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bulkhead fitting

bulkhead fitting

Item no Outer thread size (B) Inner pipe size LENGTH INCH (L） HEX INCH （C）
3/4 bulkhead fitting 3/4-16UNF 1/4-18NPT 35.6mm 31.75mm
3/4 bulkhead fitting 3/4-16UNF 1/4-18NPT 24.13mm 25.4mm
3/4 bulkhead fitting 3/4-16UNF 1/4-18NPT 38.1mm 25.4mm
1/2 bulkhead fitting​ 1-1/8-12UNF 1/2-14NPT 38.1mm 31.75mm
1-14 bulkhead fitting 1-14UNF 3/8-18NPT 35.6 mm 31.75mm
1-1/8 bulkhead fitting 1-1/8-12UNF 1/2-14NPT+3/8+18NPT 38.1 mm 31.75mm

 

3/8 bulkhead fitting – bulkhead fittings factory

Product Name: 3/8 bulkhead fitting
Material: Carbon Steel
Surface Treatment: Zinc Plating
Size Range: 3/4″ to 1-1/8″
Applications: Truck

Product Overview

Our 3/8 bulkhead fitting are precision-engineered panel mount fittings designed for secure and leak-free connections in various industrial applications. Whether you are working with hydraulic systems, pneumatic pipelines, or machinery enclosures, these fittings provide reliable performance and long-lasting durability.

Key Features

  1. Easy Installation: Designed for panel or enclosure mounting, allowing quick and stable assembly.

  2. Durable & Corrosion-Resistant: High-quality materials ensure excellent performance in high-pressure and harsh environments.

  3. Multiple Connection Options: Available in threaded, welded, or clamp styles to meet different pipeline requirements.

  4. Leak-Proof Design: Built-in seals and rubber gaskets guarantee a tight and reliable connection.

  5. Customizable: Sizes, materials, and surface treatments can be tailored to specific project needs.

Table of Contents

Common Questions

Most Popular Questions.

 
Here, you’ll find answers to common questions about our products/services. If you can’t find what you’re looking for, feel free to reach out to us directly for further assistance.
Are You A Manufacturer Or A Trading Company ?

We are originial manufacturer provide oem cnc turning service and Located in Zhejiang, China, our facility is equipped with advanced CNC turning machines and precision inspection equipment to control both quality and cost from the source. .

We work with a wide range of metal materials to meet various industrial standards. Our major materials include carbon steel , stainless steel , aluminum , brass etc .

To send you an accurate quotation, please provide your 2D/3D technical drawings (in STEP, IGES, PDF, or CAD format) along with your estimated order quantity and material requirements. Usually, our engineering team will evaluate the details and provide a competitive quote within 24 hours.

Yes, we highly recommend prototyping and sample testing before placing bulk orders. We can provide custom pipe fittings samples according to your specifications to verify the dimensions, thread standards (such as NPT, BSP,Metric), and tolerances. Sample lead time is typically 10 working days.

As a custom pipe fittings supplier, our moq is 2000pcs .However, because CNC turning involves machine setup, programming, and tooling costs, larger order quantities will significantly lower the unit price. Please send us your project details, and we will find the most cost-effective production plan for you.

We have extensive experience in machining various international thread standards with perfect precision to ensure leak-free connections. Our production capabilities include:

  • Tapered Pipe Threads: NPT (American National Standard Pipe Thread) and BSPT (British Standard Pipe Taper / PT / R threads), widely used in high-pressure hydraulic systems.

  • Parallel/Straight Pipe Threads: BSPP (British Standard Pipe Parallel / G threads) and Metric parallel threads, ideal for plumbing and water manifold systems.

  • Machine & Bolt Threads: Metric (M) threads, UNC/UNF (Unified Coarse/Fine) threads, and BSW (British Standard Whitworth).

Every single batch of threaded fittings undergoes 99% inspection using professional Go/No-Go thread plug gauges and ring gauges to guarantee consistent pitch, depth, and a perfect seal for your industrial applications.

Yes. For every batch of production, we trace and provide the original raw material test reports (Mill Test Certificates) directly from our steel suppliers. Additionally, we use our in-house spectrometer for PMI (Positive Material Identification) testing before and during production to verify the exact chemical composition. We can supply both the supplier’s material certificates and our spectrometer test data upon request to ensure material compliance.

Yes, we do. Depending on your material and specification requirements, we can perform hardness testing and supply the corresponding reports. We routinely measure and certify hardness using standard scales such as Brinell (HB) or Rockwell (HRC), ensuring the fittings possess the exact structural integrity and machinability required for your application.

Yes. We offer high-precision laser marking services for custom branding, part numbers, size specifications, thread types (such as NPT or BSP), and batch tracking numbers. The laser engraving is crisp, permanent, and highly resistant to corrosion or wear, ensuring clear identification throughout the lifecycle of the fitting.

To prevent oxidation and extend the service life of carbon steel products, we provide several industrial-grade surface treatments, as follow is some normal surface treatment :

  • Zinc Plating (Electro-galvanizing): Available in clear/white, yellow, or black zinc. Provides solid rust protection for standard industrial environments.
  • Black Oxide (Bluing): Adds a sleek black finish with mild corrosion resistance and excellent dimensional stability (adds zero thickness to threads).
  • Anti-Rust Oil / Light Oiling: A temporary protective coating applied immediately after CNC machining to safeguard the parts during transit and storage.it ensures around more than 5 years no rusts.
  • Phosphating (Manganese or Zinc Phosphating): Creates a porous, salt-spray-resistant layer that improves anti-friction properties and serves as an excellent primer for painting.

For stainless steel components, our surface treatments focus on maximizing corrosion resistance and achieving the desired surface roughness (Ra):

Pickling and Passivation: A chemical treatment that removes surface contaminants (like free iron) and restores the chromium oxide passive layer, drastically improving rust resistance.

Electropolishing: An electrochemical process that ultra-smooths the surface, reducing surface roughness (Ra), removing micro-burrs, and creating a high-gloss, pristine finish that prevents bacterial or chemical buildup.

Shot Blasting / Bead Blasting: Uses fine media to create a clean, uniform, non-reflective matte finish while masking minor machining lines.

Mechanical Polishing: Brushed or mirror-polished finishes tailored for architectural, food-grade, or sanitary application requirements.

About us

We specialize in the manufacturing of precision machined custom cnc pipe fittings using a variety of materials including carbon steel, stainless steel, aluminum, and brass.

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Info

  • laurachen375@gmail.com
  • 0576-80769175
  • Phone :0086-18357673956
  • damixi ,longxi ,yuhuan ,zhejiang province .
  • yuhuan hongqian machinery .,ltd