About PT. Tri Sinar Purnama
Four Decades of Quality and Commitment
Who is PT Tri Sinar Purnama?
PT Tri Sinar Purnama is an Indonesian manufacturer of malleable iron pipe fittings, established in 1983 and based in Semarang, Central Java. It manufactures rather than resells: moulding, melting and casting, annealing, hot-dip galvanizing, threading and machining are performed at the company’s own integrated malleable iron foundry, across two production sites totalling 60,000 m², with an annual capacity of 15,600 tons and more than 1,900 employees. Fittings are supplied in black and hot-dip galvanized finish; 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, capacity and facility figures on this page are based on PT Tri Sinar Purnama’s approved company profile. See the production route and installed equipment, the quality control checks and the certifications held.
Milestones · History
From a Modest Foundry in 1983 to a Global Supplier
When first established in 1983, PT. Tri Sinar Purnama was a small foundry producing malleable iron pipe fittings with modest machinery and fewer than 100 employees.
Today, after more than four decades, our annual capacity has grown to 15,600 tons across two production sites, supported by more than 1,900 workers — and our fittings reach landmark projects in more than 18 countries worldwide.
Foundry & Casting +
Malleable iron cast in house on jolt squeeze moulding lines and cupola furnaces, with chemical composition checked by spectrometer during melting.
Machining & Threading +
Threading across BSP, NPT, JIS and DIN/EN systems, gauged with plug and ring gauges during production and machined on site.
Hot-Dip Galvanizing +
Batch hot-dip galvanizing performed in house, with coating thickness verified using an Elcometer before packing.
Quality Control & Testing +
In-process inspection with published acceptance criteria at each stage, and a final AQL check before shipment. Certification scope varies by product and market.
Packing & Logistics +
Export packing and shipment preparation for distributors and partners in more than 18 countries.
Vision
To become a world-leading manufacturer and provider of pipe joints and casting products — one that inspires and benefits the environment and all the people involved.
Mission
To continuously improve mutually beneficial relationships with customers, employees, business partners and shareholders, grounded in sincerity.
Through optimal product quality, continuous innovation, skilled human resources, transparent partnerships and a strong commitment to occupational safety and health (SMK3).
Why Partner With TSP
Four decades of foundry expertise, international certification and proven reliability — trusted by contractors and distributors worldwide.
Proven Since 1983
More than 40 years of malleable iron foundry experience and continuous improvement.
Internationally Certified
SNI, FM, UL, DVGW, UPC, ISO 9001:2015, TKDN and SMETA — 11 certifications in total.
Export to 18+ Countries
A global footprint spanning Southeast Asia, Europe, the Middle East and beyond.
15,600 Tons Capacity
Two production sites totalling 60,000 m² with reliable output for large projects.
Landmark References
Marina Bay Sands, KLCC, Changi, IKEA Singapore and Conrad Bali, among many more.
Own Brands TSP & G-Brand
Established, trusted brands with full control of quality from casting to delivery.
Our Journey
Four Decades of Milestones
TSP's first project was the reconstruction of areas around Mt. Galunggung after its eruption — inspiring the name "G-Brand" (Galunggung Brand).
First exports to Singapore and Malaysia under the TSP Brand.
Launched OEM products for P-Brand (Germany) and NKT Brand (Japan).
TSP decided to focus on its own brands — TSP and G-Brand — and discontinued OEM.
Established a subsidiary producing steel pipe nipples.
Established a subsidiary producing ductile iron products.
TSP fittings now reach more than 18 countries, with 80% domestic market share.
Partner With a Manufacturer You Can Trust
From standard fittings to OEM supply, our team is ready to support your project, distribution or export needs.
Get in Touch →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.
From Semarang to the world — 18+ countries.
Four decades of malleable iron pipe fittings, engineered in Central Java and trusted on major projects across Asia, the Middle East, Europe, the Americas, and Australia.
Exporting to more than 18 countries worldwide.
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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