Quality Control
Quality Policy
Shree TNB Polymers Limited is fully committed to operating with a strong focus on safety, reliability, and product quality. Our primary objective is to consistently meet customer requirements, ensuring long-term growth and sustainability of the company.
At TNB, quality is a measure of our performance as experienced by our customers. Every employee is a responsible member of our team and ensures that all products comply with contractual, legal, and internal quality standards.
Customer needs guide our processes and decision-making. Regular evaluation and benchmarking are carried out based on best industry practices, while a preventive and proactive approach is applied across all operations to maintain consistent product quality and performance.
Facility and laboratory
The company has a well-equipped laboratory of international standards to conduct all stringent tests required as per BIS standards for piping and micro irrigation systems. The lab also performs various tests in accordance with international standards, ensuring superior product quality and long-term durability.
This advanced testing infrastructure helps us deliver high-performance, reliable, and trouble-free products for irrigation and piping applications.
At TNB, we are committed to delivering products and services that ensure total customer delight, focusing on:
- Product quality
- Cost efficiency
- Timely delivery
- Reliable after-sales support
The company follows globally recognized ISO certification standards:
- ISO 9001:2015 – Quality Management System
- ISO 14001:2015 – Environmental Management System
BIS Licenses & Standards
Our products comply with major BIS standards for piping and irrigation systems:
- ISO 4427 – HDPE Pipes
- IS 13488:2008 – Emitting Pipes
- IS 12786:1989 – Lateral Pipes
- IS 14151 (Part-2): 2008 – Sprinkler QAC Pipes
- IS 4984:2016 – PE Pipes for Water Supply
- IS 14333:2022 – HDPE Pipes for Sewerage
Tests Performed
Below are the types of tests performed in our laboratory for HDPE pipes, PP pipes, and drip irrigation systems to ensure quality, strength, and durability:
- Carbon Black Content / Dispersion Test
- Oxidation Induction Test (OIT)
- Internal Pressure Creep Rupture Test
- Tensile Strength Test (Butt/Fusion Joint)
- Impact Strength Test (IZOD/Charpy)
- Slow Crack Growth Resistance Test
- Resistance to Tension at Elevated Temperature
- Creep Strength Test
- Heat Reversion Test
- Hydrostatic Pressure Test (for pipes and emitting pipes)
Testing Equipment & Apparatus
The laboratory is equipped with advanced and precise instruments, including:
- Air Circulating Oven
- Hydrostatic Pressure Testing Machine
- Hot Water Bath
- Melt Flow Index (MFI) Tester
- Carbon Black Content & Dispersion Tester
- Microscope
- Hot Plate
- Oxygen Index Tester
- IZOD / Charpy Impact Tester
- Tensile Testing Machine (UTM)
- Heat Distortion Temperature Tester
- Vicat Softening Point Tester
- Environmental Stress Cracking Resistance Tester
- Specific Gravity Tester
- Hot Compression Molding Machine
- Bulk Density Tester
- Shore D Hardness Tester
- Micrometer & Vernier Caliper
- Precision Measuring Instruments
Details
“NOBLE” Brand Piping Systems
The company uses state-of-the-art pipe extrusion technology from globally recognized manufacturers such as Kabra Extrusiontechnik Ltd. (in collaboration with Germany-based Battenfeld Extrusiontechnik), along with advanced machinery from American and German companies.
These facilities enable the production of high-quality HDPE and PP pipes and fittings ranging from 20 mm OD to 630 mm OD.
“TIRUPATI” Brand Solid Polymer Sheets
Equipped with advanced AMUT Italy sheet extrusion lines, the company manufactures high-quality solid extruded polymer sheets using modern technology.
“WELLPACK” PP Hollow Profile Sheets
Two advanced production lines sourced from Taiwan-based companies ensure the manufacturing of high-quality PP hollow profile sheets, supported by imported accessories and machinery.
Tester
Our laboratory is equipped with a wide range of advanced and precision testing instruments to ensure accurate evaluation of piping systems, raw materials, and irrigation components. These testing facilities help maintain strict quality standards as per BIS and international specifications.
- Computerized Hydrostatic Pressure Testing Machine (0–100 kg/cm² range)
- Hydraulic Press with Dumbbell Die for UTM
- Air Circulating Oven (Model: HAO-A)
- Fully Automatic MFI Tester
- Electronic Specific Gravity Balance
- Carbon Black Dispersion Tester
- Digital Hot Press for Density Testing
- Stainless Steel Hot Water Bath with End Fittings
- Density Tester
- Digital Charpy Impact Tester
- Digital VSP / HOT Tester
- Bulk Density Tester
- OIT Tester
- Chemicals & Glassware for Testing