Open Access

Piping Material & Service Cost Estimator

Class 3 Estimate: Material + Service

Pipes | fittings | flanges | valves | bolts | gaskets | strainersFabrication | erection | supports | painting | insulation | PWHT

Ask Estimator

Try: | |
Show 12 more examples

Project Information

Add project details for report traceability.

Pipe Quick Estimate

Estimate pipe material cost using size, thickness, length, material basis, coating, and estimate factors.

Inputs

Suggested Raw Material Rate
Ch.Comp / Grade Family -
Indicative Raw Material -
Raw material price range -
Recommended Rs/kg -

Output

Coating factor
OD used -
Weight kg/m -
Total weight kg -
Raw steel Rs/kg -
Normal estimate

Median factor

Your realistic working number for negotiation and planning.

-

Finished Rs/kg
-
Rs/m
-
Total Rs
-
Conservative estimate

P90 factor

Your safety-margin number for budget approval.

-

Finished Rs/kg
-
Rs/m
-
Total Rs
-

Calculation Basis

Material standard
-
Size / wall
-
Coating
-

Price Build-up

Raw material
-
Normal factor
-
Finished rate
-

Budget Difference

Risk reserve
-
P90 uplift
-
P90 total
-

Component Quick Estimate

Estimate fittings, flanges, valves, stud-and-nut sets, gaskets, and strainers without uploading a BOM.

Inputs

Output

Component estimate Ready
Material Category-
Raw Rs/kg-
Factor Used-
Unit Rs-
Normal Total-
P90 Total-

Choose a component type to view its calculation basis.

Upload Excel BOM

Upload one or more piping BOMs to estimate material and supported direct service costs.

Need the BOM format?

Download the Excel template, complete the project and piping-component details, then upload it below.

Download Example BOM Template
Supported column names

Size / NPS / DN, Sch/Thck/Rating or Thickness, Quantity or Length, UoM, Coating, Material, Raw Steel Rs/kg, Estimate Factor Override. Schedule text like S-STD, STD, HVY, Heavy, SCH 40, S-80, and 5S is converted to mm.

No BOM uploaded yet.

Pipe Material Estimate Summary

Add pipe sizes manually or upload one or more BOM files to build a combined pipe material estimate.

0 lines
Action
No pipe lines added yet.
Total weight -
Normal estimate -
P90 estimate -

Pipe Material Category Review

Categories are detected from ASTM piping material specification data.
Non-CS estimates use the same factor-based method and are indicative only.

Line check: 0 / 0 0 categories
Show Pipe Material Category Review

Upload a BOM or add pipe lines to view category-wise tables.

Scenario Playground (Material What-if Analysis)

Compare pipe, piping component, or complete material estimate changes under selected commercial assumptions.
Direct service rates are not varied in this lab.

Budget risk review
Show Material What-if Lab

Selected Cases

Pipes and recognised non-pipe components are included. Coating scenarios affect pipe values only.

Adjustment 0%
Adjusted value -
Adjustment 0%
Adjusted value -
Adjustment 0%
Adjusted value -

Scenario Summary

Base estimate -
Lowest case -
Highest case -
Risk range -
Biggest cost driver -

Add pipe lines or enter one estimate to view what-if analysis.
No scenarios are available for the selected scope.

This Material What-if Lab varies raw material rate, pipe factor, component factor, and pipe coating. Manual sliders apply a separate +/-30% adjustment for rapid material-budget sensitivity review. Direct service rates remain unchanged.

Piping Component Cost Review

Part A - uploaded BOM items are grouped and budget-priced for Pipe, Fitting, Flange, Valves, Bolt,
Gasket, Trap/Strainer, and Other.

0 items
Show Piping Component Cost Review

Upload a BOM to view group-wise item tables.

Piping Service Cost Estimate

Part B - preliminary direct service cost for pipe, fitting and flange erection/welding, plus
valve weight-based service, from the uploaded BOM.

Direct service cost: Rs 0.00
Show Piping Service Cost Estimate
Planning Assumption 6 m stock + 1.60 allowance Pipe rows use the 6 m proxy; fittings use connection ends; each flange No. equals one joint. Valve service uses calculated valve weight.
Eligible service rows0
Need review0
Total erection Qty (IM)0.00 IM
Total welding Qty (ID)0.00 ID
Erection costRs 0.00
Welding costRs 0.00
Valve service costRs 0.00
Rework/modificationRs 0.000.00 ID (15.00%)
Pipe support costRs 0.000.000 MT @ Rs 1,50,000/MT
Civil cost for pipe supportRs 0.00300 mm above-ground, size-based cost per support
Pipe painting costRs 0.00Uninsulated CS/LTCS/AS: 65C default
Pipe insulation costRs 0.00Enter Design Temperature (100C to 500C)
PWHT cost (if applicable)Rs 0.00Matched against NRL PWHT rules
Direct service costRs 0.00

Upload a BOM to calculate pipe, fitting, flange and valve service cost.

