About Drill Pipes
Steel drill and borewell casing options for groundwater work. Specify diameter, wall, connection, depth, formation, loads, corrosion conditions and inspection from the drilling design.
Use this page as a product and specification reference. The quotation must state the exact material grade, dimensions, manufacturer, certification or document scope, inspection, quantity, price, current availability, freight, and proposed delivery timing for the specific RFQ.
Specification reference
| Outer Diameter (OD) | 4" (100mm) to 14" (350mm) |
|---|---|
| Wall Thickness (WT) | Select from the drilling design; quote feasibility for the specified OD, connection and material |
| Grades | IS 4270, Fe 410, Fe 450 |
| Lengths | Typically 3m or 6m for easy rig handling |
| Threading | V-thread (Standard) or Square/Trapezoidal thread |
Confirm the exact grade, dimensions, tolerance, test certificate, and current availability for your requirement before ordering.
Common applications
These are enquiry contexts, not universal approvals. The project design and governing specification must approve the exact product, grade, dimensions, and service conditions.
- Agriculture: Deep tube wells for farm irrigation.
- Municipal Water: Drinking water extraction and town supply.
- Mining & Exploration: Core drilling and geological surveys.
- Construction: Piling and foundation stabilization.
Potential source references
The quotation must identify the proposed manufacturer, current availability, inspection documents, and delivery basis for the specific RFQ.
- Jindal Pipes
- Utkarsh India
- Surya Roshni
- Prakash Industries
Applicable standards and specifications
Drill pipe, casing pipe, and screen are different items
A borewell package may contain plain casing, threaded casing, flush-joint casing, and slotted intake lengths. The casing supports the bore and provides the path for the submersible pump. A slotted section admits water at the aquifer zone. A drill string transfers rotation and drilling load, so its connection and duty differ from permanent water-well casing.
IS 4270 is the product reference already used on this catalogue for steel tubes used in water wells. IS 1239 pipe belongs to a broader conveyance family and should not be treated as an automatic substitute. The purchase description must follow the drilling plan, pump envelope, strata information, and approved project specification.
A flush joint has no projecting coupling collar, which helps when the annular space is restricted. A coupled joint gives the driller a separate connection component to inspect and replace. Neither label settles wall, grade, thread fit, or collapse suitability. Those fields still belong on the PO and MTC.
Suitable buyers and unsuitable duties
Borewell contractors, irrigation installers, municipal water contractors, and JJM tender bidders use this product family for water-well casing and pump installations. Mining and exploration teams may also buy casing for investigation work, while civil contractors use heavy tubular products for piling or foundation support only when the drawing permits that route.
Do not choose a casing from pump discharge pressure alone. External ground and water loading, lowering load, joint capacity, corrosion exposure, and bore geometry also affect the engineering decision. A fabricator should not turn ordinary structural tube into certified water-well casing merely by cutting threads on it.
This page is not a drilling-depth chart. The quotation should identify the proposed product against the RFQ, while the drilling consultant or project engineer remains responsible for well design. Send the bore log, casing schedule, pump dimensions, and any tender clauses with the enquiry when those documents control selection.
How Kanpur borewell contractors specify the casing
Start the RFQ with IS 4270 or the project standard, followed by OD, wall thickness, grade, and casing type. State whether each length is plain, slotted, V-threaded, square or trapezoidal threaded, flush joint, or supplied with couplings. Use one dimension system throughout the BOQ so inch labels and millimetre dimensions cannot drift apart.
Add the required length, piece count, total metres or MT, and permissible cutting plan. The catalogue lists 3 m and 6 m as typical rig-handling lengths. If the string mixes plain and slotted sections, show each as a separate line item. Marking and packing should preserve that distinction after unloading.
Request the mill test certificate, heat or batch traceability, dimensional inspection, and hydrostatic test evidence required by the PO. State whether a buyer-nominated TPI must inspect threads, couplings, slots, and markings before dispatch. IBR Form III-C is for boiler mountings and fittings, not ordinary water-well casing.
- Standard and grade: write IS 4270 and the required Fe grade exactly as the approved schedule states.
- Dimensions: give OD, wall, cut length, plain or slotted quantity, and pump-clearance requirement.
- Ends: define thread form, flush-joint geometry, coupling supply, and thread protection.
- Documents: list MTC 3.1, dimensional records, hydrostatic evidence, TPI scope, and packing list.
- Commercial basis: request ex-warehouse Kanpur price, applicable taxes, freight, and delivery PIN code as separate fields.
