Authorized Agent · HUHANG TECHNOLOGY GROUP CO., LTD Sun–Thu · 08:00–17:00 · +966 00 000 0000
Onixasa Valves · Fittings · Fire Protection
Authorized agent of HUHANG Technology Group

Flow control for water, fire & industry

Onixasa supplies HUHANG gate, butterfly, check and control valves, fire protection valves and pipe fittings, from DN50 to DN2400, to contractors, consultants and utilities in the region. Factory-direct supply with local technical support.

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HUHANG gate valve, butterfly valve, air valve and pressure reducing valve
Size range
DN50–2400
Rating
PN10–PN40
Class
150–2500
2001HUHANG founded, Shanghai
1,000+Valve and fitting models
80+Countries and regions supplied
4Production bases in China
Featured products

Valves for every line

Resilient seated gate valve
Gate valves
Double flanged butterfly valve
Butterfly valves
Swing check valve
Non-return valves
Pressure reducing valve
Control valves
Where our valves work

Application sectors

Municipal

Water supply & distribution

Resilient seated gate valves, butterfly valves, air valves and hydraulic control valves for networks and pump stations.

Municipal

Drainage & wastewater

Check valves, knife gate valves and strainers for sewage lifting stations and treatment plants.

Buildings

Fire protection

UL-listed grooved butterfly valves, OS&Y gate valves, alarm check valves, hydrants and grooved couplings.

Buildings

HVAC & plumbing

Balancing, motorized zone and brass valves for chilled water, heating and domestic water systems.

Industry

Oil, gas & petrochemical

Cast steel gate, globe, check and ball valves in carbon, stainless and alloy steel.

Infrastructure

Power & water conveyance

Large-bore valves for long-distance transmission lines, power stations and irrigation schemes.

Why Onixasa

Factory-direct, locally supported

Manufacturer authorization

We are HUHANG's appointed agent, so every valve comes with genuine mill certificates, test reports and factory warranty.

Submittals ready for consultants

Datasheets, drawings, certificates and compliance statements prepared for material approval requests.

Tested before shipment

HUHANG's CNAS-accredited lab and hydraulic test centres run shell and seat tests on production valves.

Site and after-sales support

Installation guidance, commissioning assistance and spare parts handled by our local team.

Send us your valve schedule

Share your BOQ or valve list and we will return a priced, compliant offer.

Request a quotation
About us

Onixasa & HUHANG

A trading agency built around one manufacturer's full valve range, so clients deal with a single accountable partner from submittal to handover.

Who we are

Onixasa is a trading agency specializing in water valves, fire protection valves and pipe fittings. As the authorized agent of HUHANG Technology Group Co., Ltd, we bring the manufacturer's range to contractors, MEP consultants, utilities and industrial clients.

Our team handles technical selection, material submittals, pricing, logistics and after-sales service, and keeps a direct line to HUHANG's engineering and quality departments.

Our manufacturer

HUHANG was established in Shanghai in 2001 and has grown into a group covering foundry work, iron, brass and steel valves, pipe fittings and firefighting equipment. It runs production bases in Shanghai, Fujian, Shandong and Zhejiang, a national-level CNAS laboratory, and static and dynamic hydraulic test centres.

HUHANG cooperates with Lanzhou University of Technology and Fuzhou University on valve R&D and has taken part in drafting Chinese national and industry standards.

Company profile

Agency
Onixasa
Principal
HUHANG Technology Group Co., Ltd
Manufacturer HQ
Jinshan District, Shanghai, China
Founded
2001 (manufacturer) · [year] (Onixasa)
Product range
Valves, fire protection, pipe fittings, flanges
Size range
DN50 – DN2400 (2″ – 96″)
Pressure
PN10 – PN40 · Class 150 – 2500
Materials
Ductile iron, WCB/WCC, CF8/CF8M, brass, alloy steels, Monel, Inconel
Markets
80+ countries and regions

Mission

Supply dependable, certified flow control products that keep water, fire and process systems running.

Quality

Every shipment traceable to heat numbers, test certificates and factory inspection records.

Partnership

Long-term relationships with contractors and consultants, built on on-time delivery and honest technical advice.

