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NTPC Limited Steel Pipe Flanges Tender 2026 Ntpc procurement IS 6392 Q3 Rajasthan

Bid Publish Date

09-Feb-2026, 12:57 pm

Bid End Date

16-Feb-2026, 5:00 pm

Value

₹2,00,000

Location

NALANDA , BIHAR

Latest Corrigendum Available

Progress

Issue09-Feb-2026, 12:57 pm
Corrigendum12-Feb-2026
Award27-Feb-2026, 12:56 am
Explore all 4 tabs to view complete tender details

Quantity

130

Category

Steel Pipe Flanges as per IS 6392

Bid Type

Single Packet Bid

Key Highlights

  • • IS 6392 (Q3) compliance for steel pipe flanges with ISME classification requirements
  • • ASME B16.5 Class 150 equivalence for water-service flanges
  • • ISO 9001 certification required for bidder or OEM
  • • Mandatory Material Test Certificate to be supplied with goods
  • • 12-month guarantee from commissioning or 18 months from supply
  • • Supply-only scope with all costs included in bid price
  • • Option clause to adjust quantity up to 25% during contract tenure
  • • 64- bit details: 80 NB and 100 NB flange quantities specified

Categories 9

CARBON STEEL PIPE VALVE PARTS AND ACCESSORIES GALVANISED PIPE SEAMLESS PIPE PIPE FLANGES TUBES AND PIPES PIPE PROJECT STEEL PIPE WATER SUPPLY MATERIAL

Tender Overview

NTPC Limited invites bids for steel pipe flanges manufactured to IS 6392 (Q3) with varied nominal sizes to support water-service piping. Estimated contract value is around ₹200,000 with a supply-only scope and delivery commitments tied to option clauses. The procurement targets carbon steel flanges with forgings, castings, and rolled plate materials, including welding neck, plate, screw boss, slip-on, and integral flange variants. Notable items include 80 NB welding-flange assemblies and 100 NB equivalents, both in water service, sourced to meet ASME B16.5 Class 150 equivalents, with precise material specifications from the buyer’s terms. The bid highlights emphasize material test certificates and ISO 9001. This tender focuses on standardized flange categories, batch-level QA, and supplier qualification for government-grade flange supply in line with NTPC’s equipment standards.

Technical Specifications & Requirements

  • Items: Welding neck, plate, screw boss, slip-on boss, loose, integral, and blank flanges across multiple nominal pressures; design to IS 6392 (Q3) and ASME B16.5 Class 150 equivalents for water service
  • Nominal Sizes: 80 NB and 100 NB specified in ATC for welding/flanges
  • Materials: Carbon steel forgings, castings, and rolled plates; corrosion-resistant options not specified
  • Documentation: Materials Test Certificate (MTC) to accompany supply; ISO 9001 certification required for bidder or OEM
  • Warranty & QA: 12 months guaranteed from commissioning or 18 months from supply; buyer lab to determine acceptance via lab results
  • Scope: Pure supply of goods; CAD/BOM references not listed; delivery terms aligned with option clause in terms and conditions

Terms, Conditions & Eligibility

  • EMD: Not specified in provided data; bidders should verify at bidding stage
  • Delivery: Delivery period governed by option clause; baseline delivery commences after last order date; minimum extension 30 days
  • Certification: ISO 9001 certification mandatory for bidder or OEM; MTC required with supply
  • Documentation: PAN, GSTIN, cancelled cheque, EFT mandate; essential bid certificates and authorizations
  • Payment & Scope: Supply-only contract with all cost components included in bid price; no post-delivery service clause mentioned
  • Warranty/Penalties: 12-month material guarantee; penalty clauses not detailed in data

Key Specifications

  • IS 6392 (Q3) compliance for steel pipe flanges

  • Nominal sizes: 80 NB and 100 NB for welding neck and related flange types

  • Materials: carbon steel forgings, castings, rolled plates

  • ASME B16.5 Class 150 equivalent for water service

  • MTC with every delivery; ISO 9001 certified supplier

  • 12-month guarantee from commissioning or 18 months from supply

Terms & Conditions

  • Delivery quantity adjustments allowed up to 25% during contract

  • Supply-only contract; all bidding documents must be uploaded

  • Mandatory ISO 9001 certification and MTC with each lot

Important Clauses

Payment Terms

Supply-only contract; payment terms not explicitly stated; verify during bid submission

