UPCOMING QCO ON TEXTILE GOODS BY MINISTRY OF TEXTILE
BIS ISI Certification for Glazed Stoneware Pipes and Fittings – IS 651
BIS ISI certification is mandatory for glazed stoneware pipes and fittings used in drainage and sewage systems as per Indian Standard IS 651:2007. These products are widely used in underground sewerage networks where high resistance to corrosion, abrasion, and chemical attack is essential for long-term performance.
IS 651:2007 was formulated and published by the Bureau of Indian Standards to define strict quality, dimensional, and performance requirements for glazed stoneware pipes and fittings. The standard ensures that products are suitable for handling domestic and industrial sewage under gravity flow conditions.
BIS ISI Mark certification under IS 651 assures compliance with Indian regulatory requirements, improves acceptance in municipal and infrastructure projects, and builds confidence among engineers, contractors, and urban local authorities.
IS 651:2007 – Key Quality & Performance Requirements for Glazed Stoneware Pipes and Fittings
- (i) Manufacture of glazed stoneware pipes and matching fittings
- (ii) High-quality vitrified clay body with uniform glazing
- (iii) Excellent resistance to corrosion, abrasion, and chemicals
- (iv) Adequate crushing strength and load-bearing capacity
- (v) Water absorption limits to ensure durability
- (vi) Dimensional accuracy, straightness, and smooth internal surface
- (vii) Joint performance and watertightness requirements
- (viii) Mandatory marking, batch identification, and traceability
Overview of ISI Mark Certification for Glazed Stoneware Pipes and Fittings (IS 651)
IS 651:2007 covers glazed stoneware pipes and fittings intended for use in underground drainage and sewage systems. These products are designed for gravity flow applications and are particularly suitable for aggressive soil and wastewater environments.
The standard specifies requirements for pipe sizes, wall thickness, crushing strength, water absorption, surface finish, and jointing. Fittings used in conjunction with pipes must also comply with the same quality and performance criteria.
BIS ISI certification under IS 651 is granted only after successful product testing, factory inspection, and verification of quality control systems. Certified glazed stoneware pipes and fittings are permitted to bear the ISI Mark, confirming conformity to Indian Standards and suitability for long-lasting sewerage infrastructure.
Process Required for BIS ISI Mark Certification for Glazed Stoneware Pipes and Fittings (IS 651:2007)
To obtain the BIS ISI Mark for glazed stoneware pipes and fittings under Indian Standard IS 651:2007, manufacturers must comply with the BIS Product Certification Scheme (Scheme I). This certification ensures that stoneware pipes and fittings meet stringent quality, strength, and durability requirements for use in underground drainage and sewage systems.
Estimated Timeline: The BIS ISI certification process for glazed stoneware pipes and fittings generally takes around 30–45 days for Indian manufacturers and up to 180 days for foreign manufacturers, depending on factory preparedness, inspection scheduling, and laboratory testing requirements.
Step-by-Step Certification Process
- Application Submission: Submit the BIS application through the Manak Online portal by providing details of glazed stoneware pipes and fittings, applicable Indian Standard (IS 651:2007), factory address, manufacturing process, kiln details, and product range.
- Testing & Quality Readiness: Ensure availability of testing facilities for crushing strength, water absorption, glaze uniformity, dimensional checks, straightness, and joint performance as prescribed under IS 651:2007.
- Factory Inspection: A BIS officer conducts an on-site inspection to verify raw material handling, shaping and firing process, glazing quality, quality control practices, and compliance with the Scheme of Inspection and Testing (SIT).
- Sample Drawing and Testing: Samples of glazed stoneware pipes and fittings are drawn during inspection and tested in BIS-recognized laboratories as per IS 651:2007 requirements.
- Grant of BIS License: Upon satisfactory inspection and successful test results, BIS grants the Certification Marks License (CM/L), authorizing the manufacturer to use the ISI Mark on glazed stoneware pipes and fittings.
Requirements to Obtain BIS License for Glazed Stoneware Pipes and Fittings (IS 651)
- Compliance of glazed stoneware pipes and fittings with all material, dimensional, strength, and performance requirements specified under IS 651:2007.
- Use of high-quality vitrified clay body with uniform and defect-free glazing.
- Availability of testing facilities for crushing strength, water absorption, glaze resistance, straightness, and dimensional tolerances.
- Appointment of qualified quality control personnel to monitor production and ensure conformity to IS 651 requirements.
- Strict adherence to the Scheme of Inspection and Testing (SIT) and BIS ISI certification guidelines for stoneware pipes and fittings.