Products

Product range

Filter by system. Every product is available with datasheet, drawing and test certificate on request.

Ranges shown are typical. Final sizes, ratings and standards are confirmed on the datasheet for each order.

Certificates

Certified quality

HUHANG's management systems and products are certified by independent bodies. Copies are supplied with every submittal.

ISO
9001

Quality management

Design, manufacture and sale of valves and pipe fittings.

Management system
ISO
14001

Environmental management

Controls on foundry emissions, coatings and waste.

Management system
ISO
45001

Occupational health & safety

Safe working practice across all production bases.

Management system
CNAS

Accredited laboratory

National-level lab for material and hydraulic performance testing.

Laboratory
UL

UL listing

Fire protection valves for sprinkler and standpipe systems.

Product
CE

CE marking

Conformity for pressure equipment supplied to European markets.

Product
TÜV

TÜV certification

Third-party product inspection and verification.

Product
API

API monogram

Steel valves for oil, gas and petrochemical service.

Product
Design standards

Standards we supply to

ProductDesignFace to faceFlange drillingTesting
Resilient seated gate valveEN 1171 / AWWA C515EN 558 S14/S15EN 1092-2 PN10/16EN 12266-1
Butterfly valveEN 593 / API 609EN 558 S13/S20EN 1092 / ASME B16.5API 598
Swing / dual-plate checkEN 12334 / API 594EN 558 S48EN 1092-2EN 12266-1
Cast steel gate / globeAPI 600 / BS 1873ASME B16.10ASME B16.5API 598
Grooved fittingsAWWA C606—Grooved endUL 213
Our story

History & projects

Two decades of manufacturing growth behind every valve we supply.

Milestones

  1. 2001Founded

    Shanghai Huhang Valve Co. established

    Production of hydraulic control valves, soft-seal gate valves and butterfly valves begins in Nan'an, Fujian.

  2. Stage 2Expansion

    Steel valves in Jinshan, Shanghai

    Investment in cast steel, stainless steel and special valves. Quanzhou Huhang Valve Manufacturing Co. established in Fujian.

  3. Stage 3Testing

    First dynamic hydraulic test centre in Fujian

    Joins the China Urban Water Supply and Drainage Association; Shanghai Huhang recognized as a high-tech enterprise.

  4. Stage 4Group

    HUHANG Technology Group formed

    Pipe Industry company launched for stainless steel pipes and fittings, completing the pipe-and-valve supply chain.

  5. 2025Export

    Malawi irrigation delivery

    Extended-stem gate valves shipped for the Shire Valley Transformation Program secondary pipelines.

  6. [Year]Onixasa

    Onixasa appointed as agent

    Onixasa becomes HUHANG's authorized agent for the regional market.

Reference projects

DeliveredIrrigationMalawi

Shire Valley Transformation Program

Extended-stem gate valves for the secondary pipeline network, supplied by HUHANG for the Ministry of Agriculture.

Water supply[City]

[Project name]

[Client / main contractor] · [Scope: e.g. DN100–DN600 gate and butterfly valves] · [Year]

Fire protection[City]

[Project name]

[Client / main contractor] · [Scope: e.g. UL-listed grooved butterfly valves, alarm check valves] · [Year]

HVAC[City]

[Project name]

[Client / main contractor] · [Scope: e.g. balancing and motorized valves] · [Year]

Exhibitions

Meet us at trade shows

See HUHANG valves in person and talk to our engineers. Dates below are updated as participation is confirmed.

[Month][Dates] · [Year]

[Exhibition name]

[Venue, city] · Hall [ ] · Stand [ ] · Showcasing waterworks and fire protection valves.

Upcoming
[Month][Dates] · [Year]

[Exhibition name]

[Venue, city] · Hall [ ] · Stand [ ] · HVAC and building services range.

Upcoming
[Month][Dates] · [Year]

[Exhibition name]

[Venue, city] · Industrial and oil & gas valves.

Past
Contact us

Request a quotation

Send your valve schedule or BOQ. We reply with a priced offer, datasheets and delivery time.

Office[Building, Street], [District], [City], Saudi Arabia
Phone+966 00 000 0000
Emailsales@onixasa.com
Working hoursSunday – Thursday, 08:00 – 17:00