Is Your Drainage Pipe Really TIS-Certified? 4 Checks Before You Buy

Short answer: A genuinely TIS-certified concrete drainage pipe carries the TIS mark on the product itself, and the standard number must match the product type: tongue-and-groove round pipes use TIS 128-2560, while Box Culverts use TIS 1164-2559, 1165-2559 and 1166-2559. The manufacturer must hold a licence from the Thai Industrial Standards Institute (TISI), which can be verified, and you should request certification documents from the seller before delivery.

Why drainage works should use TIS-certified products

• Project and government works usually specify TIS in the drawings and specifications
• The standard sets dimensions, strength and testing, so you can be confident the pipe carries the load of its specified type

4 checks before you buy

1. TIS mark on the product — look at the actual pipe, not just the brochure
2. Standard number matches the product type — see the table below
3. TISI licence — verifiable on the TISI website by searching the manufacturer name or licence number
4. Type and class match the drawing — e.g. Box Culverts for under footpaths or under traffic must match what the engineer specified; request certificates from the seller before delivery

CCP drainage pipe standards

Products without a TIS standard: what to check instead

• Some products have no TIS standard yet, e.g. the solid manhole
• Check for a clear drawing with stated dimensions and other manufacturer certifications such as Made in Thailand (MiT) — see the Standards and Certifications page

FAQ

Can TIS-certified pipes be used for government projects?

Yes, when the type and class match the drawing. Check the specification in the drawing before ordering.

Can I get TIS documents from CCP?

Yes. Contact our sales team at 092-224-6640 or LINE @ccp-concrete.

What is the difference between under-footpath and under-traffic Box Culverts?

They carry different loads. Choose according to where they are placed in the drawing.

Further reading and orders

Related article: Round pipe vs Box Culvert: which to choose

Products: Tongue-and-groove pipe · Box Culvert

Sales 092-224-6640, 085-123-8961, 081-341-1610, 085-123-7254, 086-983-8709, 061-401-2720, 090-090-4926 · LINE @ccp-concrete