SYI Group
About
SYI Group (Shanxi Yuansheng Casting & Forging Industrial Co., Ltd.) is a diversified Chinese manufacturing conglomerate operating since 1988 from over 500,000 square meters of production and warehousing facilities in Shanxi province. The group comprises five divisions—SYI Foundry, SYI Pipeline Corporation, SYI Forging Factory, SYI OEM Division, and SYI Aluminum Division—collectively producing over 1,000 product SKUs. SYI Pipeline Corporation supplies ductile iron pipes and fittings in classes K7 through K12 per ISO 2531, EN 545, and EN 598, along with universal couplings, flanged adaptors, quick adaptors, dismantling joints, repair clamps, valves, and fire hydrants. SYI Foundry manufactures an extensive municipal castings range including manhole covers, gully gratings, surface boxes, meter boxes, manhole steps, tree gratings, bollards, garden benches, cast lamp posts, water shoes, roof drains, and vent caps per EN 124 and related standards, alongside OEM investment, precision, and lost-wax castings. SYI Forging Factory produces flanges, forged rings, forged fittings, wind turbine forgings, shafts, and lifting anchors using free and die forging processes. The aluminum division offers sand, permanent mould, and die castings plus extrusions. The group holds ISO 9001, TÜV, BSI Kitemark, SGS, UL, FM, NF, and CE certifications and provides OEM and ODM capabilities from design through production, serving municipal drainage, construction, plumbing, agriculture, mining, oil, and gas markets globally.
Key Products
Cast iron pressure pipes for water distribution and wastewater force mains in various thickness classes.
Cast iron fittings including bends, tees, reducers, and branches for DI pipeline connections.
Flexible mechanical couplings for joining pipes of different materials and diameters in water networks.
Transition connectors for joining plain-end pipes to flanged fittings or valves.
Rapid-connect fittings for fast pipeline assembly and repair without specialized tools.
Adjustable connectors that allow easy removal of valves and fittings from pipelines for maintenance.
Emergency repair fittings that seal leaks and breaks on existing pipelines without requiring pipe removal.
Shut-off and control valves for water and wastewater pipeline systems.
Outdoor water supply fixtures for firefighting connected to municipal distribution networks.
Cast iron access covers and drainage gratings for underground utility infrastructure per EN124.
Protective enclosures at grade level for access to valves, meters, and fittings in buried pipeline networks.
Cast iron safety rungs embedded in manhole walls for safe entry into underground chambers.
Decorative cast iron grates around urban tree plantings that allow water infiltration while protecting soil.
Cast iron street furniture for traffic management and public seating in municipal spaces.
Decorative and functional cast iron light poles and mounting bases for urban street lighting.
Custom investment, precision, lost-wax, resin sand, and lost foam castings produced to customer specifications.
Forged steel flanges and fittings for bolted pipeline connections per ASME, EN, and DIN standards.
Carbon and alloy steel pipes and fittings for industrial process, oil, gas, and mechanical applications.
Custom forged components for wind energy generation equipment.
Aluminum components produced via various casting methods for industrial and commercial applications.
Cast iron plumbing fixtures for building drainage, roof water collection, and vent pipe protection.
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