Borewell pipe selection depends on the bore design, casing function, soil and groundwater conditions, diameter, wall thickness, depth, jointing method, and whether plain or slotted sections are required. The drilling or engineering specification should define the final product requirement before purchase. Kanpur quotations should state ex-warehouse terms and show GST at the legally applicable GST rate stated on the current quotation separately.
What borewell pipe means for Kanpur procurement
Borewell pipe is a trade description covering several products around a drilled water well. Steel casing holds the bore open. Slotted or screen sections admit water where the approved design places them. A pump column carries discharge inside the casing. These functions need separate BOQ lines because their materials, joints and dimensions can differ.
IS 4270 is the steel-tube reference used on this site for water-well casing. It is not a general label for every drill string, pump column or uPVC screen. The drilling contractor or consultant should decide the casing material and section schedule from the bore design, site conditions and equipment layout.
For buyers in Kanpur, Kanpur Dehat, Unnao and the wider UP belt, the first commercial step is still technical clarification. Ask for the bore log or approved section schedule before comparing rates. A supplier can price the described casing, but should not invent the well design from a pump name or requested depth alone.
Who should use steel casing and who should not
Steel casing suits borewell contractors, institutional groundwater projects, PWD or JJM packages and industrial users whose approved design calls for steel. The pipe must carry the stated OD, wall, joint, length and plain or slotted designation. The casing choice also needs enough clearance for couplings and lowering equipment.
Do not use steel casing as a substitute for the pump column unless the approved design specifies that product. Do not order slotted pipe for the complete bore merely because water entry is required. The screen location and slot geometry must follow the approved section plan, while plain casing protects the other intervals.
A hydraulic shop, fire-system installer or structural fabricator needs a different product standard even if the diameter appears similar. Likewise, a uPVC borewell design should stay within its named standard and class. Procurement should not convert between steel and plastic from rate alone because handling, joints and installed function change.
Start with the bore design
State the bore diameter, casing or screen function, planned depth, section lengths and site conditions. A generic "borewell pipe" description is not enough to determine the correct dimensions or section type.
Turn the bore section into a material schedule
Break the planned string into plain casing, screen or slotted sections, blank sections and any separate pump-column requirement. Show the length of each zone and identify the drawing revision. If the design changes after drilling, issue a revised schedule rather than correcting quantities through an informal phone message.
State nominal size and actual OD because coupling clearance is a physical fitment issue. Add wall thickness, piece length, joint type and any coating. For slotted pipe, copy the approved slot width, pattern, open-area requirement and location. The supplier should quote exactly that schedule without choosing the hydrogeology.
Calculate total pieces from the scheduled metres and stated piece length, then add only the approved allowance. Keep spare plain and slotted pieces on separate lines. This helps the site team identify what can replace a damaged length without moving a screen into the wrong interval.
Separate plain casing from slotted or screen sections
Plain and slotted sections perform different functions in a bore. If slots or perforations are required, specify their pattern, dimensions, open-area requirement and placement from the approved bore design rather than assuming a standard configuration.
Define dimensions and joints
- OD or nominal size and wall thickness or product class.
- Required length per piece and total quantity.
- Threaded, coupled, welded, plain-end, or other joint requirement.
- Coating, galvanizing, marking, or corrosion-protection requirement where applicable.
How to specify an IS 4270 casing RFQ
Write IS 4270 beside every steel casing line controlled by that standard. Add nominal size, OD in millimetres, wall thickness, duty or class language from the approved document, and required length. State whether the product is plain casing, slotted casing or another defined section. Avoid a single mixed line called borewell pipe.
For joints, name threaded and coupled, flush joint, bevel end or plain end exactly as required. Give coupling quantity and outside clearance where fitment matters. Add thread protection, end caps, marking and bundle separation. If the lowering plan depends on a particular joint profile, attach the drawing or gauge requirement to the RFQ.
Close the enquiry with quantity in pieces and metres, MTC requirement, hydrostatic test record if called for, TPI witness points and delivery schedule. Give the site PIN code, access limits and unloading responsibility. State ex-warehouse Kanpur or delivered basis so freight is not hidden inside a different material description.
- Bore drawing revision, section function and governing standard.
- Nominal size, OD, wall, piece length and total scheduled metres.
- Plain or slotted designation with approved slot details.
- Joint profile, couplings, clearance and thread protection.
- MTC, test record, inspection, marking and packing.
- PO quantity, delivery stages, consignee and freight basis.
