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Specialists in Custom-Made Fasteners, Flanges, Pipe Fittings, and Machined Components.
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Custom pipe fittings and service

Yuhuan Hongqian Machinery is a professional manufacturer specializing in custom pipe fittings and precision CNC components, we could based on your drawings to build your own products with over 10 years of experience delivering high-quality, tailored, and cost-effective solutions. 

With a robust facility equipped with 60 advanced CNC machines, we work with a wide range of materials, including Stainless Steel , Carbon Steel, Brass, and Aluminum, ensuring cost-effective production for any application. we prioritize competitive pricing while maintaining strict ISO 9001:2015 quality standards. Our process includes rigorous product testing—including salt spray testing—and continuous technical training for our team to ensure unparalleled precision and surface finish. Whether you need standard parts or complex custom designs, we provide reliable manufacturing at scale.

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Custom carbon steel pipe fittings

Custom ss pipe fittings

Fastener

More introdution for what We Service

Customisation is Our Speciality

Yuhuan Hongqian Machinery is a premier manufacturer and supplier specializing in high-quality carbon steel pipe fittings and stainless steel pipe fittings. We provide both standard and bespoke products tailored for demanding industries, including oil & gas, petrochemical, and power generation.

We excel in supplying high-integrity components designed to withstand the most extreme environments. Our core expertise lies in the rapid production of customized solutions that precisely meet our clients’ unique technical specifications.

By offering a service that is second to none, we have earned the long-term trust of a global customer base. Strategically located in Zhejiang’s manufacturing hub, we are perfectly positioned to provide efficient logistics and reliable export services to customers worldwide.

Material range of custom precision parts

At Yuhuan Hongqian Machinery, we go beyond simple manufacturing by providing material solutions tailored to the specific mechanical demands of global industries. Our expertise covers a wide range of applications, ensuring each component delivers peak performance:

  • Hydraulic & Pneumatic Systems: We utilize high-strength carbon steels and alloy steels to manufacture connectors that withstand extreme pressure and prevent leakage in fluid power circuits.

  • Automotive & Transportation: Our precision-machined parts for the automotive sector prioritize durability and fatigue resistance, using materials like AISI 1045 and specialized alloy steels.

  • Oil, Gas & Petrochemical: We specialize in stainless steel pipe fittings (SS316/316L) that offer superior corrosion resistance in the most aggressive offshore and refinery environments.

  • Construction & Engineering Machinery: For heavy-duty equipment, we provide components treated with specialized Quenching & Tempering to ensure high hardness and impact toughness under heavy loads.

  • Precision Industrial Fittings: From irrigation to general manufacturing, our carbon steel pipe fittings provide a cost-effective yet reliable solution for diverse fluid handling needs.

By matching precise metallurgy with your specific industry standards, we ensure that every custom component is optimized for its operational environment.

Surface treatment of pipe fittings

To maximize the performance of our carbon steel pipe fittings and non-ferrous components, we provide a comprehensive range of industrial finishing services tailored for every material:

  • Steel & Iron Coating: Includes Blue-White, Yellow, and Cr3+ Zinc Plating, plus high-performance Dacromet and E-coating for superior corrosion resistance.

  • Stainless Steel & Aluminum: Professional Passivation and Anodizing to ensure maximum oxidation resistance and surface hardness.

  • Copper & Brass Finishing: Specialized cleaning and plating services to enhance conductivity and prevent tarnish on copper-based parts.

  • Specialized Plating: Expertise in Electroless Nickel Plating, providing uniform thickness and wear resistance for complex geometries.

  • Precision Processing: From Quenching & Tempering for high HRC hardness to ultrasonic cleaning and high-gloss polishing.

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Our Products

At Hongqian, we specialize in high-precision custom pipe fittings and CNC components that meet the most demanding international standards, including ISO, SAE, and DIN. With over 10 years of manufacturing expertise and a robust facility of 60+ CNC machines, we provide tailored, leak-proof solutions for the Oil & Gas, Automotive, and Hydraulic industries. From complex drawings to scale production, we deliver excellence in every thread.