To obtain BIS ISI certification for glazed stoneware pipes and fittings under Product Certification Scheme-I, manufacturers are required to submit documents broadly classified into the following categories:
- Administrative Details: Company incorporation documents, factory address proof, GST registration, and statutory approvals.
- Technical Details: Pipe and fitting specifications, nominal diameters, wall thickness, jointing system, firing process, glaze composition, and test parameters as per IS 651:2007.
- Quality Control Personnel Details: Qualifications, experience, and responsibilities of personnel managing quality control and testing.
- Commercial Details: Brand name, trademark registration (if applicable), and authorization documents.
Cost of BIS ISI Certification for Glazed Stoneware Pipes and Fittings (IS 651)
The following are indicative government and related charges involved in obtaining BIS ISI certification for glazed stoneware pipes and fittings under Product Certification Scheme-I. All statutory fees are payable directly to the Bureau of Indian Standards (BIS).
| S. No. | Particular | Amount (INR) | Remarks |
|---|---|---|---|
| 1 | Application Fee | ₹1,000 | Payable to BIS |
| 2 | Inspection / Audit Fee | ₹7,000 | Payable to BIS |
| 3 | Product Testing Fee | As applicable | Depends on pipe size, fittings & laboratory |
| 4 | Marking Fee | As per actual | Based on BIS fee structure |
Important Note: Product testing under IS 651:2007 is a critical stage of the BIS ISI certification process. BIS may conduct a factory pre-assessment to evaluate manufacturing and glazing quality readiness. Charges may vary depending on pipe size, fittings, and testing scope.
Benefits of Getting ISI Mark Certification for Precast Concrete Pipes with and without Reinforcement (IS 458:2021)
Obtaining the ISI Mark for precast concrete pipes under Indian Standard IS 458:2021 offers critical legal, technical, and commercial advantages. ISI certification confirms that reinforced and non-reinforced concrete pipes meet stringent Indian standards for strength, durability, load performance, and long-term service life, making them legally approved for use in drainage, sewerage, culverts, and water infrastructure projects.
1. Mandatory Legal Compliance
Precast concrete pipes used for sewerage, stormwater drainage, culverts, and underground water conveyance are regulated products. ISI Mark certification under IS 458:2021 is mandatory for lawful manufacture and supply in India.
2. Acceptance in Government & Infrastructure Projects
ISI-certified concrete pipes are widely accepted in municipal works, smart city projects, highways, irrigation systems, and public sector infrastructure. Certification simplifies approvals in tenders and technical evaluations.
3. High Structural Strength & Durability
Certified pipes are tested for compressive strength, crushing load, water absorption, and dimensional accuracy, ensuring superior load-bearing capacity and long service life under underground conditions.
4. Enhanced Brand Credibility & Trust
The ISI Mark builds confidence among engineers, consultants, contractors, and government authorities. Certified concrete pipes are recognized as compliant with national quality and safety standards.
5. Competitive Advantage & Business Growth
ISI-certified precast concrete pipes gain preference in large-scale infrastructure, EPC contracts, and government tenders, enabling manufacturers to expand into high-value public and private projects.
Frequently Asked Questions (FAQs) – BIS ISI Certification for Precast Concrete Pipes (IS 458:2021)
1. Is BIS ISI certification mandatory for precast concrete pipes?
Yes. Precast concrete pipes used for drainage, sewerage, culverts, and water conveyance must comply with Indian Standard IS 458:2021. BIS ISI Mark certification is mandatory before manufacturing or supplying these pipes in India.
2. Which Indian Standard applies to precast concrete pipes?
Precast concrete pipes with and without reinforcement are governed by Indian Standard IS 458:2021.
3. Does IS 458 cover both reinforced and non-reinforced pipes?
Yes. IS 458:2021 covers both non-reinforced concrete pipes and reinforced concrete pipes (RCC), classified based on diameter, strength class, and load-bearing requirements.
4. What are the common applications of IS 458 pipes?
IS 458 pipes are widely used in sewerage systems, stormwater drains, culverts, irrigation pipelines, and underground water conveyance systems in urban and rural infrastructure.
6. What tests are conducted under IS 458:2021?
Testing includes compressive strength of concrete, crushing load test, water absorption, dimensional checks, reinforcement placement verification (if applicable), and visual inspection.
7. What are the consequences of supplying non-ISI certified concrete pipes?
Supplying non-ISI certified precast concrete pipes for regulated infrastructure applications may result in penalties, rejection in government tenders, product seizure, and legal action under the Bureau of Indian Standards Act, 2016.
