H-32, M.I.D.C. SATPUR, NASHIK-422007 Maharashtra, India
H-32, M.I.D.C. SATPUR, NASHIK-422007 Maharashtra, India
H-32, M.I.D.C. SATPUR
NASHIK-422007 Maharashtra, India
Year of Establishment: 1978
Comprehensive Quality Assurance Plans (QAP), raw compound laboratory testing, 1.5x proof-load verification, and stage-wise third-party inspection support.
Calibrated testing equipment, computerized ODR curemeters, proof load frames, UTM tensile rigs, and rubber compounding QA testing.
Click on the documents below to view the official Quality Assurance Plans (QAP) approved by National Highway authorities and Indian Railways.
Structured quality control plan approved for National Highway (NHAI) and State PWD bridge projects, detailing stage-wise control points:
High-precision testing regime complying with Indian Railways Research Designs and Standards Organisation (RDSO) specifications:
Physical, mechanical, and thermal aging parameters tested according to IS:3400, ASTM, and IRC:83 specifications.
| Test Property | Test Method / Code | Specified Requirement (Natural Rubber) | Specified Requirement (Chloroprene) | Sampling Frequency |
|---|---|---|---|---|
| 1. Hardness (Shore A) | IS: 3400 (Pt 2) / ASTM D2240 | 60 ± 5 IRHD / Shore A | 60 ± 5 IRHD / Shore A | Every Batch / 100% Bearings |
| 2. Minimum Tensile Strength | IS: 3400 (Pt 1) / ASTM D412 | ≥ 17.0 MPa (170 kg/cm²) | ≥ 17.0 MPa (170 kg/cm²) | Every Compounded Batch |
| 3. Minimum Elongation at Break | IS: 3400 (Pt 1) / ASTM D412 | ≥ 400% | ≥ 400% | Every Compounded Batch |
| 4. Accelerated Ageing (70°C / 72h) | IS: 3400 (Pt 4) / ASTM D573 | Tensile: -15% max | Elongation: -30% max | Tensile: -15% max | Elongation: -30% max | Per Lot / Periodic |
| 5. Compression Set (24h / 70°C) | IS: 3400 (Pt 10) / ASTM D395 | ≤ 35% Max | ≤ 30% Max | Per Lot Testing |
| 6. Ozone Resistance Test | IS: 3400 (Pt 20) / ASTM D1149 | No cracks under 20% strain (25 pphm) | No cracks under 20% strain (100 pphm) | Type Test / Periodic |
| 7. Shear Modulus (G-Value) | IRC:83 (Pt II) Appendix 2 | G = 0.8 to 1.2 MPa (± 15% tolerance) | G = 0.8 to 1.2 MPa (± 15% tolerance) | Acceptance Test (Pairs) |
| 8. Compressive Proof Load (1.5x) | IRC:83 (Part II) / RDSO | No cracking, zero splitting, no de-lamination | No cracking, zero splitting, no de-lamination | 100% of Supplied Bearings |
Our plant houses calibrated computerized testing machines ensuring complete verification prior to dispatch.
Electronic UTM with extensometer for tensile strength and elongation at break testing.
Digital temperature-controlled circulating oven for 70°C / 72-hour thermal stability tests.
High-tonnage hydraulic test rig verifying 1.5x design vertical load without bulging failure.
International Rubber Hardness Degree (IRHD) tester for micro/macro hardness testing of bearing elastomers per IS:3400.
In-house testing of rubber compounds to evaluate heat build-up and flexing behaviour under repeated cyclic compression.
Used for laboratory testing, such as determining ash content of rubber compounds, where applicable.
Used to determine the density or specific gravity of rubber compounds and specimens.
Precision rheometer evaluating scorch time, optimum cure time (Tc90), and batch-to-batch compounding consistency.
We regularly facilitate independent third-party inspection (TPI) authorities and client representatives for raw-compound sampling, dimensional verification, dual-bearing shear modulus testing, and 100% finished bearing proof-load testing at our Nashik plant.
Research Designs and Standards Organisation (Indian Railways) official approval and test compliance conforming to RDSO BS-131 specifications.
Official stage-wise Quality Assurance Plan approved for National Highway (NHAI) bridge projects detailing routine and acceptance test witness.
Official project engineer witness clearance and acceptance letter for high-tonnage elastomeric bearings supplied for National Highway bridge corridors.
Official IRMRI membership certificate documenting membership credentials.
Certificate document issued by R K Technologies.
Official bond document between V-Chem and Polymer Products.
Inspecting officers and client engineers observing proof-load verification and shear testing on the 750-Ton hydraulic test rig.
