PT. TRI SINAR PURNAMA · Est. 1983 · Semarang, Indonesia
Malleable Iron Pipe Fittings, Engineered Since 1983
Four decades of foundry expertise — supplying certified malleable & galvanized iron pipe fittings to contractors, distributors and partners in more than 18 countries.
What is PT Tri Sinar Purnama?
PT Tri Sinar Purnama is an Indonesian manufacturer of malleable iron pipe fittings, established in 1983. It is a manufacturer rather than a distributor: fittings are produced at the company’s own integrated malleable iron foundry in Semarang, Central Java, where moulding, melting and casting, annealing, hot-dip galvanizing, tapping and machining are all performed in house.
Fittings are supplied in black and hot-dip galvanized finish, from ¼″ to 6″, across the ANSI/ASME, EN, BS and JIS standard families. Other casting products and special-order casting are produced on the same foundry route.
Source note: TSP reports an 80% domestic market share in its current company profile. This is a first-party figure and is not independently audited.
Company history and milestones · Foundry and production route · Product range · Quality control · Certifications
Our Products
Both from TSP & G-Brand
Malleable Iron Pipe Fittings
Galvanized and black fittings with 4 thread standards. 93+ products including elbows, tees, unions, nipples, sockets, reducers, plugs, bushings, crosses, and flanges. SNI 0139 & FM Approved.
Carbon Steel Buttwelded Fittings
Carbon steel butt weld fittings — elbows, tees, reducers, caps and stub ends for industrial pipelines. Applicable standard and specification supplied on request.
Other Malleable Casting
Malleable iron casting products — from gas fittings to pipe hangers and bespoke components. Special-order casting is quoted against customer specifications; confirm scope with TSP.
Built on legacy.
Proven by quality.
PT Tri Sinar Purnama has manufactured malleable iron pipe fittings in Indonesia since 1983, supplying infrastructure and building projects domestically and in more than 18 export countries across Asia, the Middle East and Europe.
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Certified for domestic and export markets
SNI 0139, ISO 9001:2015, FM Approvals (EN/JIS/ASME), TKDN, UL Listed and DVGW. Certification scope varies by product, standard family and market — confirm applicability for your specification.
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Full vertical integration
In-house pattern and core making, moulding, melting and casting, annealing, shot blasting, hot-dip galvanizing, tapping and machining across two production sites — no outsourced production stages.
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Ready stock from local production
Annual capacity of 15,600 tons with stock held locally, so orders are supplied from Indonesian production rather than imported.
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Made in Indonesia — TKDN
TKDN-certified for P3DN local-content requirements on Indonesian government projects, manufactured at TSP's own foundry in Semarang.
Our Commitment to Quality
Every TSP product is backed by certifications recognised across domestic and international markets — from SNI 0139 and TKDN to FM Approvals, UL Listing, DVGW, UPC, ISO 9001:2015 and ethical-trade SMETA audits.
Source Malleable Iron Fittings With Confidence
Discuss your specifications, volumes and certifications with our team. We supply contractors, distributors and partners with dependable quality and lead times.
Contact Us →Small Component,
Huge Projects
TSP is proud to be part of major projects around the world and across Indonesia — our fittings are built into landmarks like Marina Bay Sands and Changi in Singapore, KLCC Petronas Towers and Penang Times Square in Malaysia, plus Conrad Bali, Paragon Mall Semarang, and City of Tomorrow Surabaya.
Exporting to more than 18 countries.
TSP malleable iron pipe fittings are trusted by engineering firms and contractors across Asia, Europe, the Middle East, and the Americas. The reliable Made-in-Indonesia alternative.
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