Delivery Schedule

Delivery period defined by option clause; extended delivery time formula based on quantity variation

Penalties/Liquidated Damages

Not detailed; subject to purchaser terms; ensure clarity in contract

Bidder Eligibility

  • ISO 9001 certification for bidder or OEM

  • Experience in supplying carbon steel flanges per IS/ASME standards

  • Demonstrated ability to provide MTC with each shipment

Documents 4

GeM-Bidding-8954253.pdf

Main Document

CATALOG-Specification-1

CATALOG Specification

CATALOG-Specification-2

CATALOG Specification

GEM General Terms and Conditions Document

GEM_GENERAL_TERMS_AND_CONDITIONS

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Technical Specifications 2 Items

Item #1 Details

View Catalog
Category Specification Requirement
ITEM Type of Flanges Cast, Forged, Plate, Flat Steel Pipe
ITEM Uses Oil, Gas, Water, Steam, Air, Chemical Services
ITEM Class 0.1, 0.25, 0.60, 1.0, 1.6, 2.5, 4.0, 6.4, 10.0, 16.0
DEGIGN Design of flanges Integral, Welding Neck, Plate, Screwed Boss, Slip-on Boss, Loose flanges for welded-on lapped pipe ends, Blank
MATERIALS Material of Forgings Carbon steel, Carbon molybdenum steel, 1 percent chromium-0.5 percent molybdenum steel, 2.25 percent chromium-1 percent molybdenum steel, NA
MATERIALS Material of Casting Carbon steel, Carbon molybdenum steel, 2.25 percent chromium-0.5 percent molybdenum steel, 2.25 percent chromium-1 percent molybdenum steel, NA
MATERIALS Material of Rolled Plates Carbon steel, Carbon molybdenum steel, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 0 point 25 N/mm2) 1200, 1400, 1600, 1800, 2000, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 0 point 60 N/mm2) 80
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 1 N/mm2) 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 1point 6 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 160, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 2 point 5 N/mm2) 175, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 4point 0 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 6point4 N/mm2) 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 10 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, NA
DIMENSION Nominal Size of welding neck flanges(Nominal pressure 16 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 0point60 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 1 N/mm2) 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, NA, 25, 50, 80, 100, 150
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 1point6 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 2point5 N/mm2) 175, 200, 250, 300, 350, 400, 500, 600, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 4point0 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 6point4 N/mm2) 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 10 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Plate flanges for welding(Nominal pressure 16point0 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, NA
DIMENSION Nominal Size of Plate blank flanges(Nominal pressure 0point60 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Plate blank flanges(Nominal pressure 1 N/mm2) 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Plate blank flanges(Nominal pressure 1point6 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Plate blank flanges(Nominal pressure 2point5 N/mm2) 175, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Plate blank flanges(Nominal pressure 4point0 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, NA
DIMENSION Nominal Size of Screwed boss flanges(Nominal pressure 0point60 N/mm2) 6, 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, NA
DIMENSION Nominal Size of Screwed boss flanges(Nominal pressure 1 and 1point6 N/mm2) 6, 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, NA
DIMENSION Nominal Size of Screwed boss flanges(Nominal pressure 2point5 and 4 N/mm2) 6, 8, 10, 15, 20, 35, 32, 40, 50, 65, 80, 100, 125, 150, NA
DIMENSION Nominal Size of Screwed boss flanges(Nominal pressure 6 point 4 N/mm2) 50, 65, 80, 100, 125, 150, NA
DIMENSION Nominal Size of Screwed boss flanges(Nominal pressure 10 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, NA
DIMENSION Nominal Size of Slip-On Boss Flanges for Welding(Nominal pressure 0point60 N/mm2) 6, 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 3000, NA
DIMENSION Nominal Size of Slip-On Boss Flanges for Welding(Nominal pressure 1 N/mm2) 80, 100, 125, 150, 200, 250, 300, NA
DIMENSION Nominal Size of Slip-On Boss Flanges for Welding(Nominal pressure 1 point 6 N/mm2) 6, 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, NA
DIMENSION Nominal Size of Slip-On Boss Flanges for Welding(Nominal pressure 2point5 N/mm2) 6, 8, 10, 15, 20, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, NA
DIMENSION Nominal Size of Slip-On Boss Flanges for Welding(Nominal pressure 4point0 N/mm2) 6, 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, NA
DIMENSION Nominal Size of Loose flanges for welded on lapped pipe ends(Nominal pressure 0 point 60 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, NA
DIMENSION Nominal Size of Loose flanges for welded on lapped pipe ends(Nominal pressure 1 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, NA
DIMENSION Nominal Size of Integral Flanges(Nominal pressure 1 point 6 N/mm2) 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, 2200, NA
DIMENSION Nominal Size of Integral Flanges(Nominal pressure 2 point 5 N/mm2) 175, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, NA
DIMENSION Nominal Size of Integral Flanges(Nominal pressure 4point 0 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, NA
DIMENSION Nominal Size of Integral Flanges(Nominal pressure 6point4 N/mm2) 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, NA
DIMENSION Nominal Size of Integral Flanges(Nominal pressure 10 N/mm2) 125, 150, 175, 200, 250, 300, 350, 400, 500, 600, 700, NA
DIMENSION Nominal Size of Integral Flanges(Nominal pressure 16 point0 N/mm2) 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 175, 200, 250, 300, NA

