Specification confirmation
Material, dimensions, pressure class and standards checked before supply.
Manufacturer & integrated supplier China · Global supply
Reliable
connections.
Flanges and pipe fittings manufactured by us. Valves and related piping products coordinated through one dependable supply network.
30+Years of manufacturing
08Product categories
OEMFlexible supply support
SITONG / 1993—NOW
We make the parts that hold systems together—and build partnerships the same way.
A China-based manufacturer, wholesaler and distributor serving industrial buyers, wholesalers and projects worldwide.
01 / Product range
Engineered essentials.
One clear source.
Eight focused categories, from our core manufacturing to coordinated supply. Select a product to see the range.
01 / 08
Integrated supply
Other Products
Additional piping components
Integrity · Reliability · Growth
Every connection
should hold.
From valves that control the flow to flanges that hold things together, reliability is built into every detail—products, communication and partnership.
02 / How we supply
Factory strength.
Supply chain reach.
01In-house manufacturing+
Our manufacturing journey began in 1993, focused on stable flanges and pipe fittings for industrial applications.
02Integrated sourcing+
Valves, gauges, gaskets and complementary products are coordinated through an established supplier network.
03Consolidated supply+
We confirm specifications, coordinate inspection, align packaging and combine categories into practical shipments.
03 / Proof, not promises
Quality you
can verify.
Clear specifications, hands-on inspection and documented systems—before your products leave China.
Hands-on inspection
Product details checked during manufacturing and sourcing.
Documented systems
Supporting certificates available according to order requirements.
04 / Our journey
Built over time.
Ready for what’s next.
Decades of manufacturing experience, closer market understanding and a growing international supply network.
- 1993Manufacturing begins
Reliable flanges and pipe fittings made in China.
- 2005Closer to market
Direct sales bring customer needs closer to production.
- 2013Global supply
International customers and private-label partners.
- 2025SITONG steps forward
More direct connections through social media.
05 / Markets we serve
Built in China.
Ready for your market.
Supporting distributors, contractors, retailers and project buyers across Africa, the Middle East and beyond.
- Tanzania
- Zambia
- Nigeria
- Saudi Arabia
- South Africa
- Congo
- Uganda
AFRICA+MIDDLE EAST
Specifications · Packaging · Consolidation · Export coordination
Start a conversation
Send the list.
We’ll handle the connections.
For a faster quotation, include product name, size, material, pressure rating, quantity and destination port.
Talk to SITONG on WhatsApp ↗Phone · +86 134 3265 3457