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Win-Viet Precision Machinery Company LtdWelcome to WIN-VIET Precision Machinery Co., Ltd.

Vietnam's Premier Manufacturer of Stainless Steel Pipe Fittings & Valves.

At WIN-VIET, we are committed to becoming a world leader in stainless steel piping equipment manufacturing, leveraging advanced technology and efficient management to deliver excellence.

 

 
  • Stainless Steel Full Couplings
    Stainless Steel Full Couplings – Reliable & Versatile Machined from seamless pipe​ for superior strength. Available in polished, dull, or pickled finishes​ to match your application (industrial, commercial, hygienic). • Custom Lengths...
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  • Stainless Steel Half Couplings
    Stainless Steel Half Couplings – Precision-Machined for Seamless Pipe Connections Machined from high-grade seamless pipe (AISI 304/316)​ for superior strength and a perfect fit. Designed for reliable, leak-proof branch connections in...
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  • Stainless Steel Hexagon Nipples
    Stainless Steel Hexagon Nipples – Secure & Easy-Install Pipe Adapters Machined from certified AISI 316 stainless steel, these hex nipples provide a corrosion-resistant, high-pressure (150LB) connection for industrial piping. The...
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  • Stainless Steel Hex Hose Nipples
    Stainless Steel Hex Hose Nipples – Secure Connection for Industrial Hoses Certified ASTM 351 material, 150LB pressure rated. 304 stainless steel barb ensures tight hose grip, with male threads for secure fittings. Ideal for industrial...
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  • Stainless Steel Reduced Hexagon Nipples
    Stainless Steel Reduced Hexagon Nipples , Pressure 150LB 304ss Reduced Hexagon Nipples,
    SIZE: 6NB*8NB-100NB*80NB Reduced Hexagon Nipples ;
    There are two male threads in the Reduced Hexagon Nipples, one end reduced to the other...
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  • Stainless Steel Pipe 45 Degree Elbows
    Stainless Steel 45° Elbows – Precision 45° Angled Connectors Certified ASTM 351 304 stainless steel, 150LB pressure rated. Two female threads ensure a secure, leak-proof 45° angled connection for efficient directional changes in piping...
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  • Stainless Steel Pipe 45 Degree Street Elbows
    Stainless Steel Pipe 45 Degree Street Elbows ,
    Pressure 150LB 304ss 45°Street Elbow,
    SIZE:6NB-100NB
    45DEG F/M BSP ELBOW 316/304 ;
    There is one female threads and one male thread .
    The product name for...
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  • Stainless Steel Pipe 90 Degree Elbows
    Stainless Steel 90° Elbows – Precision Right-Angle Pipe Connectors Certified 316 stainless steel 90° elbows with 150LB pressure rating. Dual female threads ensure secure, leak-proof connections for piping directional changes. Available...
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  • Stainless Steel Pipe 90 Degree Street Elbows
    Stainless Steel 90° Street Elbow A durable 90-degree pipe connection solution, designed for chemical, water treatment, and industrial piping systems. Features one female thread and one male thread for flexible and secure...
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  • Stainless Steel Pipe 90 Degree Reduced Elbows
    Stainless Steel Pipe 90 Degree Reduced Elbows ,
    Pressure 150LB 304ss 90 Reducing Elbow,
    SIZE:6NB*8NB-100NB*80NB 90DEG F/F BSP Reduced ELBOW 316 ;
    There are two female threads in the 90 degree elbow .The OD of one end...
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  • Stainless Steel Female Tees
    This stainless steel female tee is crafted from premium 304/316-grade material, delivering exceptional resistance to corrosion and high-pressure environments. Rated for 150lbs systems, it ensures zero-leak performance and long-term...
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  • Stainless Steel Y Type Tees
    This Stainless Steel Y-Type Tee withstands harsh conditions with a 150lbs rating and premium corrosion resistance. Precision-machined for leak-proof performance, its Y-shape optimizes flow distribution while reducing pressure drop....
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Company Profile & Vision
 

WIN-VIET Precision Machinery Co., Ltd. was established on July 1, 2018, and is strategically located in Dong Thap Province, Vietnam. Our expansive facility covers a land area of 21,840㎡ and a construction area of 23,837㎡ to support our dual focus on Investment Casting and Machining.