Required Documents

1

GST registration certificate

2

PAN card copy

3

Experience certificates in similar flange supply

4

Financial statements demonstrating stability

5

EMD/Security deposit as applicable (not specified, verify during bid)

6

Technical bid documents demonstrating IS 6392 (Q3) compliance

7

OEM authorization (if bidding as a reseller)

8

ISO 9001 certificate ( bidder or OEM )

9

Material Test Certificate (MTC) with each shipment

10

Cancelled cheque and EFT mandate

Corrigendum Updates

1 Update
#1

Update

12-Feb-2026

Extended Deadline

16-Feb-2026, 5:00 pm

Opening Date

16-Feb-2026, 5:30 pm

Financial Results

Rank Seller Price Item
L1MACRONIX METAL INDUSTRIES   Under PMA₹1,04,820Item Categories : Steel Pipe Flanges as per IS 6392,Steel Pipe Flanges as per IS 6392
L2JAY BALAJI PIPE AND PIPEFITTING   Under PMA₹1,10,250Item Categories : Steel Pipe Flanges as per IS 6392,Steel Pipe Flanges as per IS 6392
L3B.N. PAUL & CO.( MSE Social Category:General )    Under PMA₹1,23,310Item Categories : Steel Pipe Flanges as per IS 6392,Steel Pipe Flanges as per IS 6392
L4MECH WELL FITTINGS PRIVATE LIMITED( MSE Social Category:General )    Under PMA₹1,31,000Item Categories : Steel Pipe Flanges as per IS 6392,Steel Pipe Flanges as per IS 6392

Contract / Result Documents 1

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Frequently Asked Questions

Key insights about BIHAR tender market

How to bid for Ntpc steel flange tender in 2026?

Bidders must meet ISO 9001 criteria, provide MTC with each shipment, and submit GSTIN, PAN, cancelled cheque, and EFT mandate. The procurement targets IS 6392 (Q3) compliance with 80 NB and 100 NB flanges for water service, with supply-only terms.

What documents are required for Ntpc flange bid in 2026?

Submit GST registration, PAN card, experience certificates for carbon steel flanges, financial statements, MTC with each lot, ISO 9001 certificate (bidder or OEM), OEM authorization if applicable, and EFT mandate. Ensure all certificates uploaded to avoid rejection.

What are the technical standards for Ntpc water flange supply?

Flanges must comply with IS 6392 (Q3) and offer ASME B16.5 Class 150 equivalents for water service. Material options include carbon steel forgings, castings, and rolled plates; MTC required per shipment and ISO 9001 certified supplier.

What is the delivery scope and quantity for Ntpc flanges?

The ATC specifies 80 NB and 100 NB flange quantities for welding-related classes, intended for water service. The contract allows up to 25% quantity variation under the option clause; delivery timelines follow the extended period rule.

What is the warranty and QA requirement for Ntpc flange supply?

Materials are guaranteed for 12 months from commissioning or 18 months from supply, whichever is earlier. Each shipment must include an MTC; buyer lab results govern acceptance and compliance with ISO 9001 standards.

How does the option clause affect delivery deadlines for Ntpc?

The purchaser may increase/decrease quantity up to 25% and extend delivery time using the formula (Increased quantity ÷ Original quantity) × Original delivery period, with a minimum of 30 days; original period governs if below 30 days.