This is a preliminary service estimate. Pipe insulation cost uses outside surface area = pi x OD (m) x length (m), multiplied by the provisional P50 insulation rate selected from the entered design temperature: 100C = Rs 4,578/m2, 200C = Rs 4,881/m2, 300C = Rs 5,082/m2, 400C = Rs 5,587/m2 and 500C = Rs 6,118/m2. Temperatures between approved points use linear interpolation; outside 100C to 500C remain Review. Pipe painting uses the same surface area for CS, LTCS and alloy-steel pipe: uninsulated piping uses Rs 1,010/m2 at the 65C default, while painting under insulation uses Rs 885/m2 from 65C to 200C and Rs 2,220/m2 from 300C to 500C. The 200C to 300C CUI rate is calculated by linear interpolation between Rs 885/m2 and Rs 2,220/m2. PWHT is calculated only when Piping Class / PMS Class, material and thickness match `nrl_pwht_rules`; it uses eligible welding inch-diameter and the applicable material-category rate. Pipe-support structural steel uses the parametric pipe support calculator and an all-inclusive adopted rate of Rs 1,50,000/MT, based on NRL LPP/WO references 4300080842, 4300083138, 4300083970 and 4300088266. The rate includes contractor-supplied structural steel, fabrication, welding, surface preparation, primer/painting, transportation, erection, bolting and alignment, measured on net fabricated weight. Civil cost for pipe support is separately added using the editable civil-support percentage of the pipe support structural cost. Approved IM and ID rate libraries are applied by detected material category to pipe, fitting and flange work. Rework/modification allowance uses the editable rework percentage of total eligible project welding ID and its matched welding cost. Valves use their calculated material-cost weight x BOM quantity x IOCL-ME-SOR rate: Rs 30.53/kg for valves other than RTJ and Rs 36.64/kg for RTJ valves. Unsupported rows stay marked Review. Actual weld quantities, site constraints, NDT scope, commissioning, taxes and commercial terms are excluded unless separately estimated.

Calculation Methodology & Audit Trail

One review reference for pricing basis, component methods, assumptions, and any user overrides.

Material + direct service basis
Show Calculation Methodology & Audit Trail

Pipe Weight & Rate

Pipe mass formula: W = 0.0246615 x (OD - t) x t.

  • W = pipe mass in kg/m.
  • OD = actual outside diameter in mm from the built-in OD table.
  • t = wall thickness in mm from direct entry or the selected schedule.
  • Total weight = W x length in meter.
  • Pipe Rs/m = finished Rs/kg x pipe kg/m.

Example - 6 IN CS pipe, 7.11 mm wall: W = 0.0246615 x (168.3 - 7.11) x 7.11 = 28.26 kg/m. For 100 m, total weight = 2,826.00 kg.

Material Rate, Factors & P90

  • Raw material Rs/kg is selected from the material library for the chosen year and material standard.
  • Finished pipe Rs/kg = raw material Rs/kg x pipe estimate factor.
  • Normal total is the working estimate; P90 is the higher budget envelope.
  • Overrides replace the relevant default only and are recorded below when used.

Example - 6 IN CS pipe, 2026: raw material Rs 56.50/kg x normal pipe factor 1.80 = finished rate Rs 101.70/kg. x 28.26 kg/m = Rs 2,874.41/m.

Fittings, Gaskets & Strainers

  • 90 degree LR elbows, NPS 2 to 48: developed length = 2.356 x actual OD; elbow weight = pipe kg/m x developed length. CS factors: 2 IN = 5.00; above 2 to 4 IN = 3.50; above 4 to 20 IN = 2.50; above 20 to 26 IN = 2.80; above 26 to 48 IN = 3.20.
  • 45 degree elbows: use 50% of the matching 90 degree elbow physical weight. Unit price = 65% of the 90 degree elbow price for NPS 2 to 6 IN, and 60% for NPS 8 to 48 IN.
  • Equal tees: developed length = 2C + M - 0.5 x OD; tee weight = pipe kg/m x developed length. PO-derived factors: NPS 2 to 4 IN = 4.41; NPS 6 to 20 IN = 3.86; NPS 24 to 48 IN = 3.55.
  • Reducing tees: use approved unequal-tee C/M dimensions and the same PO-derived Equal Tee factor for the run size. If dimensions cannot produce a price, the readable run-size Equal Tee price is used and labelled Equal tee fallback.
  • Other fittings, gaskets and strainers continue to use the matching-pipe basis and approved component factor. Normal total = unit Rs x BOM quantity; P90 uses the active P90-to-normal ratio.