Worked weight check for a casing order
The Kanpur borewell size table lists 100 NB casing at 114.3 mm OD, and the same page shows a 4 mm wall within its listed range. Weight = (OD - t) x t x 0.02466 kg/m gives (114.3 - 4) x 4 x 0.02466 = 10.88 kg/m. One 6 m plain steel length is about 65.3 kg before couplings or coating.
Use this result as an estimate for logistics and quotation review. It does not select a safe wall for the bore and does not replace the mill certificate or actual dispatch weight. The drilling engineer remains responsible for the casing design, while procurement confirms that the offered description matches it.
For a staged site order, multiply scheduled plain and slotted metres separately, then keep couplings as their own count. This prevents a buyer from accepting the right total tonnage with the wrong section mix. The PO should also state whether billing uses theoretical or actual weight.
Inspect threads, slots and identity before lowering
Inspect casing before it reaches the rig. Match bundle tags and heat numbers with the MTC. Sample OD, wall and length. Check that couplings run onto clean threads without visible cross-threading, cracked ends or severe handling marks. Keep protectors fitted until the joint is ready for make-up.
For slotted material, compare section length, slot pattern and marked identity with the approved schedule. Look for blocked openings, distorted pipe and burrs that could interfere with handling. Do not accept an unmarked mixed bundle of plain and slotted sections because the error may remain hidden until lowering.
The BIS product manual identifies hydrostatic testing under IS 4270 Clause 8. The PO should still name the applicable edition and required record from the controlling tender, and procurement should verify the clause against that project document before acceptance.
Common borewell procurement failures
The first failure is ordering by inches alone. Nominal descriptions can hide the actual pipe OD and the larger coupling OD. A casing body may enter the bore while the coupling binds. Put both dimensions on the enquiry when annular clearance is limited.
The second failure is buying one total length without a section schedule. Plain and slotted pipe then reaches site in the wrong ratio. Another problem is receiving loose couplings, damaged threads or unreadable markings after long road transport. Packing and identification belong in the PO, not in a complaint after unloading.
A final mistake is allowing urgency to choose the wall or slot pattern. Stock can solve timing, but it cannot approve the well design. If drilling results change the planned string, obtain a revised instruction from the responsible engineer and update the purchase line before dispatch.
Standards and records for water-well casing
Use IS 4270 when the approved requirement is for steel tubes used in water wells. Keep IS 12818 separate when the project uses uPVC screen or casing products. The standard code should travel from drawing to RFQ, quotation, PO, MTC review and receipt note without being shortened to heavy bore pipe.
The MTC should identify the supplied heat and ordered grade or material description. Pipe marking, bundle tags and dispatch documents should allow the receiver to connect the physical material with that certificate. If the tender asks for a BIS licence copy, TPI or witnessed testing, list the document before purchase.
This guide does not publish an IS 4270 edition because first-party pages in the current site disagree on the year. The buyer should copy the exact edition and clause from the controlling tender or consultant specification. That avoids converting a website inconsistency into a contractual statement.
Buying borewell pipe from Kanpur for UP sites
Ask for ex-warehouse Kanpur and delivered-site totals on the same technical schedule. GST at the legally applicable GST rate stated on the current quotation should be shown separately. Freight should use the stated pieces, estimated weight, destination and unloading plan. Long sections need packing that protects threads and keeps plain and slotted bundles identifiable.
Confirm dispatch timing, destination coverage, and material location on the written quotation; this page does not establish a service area or daily-dispatch capability. The matching Kanpur borewell page provides local procurement context, not a customer or delivery claim.
For outstation supply, put the exact delivery city and PIN code on the RFQ. The related links include Kanpur and Lucknow supplier pages, while the Kanpur steel market guide explains pickup and dispatch context. For every other destination, keep the bore schedule, access limits and commercial response together on the RFQ rather than implying that an unlisted city route is present.
Include site and delivery information
- Delivery city or PIN code and access constraints for the drilling site.
- Required delivery date and whether material is needed in stages.
- Any certificate, inspection, marking, or test-document requirement.
- Project or consultant specification where one controls the purchase.
Key points for the borewell purchase file
- Separate casing, screen and pump-column functions in the material schedule.
- Buy by OD, wall and joint detail, not an inch description alone.
- Copy slot geometry and placement from the approved bore design.
- Inspect threads, couplings, markings and section identity before lowering.
- Compare ex-warehouse Kanpur and delivered totals on the same schedule.