure, leak-free hose connections, preventing hose disconnection under pressure, vibration and thermal cycling, with multiple barb ridges for enhanced holding power.

High Pressure & Temperature Capability: Robust construction with high pressure rating (up to 150 PSI / 10 Bar) and wide temperature range (-40°C to +150°C), providing reliable performance in various marine plumbing applications, including bilge pumps, cooling systems and water intake systems.

Mirror Polished Finish: Available with mirror polished, satin brushed, bead blasted and custom finishes, providing aesthetic appeal, corrosion protection and easy cleaning for marine applications, with smooth, crevice-free surfaces that resist corrosion and biofouling.

Easy Installation & Maintenance: Through-hull design with threaded body and backing nut provides easy installation from inside the boat, with secure mounting and leak-free sealing, and easy maintenance for hose inspection, cleaning and replacement.

Full Quality Assurance & Certification: Every thru hull barb is manufactured under strict quality control with ISO 9001, CE, RoHS, REACH, salt spray test and marine grade certification, with dimensional inspection, pressure testing, leak testing, corrosion testing and surface finish inspection, ensuring reliable performance and long-lasting durability in marine environments.

 

Applications

 

Bilge Pump Systems: Stainless steel thru hull barbs for bilge pump discharge and intake applications, including manual bilge pumps, electric bilge pumps, automatic bilge pumps and high-capacity bilge pump systems, providing reliable hose connections for bilge water removal and discharge.

Livewell & Baitwell Systems: Stainless steel thru hull barbs for livewell and baitwell systems, including recirculating livewells, bait tanks, aeration systems and water circulation systems, providing reliable hose connections for livewell water intake, discharge and recirculation.

Engine Cooling Systems: Stainless steel thru hull barbs for marine engine cooling systems, including raw water cooling, closed cooling systems, heat exchangers, oil coolers and transmission coolers, providing reliable hose connections for cooling water intake, discharge and circulation.

Water Intake & Seacock Systems: Stainless steel thru hull barbs for water intake and seacock systems, including raw water intakes, cockpit drains, deck drains and scupper systems, providing reliable hose connections for water intake, drainage and through-hull plumbing connections.

Waste & Sanitation Systems: Stainless steel thru hull barbs for marine waste and sanitation systems, including holding tank vents, waste discharge, macerator pumps and sanitation hose connections, providing reliable, corrosion-resistant hose connections for marine waste and sanitation systems.

Fuel & Diesel Systems: Stainless steel thru hull barbs for marine fuel and diesel systems, including fuel tank vents, fuel fills, diesel transfer systems and fuel hose connections, providing reliable, corrosion-resistant hose connections for marine fuel and diesel systems (check compatibility with specific fuel types).

General Marine Plumbing: Various general marine plumbing applications requiring through-hull hose connections, including boats, yachts, ships, marine equipment, boat plumbing, marine water systems and custom marine plumbing systems.

Custom & Specialty Marine Applications: Custom and specialty marine applications, including custom boat builds, boat restoration, specialty marine equipment, research vessels, commercial fishing boats and custom marine plumbing projects, providing custom sizes, designs and configurations for specialty marine applications.

 

Quality Control & Testing

 

Raw Material Inspection: Spectrometer analysis for every heat of stainless steel, verifying chemical composition against SS316/316L/304 specifications with full material traceability and material test reports (MTR).

Casting & Machining Process Control: In-process monitoring of wax injection, shell building, dewaxing, pouring temperature, cooling rates and CNC machining parameters for thru hull barb castings and machined components.

Dimensional Inspection: CMM inspection for critical dimensions, including hose barb diameter, barb ridge dimensions, thread dimensions, overall dimensions, wall thickness, flange dimensions and hull thickness, with full dimensional reports available upon request.

Thread Inspection: Thread gauge inspection, thread pitch inspection, thread depth inspection and thread quality inspection for NPT, BSP, BSPT and metric threads, ensuring proper thread fit and reliable threaded connections, with thread inspection reports available upon request.

Pressure & Leak Testing: Hydrostatic pressure testing at 1.5 times rated pressure and pneumatic leak testing at rated pressure, ensuring no leakage and reliable pressure containment, with pressure and leak test certificates available upon request.

Hose Retention Testing: Hose pull-off testing, hose retention testing and vibration testing to verify secure hose connections and prevent hose disconnection under pressure, vibration and thermal cycling, with hose retention test reports available upon request.

Corrosion Testing: Salt spray testing (ASTM B117 / ISO 9227), humidity testing and chemical exposure testing to verify corrosion resistance, ensuring fittings maintain appearance and performance in saltwater and high-humidity marine environments, with corrosion test reports available upon request.

Surface Finish & Polishing Inspection: Visual inspection, surface roughness measurement, polishing quality inspection and mirror finish inspection for cast, machined and polished surfaces, ensuring consistent, high-quality surface appearance and proper corrosion resistance for marine applications.

Certification & Documentation: Full documentation package available, including material test reports (MTR), pressure test certificates, leak test certificates, corrosion test reports, dimensional inspection reports, certificates of conformity and third-party inspection reports (Lloyd's, BV, SGS, TUV, DNV).

 

Comparison: Stainless Steel Thru Hull Barb vs. Alternative Materials

 

Material

Corrosion Resistance

Strength

Aesthetic Appeal

Cost

SS316 Stainless Steel

Excellent (Marine Grade)

High

Excellent (Mirror Polish)

Medium-High

SS304 Stainless Steel

Good

High

Good

Medium

Bronze

Excellent

Medium

Fair

High

Brass

Good

Medium

Fair

Medium

Plastic / Nylon

Excellent

Low

Fair

Low

 

For marine through-hull hose barb applications requiring excellent marine-grade corrosion resistance, high strength, wide hose barb size and thread options, secure hose barb design, mirror polished finish, easy installation and maintenance, comprehensive testing and full quality certification in medium-to-high production volumes, the SS316 stainless steel thru hull barb provides the optimal combination of corrosion resistance, strength, aesthetic appeal, durability and cost-effectiveness for marine applications.

 

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