Hello Pipe Enthusiasts,
Following our previous topic, “Understanding UL Welded Sprinkler Pipes in Building Fire Protection”, this time we’ll take a closer look at the classification of steel pipes according to Indonesia’s national standard SNI 0039. Did you know that under this standard, steel pipes are categorized into three primary types: Light, Medium, and Heavy? Each type carries distinct characteristics and functions.
What Is SNI and Where Did It Come From?
SNI (Standar Nasional Indonesia) is a national product standard system established by Indonesia’s National Standardization Agency (BSN). Standardization in Indonesia dates back to 1928, and in 1997, BSN was officially formed as the body responsible for issuing SNI at the national level.
Key objectives of SNI include:
- Protecting consumers and public safety
- Improving the competitiveness of domestic products
- Ensuring product quality and alignment with market needs
SNI is developed based on international principles of openness, transparency, and market relevance, allowing Indonesian products to compete globally.
About SNI 0039
SNI 0039 is the Indonesian national standard for steel pipes with or without zinc coating, used for water supply and low-pressure gas installations. This standard has undergone multiple revisions:
- SNI 0039:2010 → Zinc-coated steel pipes (galvanized) for water channels. Focus is only on galvanized pipes; Size limited up to ±6 inches; Does not yet include black pipes (uncoated).
- SNI 0039:2013 → Steel water pipes with or without a zinc coating; Revision of 2010 with coverage expanded up to a diameter of 1,200 mm (48 inches); Regulates galvanized pipes and black pipes; Recognized production: ERW and SAW; Used for clean water, raw water, plumbing, hydrants.
- SNI 39:2024 → Steel pipes for gas and water installations; Expansion of scope to gas installations in addition to water; Adjustment of quality and dimension standards according to the latest industry needs; Harmonization with international standards (ASTM/AWWA); More details on wall thickness and quality testing requirements.
SNI Pipe Classification Overview
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SNI Class
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Diameter Range
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Wall Thickness Range
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Wall Thickness Tolerance
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Tipis / Light
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½ inch (15 mm) - 80 inch (2.000 mm)
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2,0 mm - 14,3 mm
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+10% / −8%
|
|
Medium
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½ inch (15 mm) - 80 inch (2.000 mm)
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2,6 mm - 15,9 mm
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+15% / −10%
|
|
Tebal / Heavy
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½ inch (15 mm) - 80 inch (2.000 mm)
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2,8 mm - 19,1 mm
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+15% / −12.5%
|
Conclusion
Choosing the right steel pipe for construction and technical installations relies heavily on understanding SNI 39 classifications: Light, Medium, and Heavy. This standard not only defines material thickness and tolerance but also mandates testing methods such as hydrostatic and NDT to ensure product integrity.
The gradual revisions from SNI 0039:2013 to the most recent SNI 39:2024 version reflect Indonesia’s commitment to aligning steel pipe product quality with both global standards and domestic technical demands. With nominal diameters ranging from ½ inch to 80 inch and clearly defined tolerances, SNI 39:2024 stands as a vital reference in the national steel pipe industry.
Looking for the most suitable SNI 39 pipe for your project?
Our technical specialists from Bakrie Pipe Industries are ready to assist with needs analysis, product recommendations, and direct consultations.
