125 mm (5 inch) Pipe Weight per Meter

What the 125 NB mass row identifies

The five-inch trade name points to 125 NB in this class table. The listed outside diameter is 139.7 mm for Light, Medium and Heavy.

Wall separates the three rows: 4.5 mm for Light, 4.8 mm for Medium, and 5.4 mm for Heavy. Their bores and masses therefore differ.

Listed weight is theoretical plain-end black-steel mass. Added sockets, prepared ends, zinc, packing steel, and mill variation change the vehicle scale reading.

This row does not specify a pressure rating. The engineer still needs material properties and a design code, alongside service conditions, corrosion allowance, joints and support loads.

Five-inch schedule pipe uses another OD on the site schedule chart. Compare the 100 NB and 150 NB class rows before consolidating larger project sizes.

Water-well casing has a separate standard despite sharing the 125 NB description. The full weight chart remains the hub for this utility-tube series.

Who should specify 125 NB project tube

Use this entry when an approved document calls for 125 NB IS 1239 in water, gas, air or permitted steam service. The application name alone cannot select Light, Medium, or Heavy.

Kanpur PWD and JJM contractors may meet 125 NB in project distribution or pump-house schedules. They should attach the BOQ line because the programme name supplies no wall decision.

The site fire guide places industrial sprinkler mains within an 80 to 150 mm range. A 125 NB steel line belongs there only when the hydraulic design and fire-NOC drawings select it.

Borewell contractors must order casing against IS 4270 and the approved well design. Replacing that requirement with this utility-tube row changes the product and wall system, as well as the joint and marking.

Hydraulic and printing-cylinder shops should move to controlled-bore tube specifications. Sugar mills may use 125 NB for a named water or air utility; boiler pressure parts stay on their approved material schedule.

125 NB mass classes with Kanpur bands

The dimensional values come from the generated five-inch row. Commercial ranges come from the MS pipe price list dated 24 May 2026 and remain indicative.

Whole-length groupings below one theoretical tonne stop at 11 Light, 10 Medium, or 9 Heavy pieces. Use those counts for a check, not as a mill packing specification.

RFQ fields that separate tube from casing

A line reading only 125 NB MS pipe leaves several distinct products open. Tie dimensions and standard to the required finish and evidence.

• State 125 NB, five inch, and 139.7 mm OD for the IS 1239 item.
• Choose Light 4.5 mm, Medium 4.8 mm, or Heavy 5.4 mm from the approved schedule.
• Name IS 1239 Part 1 and its contract edition; identify IS 4270 separately for any casing line.
• Copy the required material designation and service description from the engineering document.
• Select black or IS 4736 galvanised finish, including the 360 g/m² minimum average zinc requirement.
• Enter 6 m, another approved cut length, and the precise end preparation.
• Show pieces, aggregate metres, and theoretical MT so each commercial unit can be reconciled.
• Ask for MTC 3.1, heat or lot mapping, BIS licence details, and the applicable test certificate.
• Write the nominated SGS, TUV, Lloyds, or Bureau Veritas hold points only when TPI forms part of the ITP.
• Define packing and lifting protection. Then state ex-warehouse Kanpur, GST 18% extra and the destination PIN, followed by freight and unloading scope.

Attach the relevant project sheet on the request-for-quotation route. RP Sales responds to RFQs within 4 working hours, according to the buying guide.

Worked 125 NB Medium order near ten tonnes

For Medium class, the registry records 139.7 mm OD, 4.8 mm wall and 15.97 kg/m. The companion 6 m value is 95.8 kg after the registry’s stated rounding method.

A 100-length Medium requirement therefore weighs 100 × 95.8 = 9,580 kg, equal to 9.580 MT of theoretical plain-end black tube.

Five Medium lengths create a 479.0 kg handling group, inside the 200-500 kg stocked-bundle reference in the local steel market guide. Twenty heat-tagged groups reconcile the 100-length requirement.

That same 100-length lot contributes 9.580 MT before packing, above the site’s 9 MT vehicle-planning marker and below its 16 MT marker. The carrier still selects the vehicle from actual load and axle data.

A 3-6% GI planning addition moves the 100-length figure to 9,867.4 kg through 10,154.8 kg. This range estimates coating mass and does not replace certified dispatch weight.

The dated Medium MS range values 9,580 kg at ₹488,580 to ₹546,060. Pairing the GI mass endpoints with ₹62-70 per kg yields about ₹611,779 to ₹710,836.

For a supplier pricing each 6 m length, divide its pre-tax line value by 95.8 kg before comparing it with a ₹/kg offer. The dated endpoints put one theoretical Medium black stick at ₹4,885.80 to ₹5,460.60 before freight and GST.

Add GST at the 18% budgeting basis and price freight from the delivery PIN. Keep inspection and unloading charges visible rather than burying them in the steel rate.

Receipt controls for 139.7 mm project pipe

A common error substitutes five-inch schedule pipe at 141.3 mm OD for this 139.7 mm IS class row. Measure OD and read the standard stencil before unloading.