Corporate Vision

To be the world leader in the field of stainless steel piping equipment manufacturing.

Mission

To develop the precision casting business and serve the stainless steel pipeline industry.

Core Values

Integrity, pragmatic, persistence, innovation.

Industry Recognition

We were honored to be awarded Vietnam's "Top Foreign Investor" in both 2023 and 2024.

Why Choose WIN-VIET? Our Unique Advantages

Our fundamental strengths are engineered to safeguard your supply chain integrity and ensure long-term value:

Robust Quality Control Systems

Our manufacturing excellence framework and commitment to quality ensure high standards for every product.

01

Smart Production Management

We utilize ERP big data management to achieve a paperless intelligent control process, providing 100% verifiable quality traceability.

02

Innovation-Driven R&D

We fuel continuous improvement with 6% of our revenue going directly to R&D, which annually supports the release of over 100 new precision components.

03

Zero-Defect Commitment

We stand by a 10-year quality commitment, delivering qualified product reliability.

04

Global Service & Connectivity

Our experienced team provides an international vision, ensuring compliance and a 24-hour agile response. Our factory is conveniently located only a 1.5-hour drive from Ho Chi Minh Airport.

05

 

Commitment to Quality: Control and Product Standard

 

Quality is the lifeblood of our enterprise, governed by the quality policy:

"Product quality is a matter of survival, A miss is as good as a mile, Customer satisfaction is paramount; Preserve to perfection".

 

Comprehensive Quality Assurance System

Our quality control is integrated throughout the entire production life cycle:

1.Incoming Raw Material Inspection (Appearance, dimensions, and material)
Attached Steel pipe test pic


2.Mold Inspection
Attached mold check pic


3.Wax First Piece Inspection
Attached wax check by operator pic


4.Wax Part Self-Inspection
Attached wax part check by the wax director pic

 

5.Full Wax Part Inspection (100% appearance check before casting)
Attached wax qualified tester by Wax Inspector pic

9.Casting Secondary Inspection (After Pickling) (Appearance, dimensions, and material)
Attached related process pic


6.Group Tree First Piece Inspection
Attached group tree qualified tester by Inspector pic


7.Sand shell liquid test
Attached sand shell tested by Inspector pic


8.Spectrometer Material Check (Chemical composition analysis)
Attached Spectrometer pic

10.Mechanical Property Testing (Tensile, hardness, impact, and metallographic tests)
Attached related advanced equipment pic


11.Machining First Piece Inspection(Appearance, dimensions, threads, material)
Attached related testing pic


12.Machining Self-Inspection(Appearance, dimensions, threads)
Attached machining testing pic

13.Air & Water Pressure Testing (Hydraulic and pneumatic testing)
Attached related pic


14.Coordinate Measurement Inspection (CMM) (Precise size, shape, and position check)
Attached related pic


15.Final Product (Final dimensions, threads, and quantity)
Attached related pic

 

16.Packaging Inspection (Quantity and method of packaging)
Attached related pic

To maintain precision, all critical production and inspection equipment are subject to annual external calibration by accredited local Vietnamese authorities to ensure measurement accuracy and compliance with ISO9001 standards.

