Steel Pipes & Tubes

ERW pipe covers many water, structural, scaffolding, fabrication and utility requirements. GI pipe adds a hot-dip zinc coating where the approved specification needs galvanized steel. Seamless pipe serves pressure, process and machining requirements where a welded route is unsuitable. Boiler tubes, alloy pipes, CDW tubes, and hydraulic precision tubes each answer narrower technical descriptions.

Pipe and tube are not interchangeable purchasing words. Pipe is commonly ordered by NB or NPS and wall class or schedule, while precision and boiler tubes are commonly controlled by OD, wall, length, tolerance, surface and delivery condition. A hydraulic-cylinder shop and a PWD water contractor can ask for the same outside size while needing entirely different products.

This catalogue is for industrial procurement teams, contractors, PWD and JJM tender bidders, sugar mills, borewell contractors, fire-system installers, hydraulic shops, printing-cylinder shops, and fabricators. A retail plumbing repair, an engineer seeking a design calculation, or a buyer without an approved material description should first obtain the correct project specification. RP Sales can quote a defined requirement but does not replace the responsible design authority.

• Use ERW pipe for specified welded utility, water and fabrication duties.
• Use GI pipe when the project names a galvanized steel tube and coating standard.
• Use seamless pipe for the engineer-selected pressure, process, or machining route.
• Use boiler tubes for heat-transfer surfaces and applicable IBR documentation.
• Use CDW tubes or precision tubes when a component drawing controls tolerances and finish.

Use the table to route an enquiry, not to approve a substitution. An ASTM A106 pipe and an SA192 boiler tube, for example, can both be seamless carbon steel products, yet their purchasing dimensions and intended duties differ. An IS 1239 GI pipe also needs its zinc-coating requirement, while the same NB in black ERW does not.

When several products form one piping package, keep pipe, fittings, flanges, valves, gaskets and fasteners as separate lines. Name the matching material standard for each. A blanket phrase such as all items same grade can hide a wrong specification, because product standards use different grade designations and tests.

Local buyers should compare collection with delivered freight. State the vehicle-access point, unloading equipment, working hours, and whether long lengths can turn inside your site. A stockyard pickup still needs a bundle tally, document handover, and safe loading plan. A delivered quotation needs the destination PIN code and named consignee.

City orders for Lucknow, Agra, Prayagraj, Varanasi, Gorakhpur, Jhansi, Bareilly and Patna should split quantities by destination. You may need separate MTC sets, invoices, e-way bills, or bundle tags when one PO serves several sites. Put those requirements into the enquiry so the quotation includes the real dispatch work.

Use our Kanpur steel market guide for local orientation. You can also review steel pipes in Kanpur, Unnao supply, Lucknow supply, Agra supply, and Prayagraj supply. Each city page gives the matching enquiry and delivery context.

Our price-list pages give indicative bands for comparable product families. Review the MS pipe price list, GI pipe price list, seamless pipe price list, and precision tube price list. Firm rates still depend on the exact specification, quantity, mill source, documents, freight and quotation conditions.

Keep NB, NPS and OD distinct. Pair NB with class for IS 1239 pipe, and pair NPS with schedule for dimensional pipe series. Use actual OD, ID and wall for drawing-controlled tubes. If a BOQ mixes these systems, get engineering clarification before inviting bids. Do not ask us to guess which dimension has priority.

Treat certificates as defined deliverables. An MTC, dimensional report, coating record, TPI release, and an applicable IBR form answer different questions. The official form index distinguishes Form III-A for steam pipes, Form III-B for tubes, and Form III-C for boiler mountings and fittings. Name each required document and the line items it covers.

Preserve traceability through cutting and packing. A full length may carry a mill stencil that disappears once it becomes several pieces. State the approved marking-transfer method and identify pieces on the packing list. Separate mixed grades, heats, classes, surfaces, or project zones with durable bundle tags.

Compare commercial scope on one basis. Ex-warehouse Kanpur excludes destination freight, so a delivered offer should identify freight, unloading, transit responsibility, and consignee. Keep applicable taxes visible. Confirm the quantity unit, billing weight, quotation validity, exclusions and any inspection cost before issuing the PO.

• Do not approve a grade, class, schedule, or coating substitution verbally.
• Do not compare metres with MT until the weight and billing basis are stated.
• Do not schedule TPI after the material has passed the agreed hold point.
• Do not accept a bundle whose marking cannot be linked to its document set.
• Do not leave packing, unloading, or destination details for dispatch day.