What is TIS PVC Pipe and Fitting? Standards, Types & Uses Explained

PVC (Polyvinyl Chloride) pipes are among the most widely used piping materials in construction, agriculture, and infrastructure development due to their durability, low cost, and chemical resistance. In Thailand and across many other countries, TIS PVC pipe and fitting products are considered the gold standard in ensuring compliance with safety and quality benchmarks.

This article explores what TIS PVC pipes and fittings are, their importance, standards, types, applications, and why manufacturers prioritize producing products certified under the Thai Industrial Standards (TIS).

TIS PVC Pipe and Fitting

What Does TIS Stand For?

TIS stands for Thai Industrial Standards, regulated by the Thai Industrial Standards Institute (TISI), a governmental agency under the Ministry of Industry. TISI sets the minimum safety, quality, and performance standards for a broad range of products, including electrical goods, construction materials, and piping systems.

When a PVC pipe or fitting is labeled TIS-certified, it means the product has undergone rigorous testing and quality assurance based on TISI’s national benchmarks, making it safe and reliable for long-term use.

Why TIS Certification Matters for PVC Pipe Systems?

TIS certification for PVC piping is not merely a formality—it provides real value in the following ways:

Safety Compliance: TIS-certified pipes are free of hazardous substances and are safe for potable water and food-related applications.

Durability: The certification process tests for pressure resistance, UV stability, and chemical compatibility.

Standardization: TIS ensures consistent dimensions and performance across all TIS PVC pipe and fitting products, improving compatibility and reducing installation errors.

Government Approvals: For public infrastructure and municipal projects, TIS compliance is often a mandatory requirement.

TIS Standards for PVC Pipes and Fittings

Different types of PVC pipes fall under different TIS codes. The most common standards include:

TIS Code	Application	Description
TIS 17-2532	Water supply and pressure pipelines	Specifies the dimensions, pressure ratings, and material specs for rigid PVC water pipelines.
TIS 1131-2535	Electrical conduits	Specifies standards for non-pressure, flame-retardant PVC electrical conduits.
TIS 1095-2535	Drainage and waste piping	Covers pipes used in gravity-fed drainage systems.

These standards ensure compatibility and performance across the full spectrum of use, from drinking water delivery to underground electrical conduit protection.

Types of TIS PVC Pipes

TIS PVC pipes come in various configurations to suit different needs:

UPVC Pipes (Unplasticized PVC)

These rigid pipes are commonly used for water supply systems. uPVC is lead-free, corrosion-resistant, and suitable for high-pressure systems.

Common uses: Residential plumbing, agricultural irrigation, high-rise water systems.

TIS standard: TIS 17-2532

PVC Electrical Conduits

These are lighter, flexible, and flame-retardant pipes used to protect electrical wiring in residential and commercial buildings.

Common uses: Wiring channels in construction projects.

TIS standard: TIS 1131-2535

PVC Drainage Pipes

Used in non-pressure applications, these are ideal for wastewater and rainwater drainage.

Common uses: Sewerage systems, stormwater systems, and indoor plumbing waste.

TIS standard: TIS 1095-2535

Common Types of PVC Fittings

Alongside pipes, TIS-certified PVC fittings ensure leak-free, robust joint systems. These fittings include:

Elbows (90° and 45°): Change the direction of flow.

Tees and Crosses: Branch the pipeline into different directions.

Couplings and Sockets: Connect two pipes in a straight line.

End Caps and Bushings: Seal off or adjust pipe ends.

Reducers: Transition between different pipe sizes.

Using TIS PVC fittings helps maintain consistency in internal diameter, joint strength, and resistance to external stress.

OEM ODM TIS PVC Pipe and Fittings

Key Applications of TIS PVC Pipes and Fittings

The flexibility and range of TIS PVC products make them indispensable across industries. Here are some key sectors where they are commonly used:

Building Construction: TIS PVC pipes are widely used in residential and commercial plumbing systems. Their lightweight and corrosion-resistant nature makes them ideal for both cold and hot water distribution.

Agriculture: PVC irrigation systems—especially sprinkler and drip systems—benefit from TIS-certified PVC pipes due to their UV resistance and pressure stability.

Infrastructure Projects: Municipal water supply networks, sewerage systems, and electrical wiring conduits all rely heavily on TIS-compliant products.

Industrial Applications: Industries dealing with chemicals or high-pressure fluids prefer TIS uPVC pipes for their chemical resistance and strength.

How to Identify Genuine TIS-Certified Products?

To ensure compliance and avoid counterfeit materials:

● Look for the TIS logo and number on each pipe or fitting.

● Request a Certificate of Conformity from the supplier.

● Buying from recognized TIS PVC pipe manufacturers ensures adherence to both local and international quality benchmarks.

Where to Find TIS PVC Pipe and Fittings?

Finding a trusted source for TIS PVC pipe and fitting products is essential to ensure compliance, durability, and cost-effectiveness in construction, infrastructure, and industrial applications. One highly recommended supplier is ULP, a globally recognized solution provider for plastic piping systems.

ULP serves customers in over 60 countries and regions, offering complete piping system solutions for a wide range of applications. Our core product lines include:

● Water plumbing and fittings systems

● Electrical conduit and fittings systems

● Fire sprinkler pipe and fitting systems

What sets ULP apart is not only our compliance with TIS (Thai Industrial Standards) but also our coverage of international standards such as SCH40/SCH80, ISO, DIN, BS EN, ASTM, GB, and more, making their systems highly adaptable to global market demands.

One-stop Pipeline and Accessory Manufacturer

ULP manufactures over 20 series of plastic piping systems, including PVC-U, PVC-C, PPR, HDPE, EMT, IMC, PVC-M, O-PVC, and UH-PVC. The vast product range enables ULP to meet highly specific project needs in sectors like construction, infrastructure, agriculture, and industrial fluid handling.

In addition to manufacturing, ULP is committed to customized pipeline solutions, offering worry-free services from consultation to delivery. Their advanced production technology, environmentally friendly materials, and experienced global supply chain management make us more than just a manufacturer—they are a trusted partner in project success.

If you're looking for a TIS PVC pipe manufacturer or need multi-standard product support for global projects, ULP is your go-to solution provider.

Raw material	PVC
Standards	TIS
Dimensions	According to the product
Color	Yellow, White, Black, or Customized
Application	Underground and above construction
Feature	Character-flame resistant, UV resistant, corrosion resistant, etc
Custom made	Flexible OEM/ODM-size, colors, and packaging can be customized
Tensile strength	5,000 psi (3.45 KN/cm²)
Extrusion	Fusion
Water absorption	﹤0.50% of the whole weight after soak
Resistance to crushing	ID≥70% after the test
Resistance to impact	Less than 3 of 1/32 inch cracks & tears
Deflection unde load	﹤0.25mm deformation
Fire rating	UL 94V-0
Resistance to specific reagents	Less ±2.50% weight after 60 / 120 days soak
Permanency of printing	Yes
Rust & sunlight Resistant	Yes
Shipping	By sea
Samples	Available

TIS PVC Pipe and Fittings Manufacturer and Supplier

Final Thoughts

With standardized performance and safety benchmarks, TIS PVC pipe and fitting systems products are essential in water supply, electrical systems, waste management, and beyond. Whether you're sourcing for a government infrastructure project or residential development, choosing TIS-certified PVC piping solutions ensures your project is built on reliable, compliant, and long-lasting materials.

ULP doesn’t just manufacture pipes—they provide complete system solutions with innovation, efficiency, and environmental responsibility. Contact ULP for reliable, custom TIS PVC pipe and fittings.