Energy & Fluid Fittings

High-performance solutions for Oil, Natural Gas, and industrial valves. Our fittings are engineered to ensure zero-leakage reliability in high-pressure and corrosive environments, verified by rigorous spectrometer material analysis.

Custom Automotive Components

Delivering mission-critical parts for automotive fuel, sensor, and braking systems. With over 10 years of CNC expertise, we maintain strict tolerances of ±0.02mm, ensuring durability for Tier 1 supply chain requirements.

High-Pressure Pneumatic Solutions

Specialized in high-strength hydraulic and pneumatic connectors. Every component undergoes 2.5D image measurement (Projector) to guarantee perfect thread precision and structural integrity under extreme industrial pressure.

Versatile Non-Standard Custom Manufacturing

Your partner for diverse industrial challenges. With 60+ CNC machines, we provide 100% custom manufacturing from your drawings, supporting Stainless Steel, Carbon steel, Brass, and Aluminum for any application.

Our Quality Commitment

At Hongqian, quality is the foundation of our manufacturing process. We implement a rigorous inspection system adhering to ISO 9001:2015 standards, ensuring that every custom component meets your exact technical specifications. From raw material verification to final precision testing, we ensure zero-defect reliability for every shipment.

100% Material Verification

 We utilize spectrometer analysis to verify the chemical composition of every batch of Stainless Steel, Brass, and Aluminum, ensuring 100% material integrity and traceability.

High-Precision Inspection

 Equipped with 2.5D Image Measuring Machines (Projectors) and calibrated gauges, we maintain strict dimensional control with tolerances as tight as ±0.02mm.

Salt Spray & Leakage Testing

To ensure long-term performance in harsh environments, we conduct salt spray testing for surface resistance and pressure testing to guarantee leak-proof reliability.

Strict QC Protocols

Our quality control covers the entire lifecycle: from IQC (Incoming), IPQC (In-Process) by our 10-year experienced technicians, to 100% final visual and thread inspection.

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The Leading custom pipe Fittings Supplier to Rocket Your Business

hongqian is a professional manufacturer of custom pipe fittings, steel fittings, and related cnc turning parts, with over 9 years of experience delivering high-quality, customized, and cost-effective hydraulic components. We prioritize competitive pricing while maintaining strict quality standards through rigorous product testing and continuous skill development for our workers, ensuring unparalleled quality and service. Contact us today to request a free sample and learn more about our solutions.

Warehouse

With ample, organized storage space, we ensure a stable raw material inventory (Stainless Steel, Brass, Carbon Steel) for quick production startups. Our streamlined logistics system enables us to handle bulk orders with speed, ensuring on-time dispatch and arrival.

workshop

Our workshop is equipped with 60+ advanced CNC machines and robust machining centers. This robust capacity allow us to handle high-volume production for standard fittings and manage complex, non-standard component fabrication efficiently.

Inspection Room

Equipped with 2.5D image measuring machines (Projectors), salt spray testing facilities, and spectrum analyzers, our quality team ensures strict dimensional control (tolerances to ±0.02mm) and 100% material integrity before shipping

Gantry Robot

 Utilizing automated gantry robot loading/unloading systems, we optimize our manufacturing efficiency for repeated large-scale production. This automation guarantees high consistency and reduces human error for mission-critical parts.

Strict Quality control

Our stringent quality control includes thorough inspections at every stage—checking material surface, hardness, dimensions, and threads using advanced tools like CMM, 3D precision measurement systems, and thread gauges. We conduct detailed sampling during production and final inspections, rejecting any non-conforming batches to ensure precision and reliability.

To safeguard your products, fittings are packaged with protective caps, foam film layers, and custom labels as per your requirements. We also offer additional services such as laser engraving for trademarks, part numbers, and traceability.

IQC

Spectrometer

Hardness test

Laser service

CMM

Salt Spray Test

Warehouse

FQC

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CLients Testimonial

Blog

At yuhuan hongqian , we take pride in delivering exceptional products, competitive pricing, and outstanding service that exceeds expectations. Read what our satisfied clients have to say about their experience with us and why they continue to trust Topa for all their hydraulic needs.

How to Choose Different Types of Hydraulic Fittings Correctly?

FAQ

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