Delivering durable stud bolts made from premium materials for reliable performance in every project.
About Karunia Utama
Karunia Utama is a leading manufacturer of high-quality fasteners and anchor bolts. With a broad spectrum of materials like Carbon Steel, Alloy Steel, and various grades such as A325, Grade 8.8, 10.9, 12.9, and standards including ASTM, JIS, and ISO, we serve diverse industries and applications. For custom bolts, clamp gratings, and bolts of all shapes and sizes, contact us for custom solutions we craft to meet your needs. Our commitment to excellence ensures that you receive reliable products that meet international standards.
Our Products
our international standards
treatment & finishes
tailored solutions
Lengths, diameters, and thread pitches as per specifications
Alternative steel grades and alloys
Metric (M), UNC, UNF, and others
Tensile and hardness testing, Chemical composition analysis, Non-destructive testing (NDT)
Material Test Reports (MTR). Certificates of Compliance, Third-party inspection reports upon request
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FAQs
Yes, we specialize in custom manufacturing to meet specific project requirement
Alloy Steel (ASTM A193-B7, ASTM A193-B8, ASTM A193-B8M, ASTM A320-LZ, ASTM A194-Grade 2H, ASTM A194-Grade 8, ASTM A194-Grade 8M, ASTM A194-Grade 4), Stainless Steel (SUS 304, SUS 316), Carboon Steel (Grade 4.6, Grade 8.8, Grade 10.9 Grade 12.9).
The production time we can offer is approximately 7-14 days, but it depends on the quantity ordered.
Jl. Sedayu City Kelapa Gading Blok A Selatan No 61,
RT.1/RW.9, Cakung Bar., Kec. Klp. Gading, Kota Jakarta Timur,
Daerah Khusus Ibukota Jakarta 13910
