Groundwater drilling contractors in Kanpur and surrounding districts can use this guide to prepare an IS 4270 water-well tube enquiry. Bore depth alone does not determine a safe casing: the drilling engineer must assess soil and water pressure, the suspended string, handling loads, corrosion allowance, joint design and installation method before selecting grade and wall thickness. Submit that project specification, quantity and destination PIN for an order-specific written quotation.
Casing Design Inputs to Put in the RFQ
| Design input | Buyer-provided detail | Why it matters |
|---|---|---|
| Bore and geology | Depth, diameter, strata and water levels | Defines the pressure and support case to assess |
| Casing string | OD, wall, grade, joint and unsupported intervals | Allows axial, buckling and connection checks |
| Installation | Lowering, driving, handling and unloading method | Captures loads beyond normal service pressure |
Build a design-led borewell RFQ in Kanpur
Begin with the approved bore plan, casing outside diameter, wall thickness, grade, connection, screen arrangement and acceptance documents rather than a depth-to-grade shortcut. For coupled or flush-joint construction, state the maximum connection envelope permitted by the borehole and the required thread or weld detail. Slotted-screen geometry belongs in the project design and should follow the aquifer or filter-pack assessment supplied by the responsible geologist.
Borewell tubes may be ordered as long sections, so the RFQ should state bundle protection, end protection, unloading responsibility and delivery PIN. Require the written offer to state its source basis, availability, proposed dispatch window, freight basis, payment terms and traceability scope. For collection, declare the proposed vehicle and legal payload; for delivery, provide route, material length and unloading-access details without assuming acceptance or timing.
How wholesale pricing works for this product
A comparable borewell-casing offer identifies the exact IS 4270 material line, any ordered coating requirement, dimensions, connection machining, screen work, inspection scope, quantity, packing and delivery basis. Mill origin, conversion, freight and other commercial inputs can differ between offers. Quantity alone does not establish a truck type or per-kilogram saving, so compare only the fields written into each quotation.
- Record whether the offer is per kilogram, per metric ton, per length, or another stated basis.
- Require the offer to distinguish theoretical, actual or piece-based billing and the applicable tolerance.
- Ask for the vehicle, legal payload, route, loading and unloading basis; do not assume a freight advantage.
Collection or delivery terms for long casing
State whether the enquiry is for collection in Kanpur or delivery to a named PIN. The written quotation should identify whether the proposed material is locally held or mill-sourced, along with its dispatch estimate, freight basis, packing and unloading responsibility. Those terms are proposals until accepted, and transit protection does not replace receipt inspection.
Provide the required date, vehicle type, legal payload, length capacity and loading responsibility.
Provide the destination PIN, route constraints, unloading access and required-at-site date for a written estimate.
Documents to name in the RFQ
Traceability requirements differ by mill, product and project. State the required MTC, inspection, marking, weighment and statutory records in the RFQ so their availability and cost can be confirmed before the purchase order.
- Mill Test Certificates (MTC), where specified and available for the offered material.
- Delivery challan and weighment record on the basis agreed in the order.
- Applicable e-way bill and tax-invoice requirements, confirmed for the accepted transaction.
Who drill & borewell pipes are for (and who should NOT use them)
Use IS 4270 where the approved water-well specification calls for steel tubes for that scope. A Kanpur RFQ may describe a groundwater, irrigation or public-water project, but the buyer must supply the controlling drawing, authority requirements and inspection plan. This page does not claim a named authority, contractor or local buyer as a customer, and the project label does not select grade, wall or connection.
Do not substitute an IS 4270 water-well tube into steam, boiler, process, hydraulic-cylinder, petroleum or another service from a dimensional match. The responsible designer must name the governing product and design code, material, loads, temperature, pressure, corrosion allowance, joining and statutory boundary. Where IBR applies, the approved inspection plan may require Form III-A for steam pipes, Form III-B for boiler tubes, and Form III-C for boiler mountings and fittings; it does not make one ASTM or DIN grade universally mandatory.
How to specify borewell pipes: A detailed RFQ checklist for Kanpur buyers
A casing error can be difficult to recover after installation. For a complete Kanpur quotation request, include these ten project-controlled parameters:
- Nominal Bore (NB): Specify the required nominal bore (e.g., 100 mm NB, 150 mm NB, 200 mm NB) along with the exact outer diameter (e.g., 114.3 mm, 168.3 mm, 219.1 mm).
- Wall Thickness (WT): Define the exact wall thickness (e.g., 5.0 mm, 5.4 mm, 6.0 mm, 7.1 mm) per the target borehole depth and soil lateral pressure.
- Steel Grade: State the project-selected grade and governing standard. Grade is one input to the casing design; it cannot be selected safely from depth alone.
- End Connection Type: Choose Plain Ends (PE) for welding, Beveled Ends (BE), Screwed ends with external couplings (S&C), or Flush Joints (threaded internally) to maintain a constant outer diameter.
- Joint design: Copy the approved thread or welded-joint geometry, coupling, make-up method, inspection, and suspended-load basis from the well design and applicable standard. Do not select a V, trapezoidal, or square thread from a generic load label.
- Pipe length: State the required or acceptable length range, joint count, rig-mast clearance, handling plan, and any exact cut length. Confirm the offered length and tolerance in the written quotation.
- Surface protection: Select black, temporary protection, a coating system, or hot-dip zinc only after the site-water analysis, soil and exposure data, material compatibility, fabrication route, approved durability plan, and applicable standard are reviewed. IS 4736 alone does not select GI for acidic groundwater.
- Slotted Screen Configuration: If requesting slotted screen pipes, specify slot length, slot width, and spatial slot spacing from your aquifer grain-size or filter-pack report. The supplier should confirm achievable geometry and inspection records in the quotation.
