PT. TRI SINAR PURNAMA memproduksi sambungan pipa besi mampu tempa merk TSP dan G dalam bentuk besi hitam dan galvanis. Tensile & Elongation ISO 5922 (Malleable Cast Iron) DIN EN 1562 (Malleable Cast Iron) ISO 228 - 1 (Pipe Threads where pressure - tight joints are not made on the threads - Part 1 : Dimension, Tolerances and Designation) ANSI / ASME B 1.20.1 ( Pipe threads, General Purpose inch) ASME B 16.3 (Malleable Iron threaded pipe fittings) ASME B 16.39 (Malleable iron threaded pipe unions) ASME B 16.14 (Ferrous pipe plugs, bushings and locknut with pipe threads) Zinc Coating ISO 1446 (Hot Dip Galvanized Coating on Fabricated Iron and Steel Articles-Specifications and Test Methods Dimension & Threads JIS B 0203 (tapper Pipe Threads). JIS B 2301 (Screwed Type Malleable Cast Iron Pipe Fittings) EN 10242 (Threaded Pipe Fitting in Malleable Cast Iron) ISO 7-I (Pipe threaded where pressure - tight joints are made on the threads - Part 1 : Dimension, Tolerance and Designation)           Selain sambungan pipa, PT. TRI SINAR PURNAMA juga memproduksi berbagai produk pengecoran seperti scaffollding nut, turn buckle, steak plate, gas burner dan produk lain berdasarkan pesanan khusus dari pelanggan dengan harga yang bersaing dan pantas.