Quality & Standards
Commitment to Excellence
At Thompson Pipe Group, quality is more than a production metric—it’s a company-wide philosophy. Our management systems prioritize customer satisfaction, occupational health and safety, and environmental responsibility. Every product is manufactured under certified systems:
- ISO 9001 – Quality Management
- ISO 14001 – Environmental Management
- ISO 45001 – Occupational Health & Safety
We adhere to internationally recognized standards, with all required tests conducted in accredited laboratories.
Quality Assurance Through Rigorous Testing
Our testing protocols ensure long-term reliability and compliance with international standards. Testing begins with raw materials and continues through production and qualification.
Production Control Tests Include:
- Visual Inspection
- Barcol Hardness
- Dimensional Checks (pipe length, diameter, wall thickness)
- Hydrostatic Leak Tightness Test (for pressure pipes)
Additional Sampling Tests further validate product integrity:
- Pipe Stiffness Determination
- Deflection without Damage or Structural Failure
- Axial & Circumferential Tensile Strength
- Composition Analysis
Qualification Testing for Long-Term Performance
To confirm long-term performance and establish design criteria, our pipes are also subjected to extensive short- and long-term qualification testing. These programs extend beyond 10,000 hours, providing data that demonstrate reliable performance over a 50-year service life.
Qualification Tests Include:
- Strain Corrosion Testing
- Hydrostatic Design Basis (HDB)
- Abrasion Resistance
- Joint Qualification
- Water Jetting Resistance
- Long-Term Ring Bending Strain
- Long-Term Specific Ring Stiffness
Material Properties of TPG FRP
TPG FRP is a cost-effective solution with low installation and operating costs, long service life, and high performance for sewer, hydroelectric, and industrial projects. Its ultra-smooth bore and engineered features deliver optimal hydraulic efficiency and life-cycle value.
Other TPG FRP properties, which are useful when designing a project with fiberglass pipe include:
Key Properties:
- Hazen-Williams flow coefficient: C = 150
- Low friction = reduced pumping energy and operating costs
- Manning’s “n” coefficient: 0.009
- Minimal slime buildup = lower cleaning costs
- Excellent abrasion resistance
- Colebrook-White coefficient: 9.5 x 10⁻⁵ ft
- Poisson’s ratio: 0.22 – 0.29
Thermal expansion coefficient: 13 – 17 x 10⁻⁶ in/in/°F
Integrated Resources & Standards
AWWA C-950
Fiberglass Pressure Pipe
ASTM D3754
Standard Specification for Sewer and Industrial Pressure Pipe
ASTM D3517
Standard Specification for FRP Pressure Pipe
ASTM D3262
Standard Specification for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Sewer Pipe
ISO 10639
Plastics piping systems for pressure and non-pressure water supply — Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin
ISO 10467
Plastics piping systems for pressure and non-pressure drainage and sewerage — Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin
ISO 25780
Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sewerage — Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin – Pipes with flexible joints intended to be installed using jacking techniques
EN 1796
Plastics piping systems for water supply with or without pressure – Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP)
EN 14364
Plastics piping systems for drainage and sewerage with or without pressure – Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) – Specifications for pipes, fittings and joints
DIN 16868
Glass fibre reinforced unsaturated polyester resin (UP-GF) pipes
Quality Assurance Through Rigorous Testing
At Thompson Pipe Group, every product is backed by a comprehensive testing program that ensures long-term reliability, durability, and compliance with international standards. Testing begins with raw materials and continues throughout production and qualification, providing confidence that our pipes will perform for decades in service.
Production Control Tests
From the delivery of raw materials to the shipment of finished products, strict control measures are in place. Raw materials arrive with supplier certifications and are further verified through incoming laboratory tests before use.
During production, every pipe undergoes performance checks, including:
- Visual Inspection
- Barcol Hardness
- Dimensional Checks (pipe length, diameter, wall thickness)
- Hydrostatic Leak Tightness Test (for pressure pipes)
Additional sampling tests further validate product integrity:
- Pipe Stiffness Determination
- Deflection without Damage or Structural Failure
- Axial and Circumferential Tensile Strength Tests
- Composition Analysis
Qualification Tests
To confirm long-term performance and establish design criteria, our pipes are also subjected to extensive short- and long-term qualification testing. These programs extend beyond 10,000 hours, providing data that demonstrate reliable performance over a 50-year service life.
Qualification tests include:
- Strain Corrosion Testing
- Hydrostatic Design Basis (HDB)
- Abrasion Resistance
- Joint Qualification Tests
- Water Jetting Resistance Testing
- Long-Term Ring Bending Strain
- Long-Term Specific Ring Stiffness
Properties
TPG FRP is cost-effective, with low initial installation costs, long effective service life, and low operating costs for your sewer, hydroelectric, or industrial project. It offers an extremely smooth bore with a list of other features, all of which add up to provide you with the optimum installed and life-cycle cost system.
- Hazen-Williams flow coefficient of C=150
- Low friction means less pumping energy needed and lower operating costs
- Manning’s “n” flow coefficient of 0.009
- Minimal slime buildup means lower cleaning costs
- Excellent abrasion resistance
Other TPG FRP properties, which are useful when designing a project with fiberglass pipe include:
- Colebrook-White coefficient may be taken as 9.5 x 10-5 ft
- Polsson’s ratio ranges from 0.22 to 0.29
Thermal coefficient of axial expansion and contraction for TPG FRP pipe is 13 to 17 x 10-6in/in/oF
Product Range
The Next Generation of Pipe Solutions.
The widest range of precast, pressure, and trenchless pipe solutions in North America, backed by industry-leading engineering and logistics. Thompson Pipe Group delivers all that.
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