- Documents and traceability: Name the inspection-document type, product markings, heat or lot identity, material results, dimensional and test records, and any BIS-licence evidence required by the project. The written offer must confirm which records apply to the proposed source and lot.
- Delivery and Logistics: State whether the quotation should be Ex-works Kanpur Bartan Bazar yard, or delivered directly to the drilling site in rural UP/Bundelkhand.
Worked sizing and weight calculation for transport planning
Theoretical casing mass is one input to transport and lifting planning. Check it alongside piece length, joint and accessory mass, packing, load distribution, vehicle payload, rig-hoist rating, lifting arrangement, applicable safety controls, and the approved installation plan. The formula for theoretical plain-end pipe mass per metre is:
Where OD is the outer diameter of the pipe in millimeters, and t is the wall thickness in millimeters. The site-wide 0.02466 constant converts these dimensions to nominal kilograms per metre.
The following is an illustrative theoretical-weight calculation for a 150 mm NB plain-end casing tube with 168.30 mm OD and 5.00 mm wall. Confirm that these dimensions match the ordered IS 4270 item before using the result for transport planning:
- Step 1: Identify Outer Diameter (OD) = 168.30 mm
- Step 2: Identify Wall Thickness (t) = 5.00 mm
- Step 3: Calculate (OD - t) = 168.30 - 5.00 = 163.30 mm
- Step 4: Multiply by thickness = 163.30 × 5.00 = 816.50
- Step 5: Multiply by the steel density constant = 816.50 × 0.02466 = 20.135 kg/m
- Step 6: Calculate standard 6-meter pipe length weight = 20.135 × 6.00 = 120.81 kg
If you are drilling a 400-foot well (approx 120 meters of casing string) and require 20 pipes of 150 mm NB Grade Fe 410 plain-end casing:
Total nominal casing string weight = 20 pieces × 120.81 kg = 2,416.20 kg (approx 2.42 MT). Confirm actual mass and the complete lifted assembly with the drilling engineer before selecting transport or hoisting equipment.
Common procurement mistakes & pipe failures in the field
Borewell installation exposes casing and connections to loads that a purchase-price comparison cannot evaluate. Review these failure modes against the approved casing design, bore record, installation method and receiving inspection rather than treating certification or price alone as proof of performance:
- Borehole Casing Collapse: External water and soil pressure, unsupported intervals, ovality, wall loss and installation loads can all contribute to buckling. Require the drilling engineer to check the complete casing design and verify the delivered dimensions and grade against the purchase order.
- Thread damage under installation load: The connection design must carry the approved suspended and installation loads. Specify the thread profile, machining tolerance, gauging, make-up procedure and end protection in the drawing or inspection plan; do not infer acceptance from a factory-process label or machine type.
- Weld-Seam Damage during Installation: Driving or mishandling can impose loads not represented by normal service pressure. Where the project requires a flattening, hydrostatic or other acceptance test, identify it in the inspection plan and review the corresponding record before installation.
- Sand ingress from uncontrolled slots: An unverified slot width or damaged screen can admit formation material when it does not match the bore log, gravel pack, and approved screen design. That can accelerate pump wear, but this page does not assign a failure time. Specify the screen type, slot geometry, open-area basis, tolerances, and inspection method on the drawing and RFQ.
Borewell technical standards & testing compliance
In India, steel tubes used for water wells are specified under Bureau of Indian Standards IS 4270. The reference summary below was checked on 3 September 2026; confirm the current edition, amendments, grade, and project acceptance plan in the purchase order.
| Grade | Tensile Strength (Min) | Yield Stress (Min) | Elongation % (Min) |
|---|---|---|---|
| Grade Fe 410 | 410 MPa | 235 MPa | 15% |
| Grade Fe 450 | 450 MPa | 275 MPa | 13% |
Test method, sampling frequency and dimensional tolerance must be taken from the ordered IS 4270 edition and the proposed mill's approved inspection plan. Ask the supplier to identify the applicable hydrostatic, flattening and dimensional checks and match the supplied results to the heat or lot before accepting the material. A test record confirms the recorded sample or tube; it is not a guarantee against installation or service failure.
Key Highlights of Borewell Procurement
- Where a BIS-certified route is required, verify the applicable standard mark, licence scope, manufacturer identity, and records against the offered lot; do not assume every casing line carries an ISI mark.
- Use the project engineer's casing calculation to select grade, wall and joint design for the stated loads.
- Copy the approved joint and thread geometry, coupling, make-up, load basis, and inspection checks from the well design and applicable standard.
- Request weighbridge slips on the basis agreed in the order when actual mass verification is required.
- State the required inspection document and traceability level in the purchase order.
Primary Sources & References
- 1. Bureau of Indian Standards (BIS): Product Manual for IS 4270 steel tubes for water wells.
- 2. Bureau of Indian Standards (BIS): IS 4736 standard record; confirm the current amended requirement for the ordered coating scope.
How to place an order
- Send us your Bill of Quantities (BOQ) with exact specifications, sizes, and destination pin code.
- Require the written response to identify any technical exception or missing design input before commercial comparison.
- Approve the quotation and issue a Purchase Order (PO).
- Record the accepted dispatch basis, collection or delivery terms and shipment evidence in the purchase order.
Trust signals
Common borewell size references
| Size | OD (mm) | Type | Standard |
|---|---|---|---|
| 100 mm NB | 114.3 | ERW Casing | IS 4270 |
| 125 mm NB | 141.3 | ERW Casing | IS 4270 |
| 150 mm NB | 168.3 | ERW Casing | IS 4270 |
| 200 mm NB | 219.1 | ERW Casing | IS 4270 |