
Welcome 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.
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Stainless Steel Full CouplingsStainless 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...view more
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Stainless Steel Half CouplingsStainless 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...view more
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Stainless Steel Hexagon NipplesStainless 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...view more
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Stainless Steel Hex Hose NipplesStainless 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...view more
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Stainless Steel Reduced Hexagon NipplesStainless Steel Reduced Hexagon Nipples , Pressure 150LB 304ss Reduced Hexagon Nipples,view more
SIZE: 6NB*8NB-100NB*80NB Reduced Hexagon Nipples ;
There are two male threads in the Reduced Hexagon Nipples, one end reduced to the other... -
Stainless Steel Pipe 45 Degree ElbowsStainless 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...view more
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Stainless Steel Pipe 45 Degree Street ElbowsStainless Steel Pipe 45 Degree Street Elbows ,view more
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... -
Stainless Steel Pipe 90 Degree ElbowsStainless 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...view more
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Stainless Steel Pipe 90 Degree Street ElbowsStainless 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...view more
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Stainless Steel Pipe 90 Degree Reduced ElbowsStainless Steel Pipe 90 Degree Reduced Elbows ,view more
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... -
Stainless Steel Female TeesThis 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...view more
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Stainless Steel Y Type TeesThis 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....view more
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 |
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NSF/ANSI 61 |
Stainless Steel Fittings (Drinking Water System Components) |
NSF International |
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BSCI |
Social Audit Manufacturing |
Amfori |




















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