 

Global Certifications & Product Standards

 

 

Our adherence to global product standards is verified by a range of prestigious certifications:

 

Certification/Standard

Scope/Product

Certifying Body

ISO9001

Investment Castings and Machining

Lloyd’s Register

PED 2014/68/EU

Design and Manufacture of Valves and Fittings

Lloyd’s Register

AD2000 W0

Metal Material for Pressure Equipment

Lloyd’s Register

CRN

150# S.S. Pipe Fittings & SS/CS Nipple

Canada CSA Group

NSF/ANSI 61

Stainless Steel Fittings (Drinking Water System Components)

NSF International

BSCI

Social Audit Manufacturing

Amfori

Win-Viet BSCI Certificate
Win-Viet CRN Certificate (Alberta)
Win-Viet CRN Certificate (British Columbia)
Win-Viet CRN Certificate (Manitoba)
Win-Viet CRN Certificate (Ontario)
Win-Viet CRN Certificate (Quebec)
Win-Viet ISO 90012015 Certificate
Win-Viet JIS Certificate 2
Win-Viet JIS Certificate 3
Win-Viet JIS Certificate
Win-Viet LRQA AD2000
Win-Viet LRQA ANNEX I
Win-Viet LRQA PED 2014-68-EU
Win-Viet LRQA PED 2014-68-EU 2
Win-Viet LRQA PED 2014-68-EU 3
Win-Viet LRQA PEDM 2014-68-EU 3
Win-Viet NSF Certificate
Win-Viet NSF Certificate 2
Win-Viet NSF Certificate 3
Win-Viet Vietnamese Government
How Our High-Quality Products Are Made

Our core capability lies in high-precision Investment Casting and Machining, allowing us to produce high-quality Stainless Steel Pipe Fittings and Valves.

Our annual production capacity is 2,160 tons for casting and 2,880 tons for machining.

Advanced Production Process

 
 

Casting: The process follows a strict sequence

Wax production (mould making/injection) → Sand shell making → Steel making (melting and pouring, material testing) → Sand shell cleaning → Surface treatment → Inspection → Casting warehouse.

 
 
 

Pipe cutting and Machining

The casting and pipe products proceed to machining, which involves: CNC Machining (using over 100+ CNC lathes,Machinery robots, and Machining centers) → Cleaning → Assembling(valves and unions) → Inspection (leak, thread, surface checks) → Print → Package → Shipment.

 
 
 

Packaging

Packaging is the final controlled step in our production process. A dedicated Packaging Inspection is performed to verify the quantity and method of packaging, ensuring products are securely prepared for shipment.We could prove the diversified packaging options based on your requirement!

 

 

Global Market Presence

 

 

WIN-VIET operates with an international vision, serving customers across major global markets32.

Based on 2024 annual data, our key export markets are:

Market

Main Product(s)

Market Share (2024)

North America

150lbs S/S and C/S Pipe Fittings & S/S Valves

45%

Asia (Japan & Taiwan)

OEM product & S/S Valves

40%

Europe

150lbs S/S Pipe Fitting & S/S Valves

15%

Total Sales Volume

 

1,500 Tons

We accept various delivery terms (FOB, CIF, EXW, CFR) and payment types (L/C, T/T, Credit Card, Cash, West union).

 

Come To Join Us

We welcome you to visit our state-of-the-art facility!

Our factory is conveniently located in Dong Thap Province, Vietnam, with the nearest port being Ho Chi Minh. We are only a 1.5-hour drive from Ho Chi Minh Airport.

Choosing WIN-VIET is bound to WIN-WIN!

 

FAQ

 

 

Q1: How can I place an order?

A: You can contact us online or sending us an inquiry by email ok@czfittings.cn or by phone+84-932932138(zalo). Please provide the details of your requirements as clear as possible. So we can send you the offer at the first time.

Q2: When can I get the price?

A: Usually we quote within 24 hours after we get your inquiry.

Q3: Can you do OEM for us?

A: Yes. We have a professional team with +20 years experience in stainless steel precision investment casting and machining. We can provide customized precision cast metal products for you. Our OEM products include automobile parts,housing/pump body parts,impeller,directional tactile strips,7-way valve,etc.

Q4: What is your lead time?