Example - 6 IN CS 90 degree LR elbow, STD: pipe mass = 28.26 kg/m; developed length = 2.356 x 168.3 mm = 0.3965 m; elbow weight = 11.21 kg. 11.21 kg x Rs 56.50/kg x factor 2.50 = Rs 1,582.98 per No.

Flange Weight Model

  • Recognised WN, SO and Blind flanges use the flange-weight-3-input-model-v2 JSON model.
  • Flange weight is matched by flange type, pressure rating, and nominal size.
  • Unit Rs = flange weight x material Rs/kg x P50 base multiplier x material multiplier.
  • Where a type-specific lookup is unavailable, the app records the WN fallback used or requests review.

Example - 6 IN WN flange, 150#, CS: JSON weight 10.60 kg x raw material Rs 56.50/kg x WN multiplier 3.70 = Rs 2,215.93 per No.

Valve Pricing Method

  • Gate valves use the built-in size-band weight equations and conversion factors.
  • Other recognised valve types use the approved ratio relative to the gate-valve base for the same size and rating.
  • Pressure class and material multiplier are applied where available.
  • Rows without a usable size, rating, material, or factor remain marked Review.

Example - 6 IN gate valve, 150#, CS: weight basis = 2.00 x 6 squared = 72.00 kg. 72.00 x Rs 56.50/kg x conversion factor 3.70 = Rs 15,058.80 per No.

Stud Bolt & Nut Set Method

  • Readable metric designations such as M30 x 200 use one fully threaded stud plus two heavy-hex nuts.
  • Mass uses standard coarse pitch, effective thread diameter, heavy-hex nut dimensions, and 7,850 kg/m3 density.
  • Unit Rs = complete set mass x material Rs/kg x commercial factor 2.50.
  • Unreadable bolt rows retain the existing review or fallback route; washers, coating and packing are excluded.

Example - M30 x 200 stud set: stud plus two heavy-hex nuts = 1.66 kg/set. 1.66 kg x Rs 56.50/kg x commercial factor 2.50 = Rs 234.88 per set.

Material Classification & BOM Review

  • Materials are classified using astm_piping_material_specification_webapp.json and its Basic Material of Construction logic.
  • BOM items are grouped as Pipe, Fitting, Flange, Valve, Bolt, Gasket, Trap/Strainer, or Other.
  • Only recognised rows with sufficient data receive a calculated rate.
  • Rows marked Review need a confirmed rate, missing data, or a management decision before reliance on the group total.

Example - material detection: a 6 IN item with ASTM A106 Gr.B is classified as Carbon Steel; ASTM A335 Gr.P5 is classified as Low & Intermediate Alloy Steel.

Coating & Scope

  • Coating applies to pipe values only: Yes means internal epoxy lining, external PE coating, or both.
  • Coating Yes factor = 2.30 normal / 3.80 P90; Coating No factor = 1.80 normal / 2.70 P90.
  • Material category, raw rate, factor, P90, and component pricing are indicative cost-estimation inputs.
  • Validate SS, alloy, duplex, non-ferrous, and commercial rates with supplier quotations.

Example - 6 IN pipe coating: the same pipe uses factor 1.80 when non-coated and 2.30 when coated. Coating changes pipe values only; it does not change fitting or valve factors.

Pipe, Fitting & Flange Service Cost

  • Pipe, Fitting and Flange rows use approved CS, SS or AS service rates by detected material category. Unclassified rows use the CS rate as a visible fallback.
  • Pipe erection cost = NPS x pipe length in metres x approved Rs/IM rate. Fittings and flanges have no separate erection IM in this first release.
  • Each pipe row is one run: base joints = ceiling(length / 6 m), then base joints x 1.60, always rounded upward. Fittings use connection ends: Tee = 3, Cap/Weldolet = 1, other fittings = 2 per No.
  • Each flange No. equals one estimated joint. Welding cost = estimated joints x NPS x approved Rs/ID rate, matched by location, IBR status, size and thickness.
  • Unsupported rate combinations are marked Review and excluded from the direct service total.

Examples - 6 IN, 60 m pipe: erection IM = 6 x 60 = 360 IM. Base joints = ceiling(60 / 6) = 10; estimated joints = ceiling(10 x 1.60) = 16 joints; welding quantity = 16 x 6 = 96 ID. 6 IN elbow, Qty. 4: 2 ends x 4 = 8 joints. 6 IN flange, Qty. 4: 1 joint x 4 = 4 joints. No escalation or contingency is added.

This tool provides indicative Part A material and Part B direct-service estimates. Activities not explicitly included, testing, freight, taxes, packing, wastage, contractor margin, and commercial terms are excluded unless separately stated.