Water-well casing can arrive with the same nominal-bore label. Its IS 4270 marking and duty description must remain on another PO and challan item, along with its wall and connection.

One 125 NB Light stick is 90.0 kg, which lies inside the Medium individual range of 86.22 kg to 105.38 kg. Weight alone therefore cannot prove the delivered class.

The 100-length Medium example totals 9.580 MT, below the 10-tonne load threshold. Applying the batch tolerance to that order would use the wrong Clause 9.1 category.

Large-diameter ends can ovalise or dent under poor fork placement. Check OD at more than one axis, inspect the bevel or thread, and record handling damage before fabrication.

A GI consignment needs coating identity beside the base-tube heat. Do not reconcile a coated weighbridge slip solely against the 95.8 kg black-stick figure.

The BIS product manual puts a batch number on each tube at this bore. If fabrication cuts a 6 m piece, map both offcuts to the original heat or lot before paint, blasting, or machining removes the visible stencil.

Tolerance and test records at 125 NB

IS 1239 Part 1:2004 Clause 1.1 places 125 NB inside the standard’s 6 NB to 150 NB scope. Covered services include water, non-hazardous gas and air, plus steam.

Under Clause 9.1, an individual Light tube may vary +10% and -8% from theoretical mass. A single Medium or Heavy tube carries a ±10% allowance.

The load rule changes at a minimum weighment of 10 tonnes. Medium and Heavy then use ±7.5%, while Light uses +7.5% and -5%.

At 125 NB Medium, 105 listed sticks total 105 × 95.8 = 10,059 kg. Clause 9.1 supplies the tighter load band when the consignment qualifies at 10 tonnes or more.

Clause 9.1 also permits welded Light wall to fall 8% below nominal and welded Medium or Heavy wall to fall 10%. Positive thickness has no stated cap in that rule.

The BIS September 2023 certificate wording calls for a 5 MPa hydrostatic test, or eddy-current testing as the alternative. A site test covers the installed assembly under its own procedure.

The BIS galvanising guidance gives tubes up to 6 mm wall a 360 g/m² minimum zinc mass under IS 4736 Clause 5.1. Each 125 NB class here stays within that thickness scope.

The CPWD Part V pump-house support table puts 125 NB at the top of its 2.50 m spacing row and adds supports at bends and heavy fittings. This project provision does not turn class mass into a universal support design.

Buying 125 NB pipe from Kanpur

RP Sales uses the Bartan Bazar stockyard in Basanti Nagar, Kanpur 208014, as the stated origin. Ex-warehouse comparison keeps material value separate from destination carriage.

Panki is about 12 km from the yard. A PWD, pump-house, or fire-system pickup there still needs lifting access, safe supports, and a receiving contact for the heavier five-inch pieces.

Dispatch runs each day from Kanpur across Uttar Pradesh, Bihar, Madhya Pradesh, Delhi NCR, and Uttarakhand. Send the required arrival date without treating that coverage as reserved stock.

The Kanpur MS ERW supplier page covers the tube family, while borewell pipe in Kanpur keeps IS 4270 casing separate. The steel market page identifies the yard context.

For eastern UP, pair the BOQ with steel pipe delivery to Prayagraj or Varanasi. Freight should follow the chosen PIN and complete class-by-class mass schedule.

JJM and PWD bidders should name tender inspection points. Fire installers should include hydraulic drawings, and sugar-mill buyers should separate ordinary utilities from regulated steam lines.

Key points

• 125 NB IS 1239 tube has 139.7 mm OD in the generated class table.
• Medium class combines 4.8 mm wall, 15.97 kg/m, and 95.8 kg per 6 m.
• One hundred Medium lengths equal 9.580 MT before zinc or packing mass.
• Medium black steel carries a ₹51-57 per kg band dated 24 May 2026.
• Five-inch schedule pipe and IS 4270 casing remain separate purchase items.

Sources

• IS 1239 (Part 1):2004, Clauses 1.1 and 9.1. Scope plus the individual and wall limits, with minimum-ten-tonne load tolerances applied at 125 NB (Bureau of Indian Standards)
• IS 1239 : Part 1 : 2004, reaffirmed 2019. Official BIS preview of covered services and nominal-bore limits for steel tubes (Bureau of Indian Standards e-sale)
• PM/1239 (Part 1)/5, September 2023. Certification manual covering tube identity, batch marking, and the 5 MPa hydrostatic or eddy-current route (Bureau of Indian Standards)
• IS 4736:1986, Clause 5.1, Amendment 3 (2002). Applicable amended zinc provision with a 360 g/m² minimum average coating mass (Bureau of Indian Standards)
• IS 4270:2001 consumer guide. Steel Tubes Used for Water Wells: specification overview for the separate casing family (Bureau of Indian Standards)
• CPWD General Specifications for Electrical Works Part V, 2020, pump-house support-spacing table. Pump-house support-spacing row covering 32 NB through 125 NB and its extra-support instruction (Central Public Works Department, Government of India)

Related resources

• All nominal-bore weights
• 100 NB weight page
• 150 NB weight page
• Kanpur water-well casing
• PWD tender buying guide