A: In-stock items: If the products are available in our inventory, we can ship within 7-10 business days after confirming your order.
Custom orders (non-stock items): For products requiring production, the lead time is typically 60-90 days, depending on the complexity and order volume.
if you need urgent assistance or have specific requirements, please let us know, and we will prioritize your request accordingly.

Q5: Are you a manufacturer or trading company?

A: We are a manufacturer, and we have builded up our company since 2018 in Long Giang Industrial Park,Tan Phuoc 3 Commune,Dong Thap Province,Vietnam.

Q6: Where is your factory located?

A: Our factory address is Lot 131B3-131C2 Long Giang Industrial Park,Tan Phuoc 3 Commune,Dong Thap Province,Vietnam.

Q7: How can I get to your factory?

A: Our factory is near HO CHI MINH Airport, we can pick you up in the airport.Please feel free to contact us +84-932-932-138.

Q8: What is your minimum order quantity, can you send me samples?

A: Our minimum quantity based on the products type, as our product have a lot of dimensions, so if u send us email we could provide MOQ matched with corresponding products. Pls feel free to send the email ok@czfittings.cn.

Q9: Do you have the products in stock?

A: Some of our regular stainless steel pipe fittings has stock.You can contact us to make sure.

Q10: How many square meters of your factory?

A: Nearly 22000 square meters of our land and a construction area of 23,837㎡ to support our dual focus on Investment Casting and Machining.

Q11: Do you have a showroom?

A: Yes, Our main stainless steel products are set up in the showroom such as stainless steel threaded fittings, ball valves(1pc,2pc,3pc), check valves,Y-strainers,unions,flanges,quick couplings and other customized products.

Q12: Is there the products tested before shipping?

A: Our products undergo +15 strict factory internal testing and are accompanied by reports which would send to our customers to guarantee our products.So choosing WIN-VIET is bound to WIN-WIN! We are committed to be your long term trusted supplier.

Q13: Would you have a discount?

A: Yes we could offer different discount according to your order quantity. We also hold regular promotional activities every year.

Q14: Which payment form you can accept?

A: We accept various delivery terms (FOB, CIF, EXW, CFR) and payment types (L/C, T/T, Credit Card, Cash, West union)

Q15: What's your after-sale service?

A: We are always be your back so if u have any unsatisfactory just feel free to contact with us.Based on ISO-certified processes, we promise for any complaint we must use the root-cause analysis via 8D methodology for defects and give our valuable customers for rooted solutions because our product quality policy is customers are paramount. For urgent cases, contact our 24/7 team at [ok@czfittings.cn./+84-932932138].

Q16: What type of your stainless steel threaded fittings?

A: We can support ISO4144 SP114 Eco type threaded fittings. Our products include unions, elbows, couplings, hose nipples,tees etc.

Q17: Have your products been exported?/What is your main market?

A:Yes.With our global manufacturing footprint, we supply and support customers worldwide—across the America, Europe, Asia, and beyond. Our offerings are manufactured in compliance with international standards including ANSI, DIN, EN, and JIS, ensuring optimized performance across diverse operating conditions. Ensuring optimal performance for any application.

Q18: What is your main application area?

A: We provide specialized products and solutions for handling water, oil, gas, and other critical fluids, serving industries such as oil & gas, food & beverage, pharmaceuticals, and automotive manufacturing and maintenance.

Q19: What about the transportation?

A: Usually we will use the ocean freight for mass products but we could also provide the air freight based on your requirement.

Q20: What services do you offer?

A: We offer a complete and comprehensive solution centered around stainless steel investment casting products and machining products. Our full-service workflow includes:
(1)Mold Design and Mold Development based on customer-provided specifications.
(2)Sample Prototyping and Batch Production.
(3)Shipping, Delivery, and provision of all necessary Documentation.

Q21: Can we get samples for free?