Casing selection table for a Kanpur RFQ
The table separates commercial descriptions that may be combined in one enquiry. It is a comparison aid, not a well-design approval. The driller should map every row to its installed position before the purchase team compares rates.
| Item | OD range | Wall range | Length | RFQ decision |
|---|---|---|---|---|
| Plain casing | 4-14 in | 4-10 mm | 3 or 6 m | Confirm standard, grade, wall, ends, and lowering sequence |
| Threaded casing | 4-14 in | 4-10 mm | 3 or 6 m | Name thread form, coupling, gauge check, and thread protector |
| Flush-joint casing | 4-14 in | 4-10 mm | 3 or 6 m | Provide approved joint drawing and drift-clearance requirement |
| Slotted casing | 4-14 in | 4-10 mm | 3 or 6 m | State slot pattern and position from the well schedule |
Final dimensions, tolerances, test scope, and suitability remain subject to the PO, approved drawing, and inspection documents.
Worked weight example for borewell casing
Theoretical weight helps a buyer compare a quoted bundle with the BOQ before dispatch. For casing with 168.3 mm OD and 5.4 mm wall, calculate weight = (168.3 - 5.4) x 5.4 x 0.02466 = 21.69 kg/m.
Using the displayed 21.69 kg/m value, a 6 m length has a theoretical base mass of 130.14 kg before any coupling, slotting, coating, or permitted manufacturing variation. Multiply the ordered metres by 21.69 kg/m for the BOQ estimate, then compare the dispatch documents and actual supply against the applicable standard tolerance.
Keep the calculated value separate from a weighbridge value. The calculation is useful for quantity planning and quote comparison, while the accepted invoicing basis belongs in the commercial offer. Couplings and other added components need their own weight line if the quotation charges them separately.
Incoming inspection and common procurement failures
In practice, mixed wall descriptions cause more trouble than a visible dent. Compare the PO, invoice, bundle tag, pipe marking, and MTC before lowering begins. Measure OD and wall on sampled lengths, inspect straightness and ovality, and check that slotted and plain pieces match the lowering schedule.
Run a thread protector back only when the inspection plan allows it. Look for damaged crests, incomplete threads, burrs, rust inside couplings, and mismatched joint forms. A connection that starts under force should be quarantined rather than corrected during lowering. Record photographs and heat or batch references before the string enters the bore.
Hydrostatic evidence also needs a document match. Put the required IS 4270 edition, applicable test method and acceptance record in the PO rather than copying a pressure and duration from an unchecked catalogue summary or accepting a verbal statement after dispatch.
Transit inspection should cover end protection, bundle separation, and restraint. Rejecting a damaged length at receipt is easier than proving when thread or slot damage occurred after unloading. Keep the signed challan, photographs, MTC, and dimensional report together for the site file.
Dispatch from Kanpur across the UP and North India belt
For a Kanpur enquiry, the commercial comparison should show material basis, applicable taxes, freight to the delivery PIN code, unloading responsibility, and any inspection hold point as separate fields. This lets a JJM or PWD bidder compare landed offers without hiding freight inside the material rate or assuming local stock.
Common regional enquiries may name Kanpur Dehat, Unnao, Lucknow, Agra, Prayagraj, Varanasi, Gorakhpur, Jhansi, Bareilly, or Patna. Treat those place names as RFQ context only; require the offer to confirm whether the destination can be served, the proposed vehicle and delivery timing.
Kanpur-area buyers in Panki, Dada Nagar, Jajmau, Chakeri, and Fazalganj can use the local market page to frame pickup or freight discussions. Borewell contractors should send the complete casing schedule through the RFQ route so plain, slotted, and jointed lengths remain separate quotation lines.
Key points for the purchase file
- Treat casing, drill pipe, screen, and couplings as separate BOQ items.
- Write standard, OD, wall, grade, length, joint form, and slot requirement on the PO.
- Check pipe marking, MTC, dimensions, and threads before any length enters the bore.
- Use theoretical weight for comparison and the agreed commercial basis for invoicing.
- Compare ex-warehouse Kanpur material, GST, freight, unloading, and inspection on separate lines.
What to include in the RFQ
- Specify the relevant standard or grade where known.
- Provide OD or NB, wall thickness or schedule, required length, and quantity.
- State the delivery city or PIN code and any unloading constraints.
- List MTC, IBR, TPI, marking, inspection, or other documentation requirements.