A: Yes! We welcome inquiries regarding free samples. Please feel free to contact us to discuss your specific needs. [Email:ok@czfittings.cn. /TEL:+84-932932138].

Q22:What are your main production and manufacturing capabilities?

A: We utilize the Lost Wax Investment Casting Process and advanced Machining Process. Our Vietnam facilities also operate more than 250 units of equipment, including injection machines, dewaxing kettles,automatic shell drying lines, furnaces, shot-blasting machine, CNC machines, machining centers, 6-axis industrial robots, valve assembly line and various other advanced processing machines.Our detailed equipment list includes:

Equipment Category

Equipment Name

Quantity

Condition

Casting- inject the wax into the mold

Injection machine

12

Acceptable

Casting- make the sandshell molds

Sand Mixer for Mold Making

18

Acceptable

Casting- drying the sand shell molds

Shell drying line

10

Acceptable

Casting- dewaxing

Dewaxing kettle

2

Acceptable

Casting- melting the stainless steel scrap

Intermediate frequency machine

3

Acceptable

Casting- heating the sand shell molds

Calcinator

6

Acceptable

Casting- cleaning the surface of metal

Shot-blasting machine

18

Acceptable

Casting- removing contaminants from metal surfaces

Cutter + Grinder + Shaping machine + Vibrating shell machine

6 + 9 + 3 + 3

Acceptable

Machining

CNC lathe

93

Acceptable

Machining

Machining centre

6

Acceptable

Machining

Machinery robot

5

Acceptable

Machining

Tapping machine + Sleeving machine

16 + 5

Acceptable

Machining

Drilling and milling machines

4

Acceptable

Cutting pipe

Sawing machine

10

Acceptable

Cutting pipe

Pipe cutting machine

6

Acceptable

Cleaning the surface of metal

Automatic clean line

4

Acceptable

Drying

Oven

5

Acceptable

Assembly

Valve assemble line

1

Acceptable

Q23:What quality inspection equipment do you use?

A: We are committed to delivering exceptional quality, utilizing precise testing equipment to ensure product integrity:

Equipment Category

Brand & Model No.

Quantity

Condition

Material Analysis

Spectrum analyzer

Yantai Dongfang & KDCK-25

1

Material Analysis

Metallographic tester

4XC-W; MP-2

1

Mechanical Testing

Tensile strength tester

WDW-200G

1

Mechanical Testing

Brinell hardness tester

HBS-3000B

1

Mechanical Testing

Rockwell hardness tester

HR-150A

1

Mechanical Testing

Impact testing machine

JB-300B ; UY-2Y; DWC-802.5KW

1

Mechanical Testing

Impact sample notch projector

CTS-50

1

Mechanical Testing

Impact test low temperature tank

DWC-80

1

Dimensional / Functional

Coordinate measuring machine (CMM)

CROMA CLASSIC 564

1

Leak testing

Valve leak test machine

FLD-4DSY

5

Q24:What is the composition of your workforce?

A: We maintain a highly localized and stable workforce. Approximately 99% of our employees are local Vietnamese talent, which ensures cultural cohesion and operational stability.

Q25:What certificates and qualifications do u hold?

A: Our manufacturing facilities are certified to multiple international standards:

● Quality Management: ISO 9001, API Q1(in pending).

● Environmental, Safety & Social Responsibility: BSCI Audit.

● Industry-specific Certifications: PED, PED Module (PEDM), PER, AD 2000, CRN,NSF61.

● Product Design Approvals: ISO 4144, SP 114, EN 10241, API 6D(in pending).

● Honors & Awards: Vietnam's "Top Foreign Investor" in both 2023 and 2024.

Certification

Certified By

Certificate No.

Product Name&Model No.

Expiry Date

ISO9001

Lloyd’s Register

ISO9001-0072410

Manufacture of stainless steel investment castings and associated machining

16/Jul/2025-15/Jul/2028

PED2014/68/EU

Lloyd’s Register

0343/PED/SHA/BJG00002714/A

Design and manufacture of ball valves/ Check valves/ Y-strainers

26/Mar/2025-25/Mar/2028

PED2014/68/EU

Lloyd’s Register

0343/PEDM/BJG00002714/A

Manufacture of Stainless steel valve parts and Steel pipe fittings

26/Mar/2025-25/Mar/2028

AD2000 W0

Lloyd’s Register

BJG00002714-W0-1

AD2000 Merkblatt: W 0

Type of Material: Carbon steel/ stainless steel

Product description: Metal Material for Pressure Equipment

26/Mar/2025-25/Mar/2028

SAS322

Japan Stainless Steel Association certificate

32206:20

32221:20

32229:23

13-60SU 1 MPa ~2 MPa

75-100SU 2 MPa

13-60SU 2 MPa ,1 MPa

26/Oct/2020-25/Oct/2025

11/Jun/2020-10/Jun/2025

24/May/2023-23/May/2028

CRN

Canada CSA Group

0A24945.5 ;

0A24945.50;

0A24945.51...

150# S.S. Pipe Fittings & SS/CS Nipple

08/Dec/2033

NSF/ANSI 061

NSF International

 

Stainless Steel Fittings

Passed : June 17, 2025

BSCI

amfori Social Audit Manufacturing

25-0321959​

Manufacture of stainless steel investment castings and associated machining

25/May/2025-25/May/2026

API 6D

API

   

(Applying)

Q26:Do You charge the mold fee?

A: Mold fees are generally not charged for our standard products. However, a mold fee is applicable for customized product series.

Q27:What documents will u provide for us ?

A: We can provide you with the following documents:

Commercial Invoice 3 original +3 copy

Packing List 3 original +3 copy

Original Bill of Lading (B/L)

Mill Test Certificate 1 original

Proforma Invoice 1 original

Certificate of Origin (C/O) 1 original

These documents are essential for customs clearance and the smooth transit of your shipment . Please let us know if you have any specific requirements.

Q28:What package will u provide for us ?

A: We understand that appropriate packaging is critical for cargo safety, especially for international shipping. Our core principle is Flexible Customization meets Secure Reliability, ensuring the safest and most compliant solution for your products.

1. Primary Packaging Methods

We offer a range of solutions tailored to product characteristics and specific transportation needs:

A. Corrugated Cardboard Packaging

This is our most commonly used and versatile option.

Standard & Customized Boxes: We offer various sizes of standard corrugated cartons, with the flexibility to fully customize dimensions and weight capacity to fit your products perfectly.

B. Palletized Packaging (Recommended for LTL/FTL and Ocean Freight)

International Compliance: We use Wooden Pallets and Fumigation-Free Plywood Pallets that fully comply with international shipping standards (such as ISPM 15), effectively preventing cross-border quarantine issues at destination ports.

Security & Stability: Cargo is stacked according to scientific principles (heaviest items on the bottom) and secured using Stretch Wrap for superior stability during transit.

C. Customized Wooden Box (For Specialized Cargo)

Essential for large machinery, complicated style goods requiring maximum protection.

Types of Crates: We provide custom-built options, including:

Fumigation-free plywood boxes.

Solid wood crates (heat-treated and marked with the IPPC stamp for compliance).

Q29:What types of labels will u provide for us ?

A: We can design and provide labels according to your specific requirements. If you have no special requests, we are also happy to offer our standard label designs.

 

 

As one of the most professional stainless steel pipe fittings 150lbs manufacturers and suppliers in Vietnam, we're featured by quality products and good service. Please rest assured to wholesale stainless steel pipe fittings 150lbs for sale here from our factory. Contact us for free sample.

Stainless Steel Pipe 90 Degree Reduced Elbows, Vietnam Stainless Steel Reduced Hexagon Nipples, Stainless Steel Y Type Tees
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