One place for the complete, standard-accurate reference set behind process piping — dimensions for pipe, elbows, bends, tees, caps, crosses, stub-ends, reducers and flanges, plus the hydraulic, mechanical and stress calculators that use them. We hold the data for all the world’s major piping standards — every size, free to use.
Verified dimension data and engineering calculators, cross-referenced and free to use
Detailing and analysing a piping system normally means juggling a shelf of separate standards — one for pipe, others for each fitting, more for flanges, all in different units and layouts. We have consolidated the dimensional data for pipe and every common fitting into structured, scaled-drawing databases, and paired them with the calculators that turn those dimensions into head loss, velocities, support spans, stresses and a closed hydraulic design. Look it up, draw it, compare across standards and size it — all in one place.
Scaled, dimensioned drawings and full tables for every component
Outside diameter, inside diameter and wall thickness for every standard and schedule/SDR — ASME B36.10M/B36.19M, EN 10220/10216/10217, JIS, GOST, API 5L/ISO 3183/DNV, thermoplastic and GRP. Cross-section & longitudinal drawings, full table.
Open Reference90° LR/SR, 45° and 180° elbows and bends — OD, wall, centre-line radius, centre-to-end, back-to-end, angle and bore, across ASME B16.9, EN 10253, JIS, DIN, GOST, BS, ISO, MSS, API and non-metallic.
Open ReferenceConcentric and eccentric reducers — large/small OD & ID, wall, centre-to-end length, taper angle and beta ratio, for ASME B16.9, EN 10253, MSS SP-75 and non-metallic PVC/PE/GRP.
Open ReferenceButtweld tees, reducing tees, crosses, end caps and stub-ends — run/branch OD, centre-to-end run (C) and branch (M), across ASME B16.9, EN 10253, JIS, DIN, GOST, BS, ISO, MSS SP-75 and AWWA C208.
Open ReferenceBolt-face and section drawings for every flange — OD, bolt-circle diameter, bolt pattern, raised face, thickness, hub and bore, with ASME↔EN↔JIS↔GOST class equivalency. ASME B16.5/B16.47, EN 1092-1, JIS B2220, GOST, AWWA C207, API 6A.
Open ReferenceThe flange dataset in depth — 2,669 records across 11 standards, 60+ pressure classes and 12 flange types, every stored dimension explained. The reference behind the flange drawings.
Explore the DatabaseTurn the dimensions into hydraulics, losses, spans and stresses
Friction loss, head loss, pressure drop and NPSH using Darcy–Weisbach and Colebrook–White for any pipe, flow and fluid.
Open CalculatorVelocity and volume flow with one or two reducers — continuity Q=A·v, reducer minor losses (Crane TP-410), Reynolds number and an API RP 14E erosional-velocity check.
Open CalculatorFlow and pressure loss through elbows and bends — Crane TP-410 K = n·fT, head loss, equivalent length and erosional-velocity check.
Open CalculatorRun-through and branch (dividing/combining) flow losses for tees and crosses, with K factors and head loss.
Open CalculatorMaximum support spans by size, material, schedule, contents and insulation — with deflection and bending-stress limits.
Open CalculatorDeflection and bending stress from a concentrated point load between supports — reactions, moment, stress and a live deflected-beam view.
Open CalculatorAllowable stress vs temperature for piping materials across all major codes (ASME B31.3, ASTM, EN, JIS, GOST, API) with side-by-side comparison.
Open ChartsThe first-principles reference — hydraulic sizing, hoop-stress wall thickness (ASME B31.3), materials, support spans, surge and code compliance.
Read the GuidePipe sizing, pump selection, NPSH, valves & fittings, surge/water-hammer and the pressure-drop budget — each with its own deep-dive.
Open HubWe hold them all — every major global piping code, by component category
Our database holds the dimensional data for all of the world’s major piping standards — American (ASME, API, ASTM, MSS, AWWA), European (EN), international (ISO), Japanese (JIS), Russian / CIS (GOST) and the legacy German (DIN) and British (BS) series. Whatever code your project is built to, it is almost certainly covered — and cross-referenced to its equivalents in the other systems.
| Standard | Region | Scope |
|---|---|---|
| ASME B36.10M | USA / International | Welded & seamless wrought-steel pipe (carbon/alloy), schedules |
| ASME B36.19M | USA / International | Stainless-steel pipe, schedules (S) |
| EN 10220 | Europe | Seamless & welded steel pipe — dimensions & masses |
| EN 10216 / EN 10217 | Europe | Seamless (10216) & welded (10217) pressure pipe |
| JIS G3454 / G3456 / G3459 | Japan | Carbon, high-temperature & stainless steel pipe |
| GOST 8732 / 8734 / 10704 | Russia / CIS | Seamless hot- & cold-formed and welded pipe |
| API 5L / ISO 3183 | International | Line pipe for oil & gas pipelines |
| DNV-OS-F101 | International | Submarine / offshore pipeline systems |
| ISO 4427 / EN 12201 | International | Polyethylene (PE) pressure pipe — SDR series |
| ISO 1452 / EN ISO 1452 | International | Unplasticised PVC (PVC-U) pressure pipe |
| GRP / FRP (BS / ISO 14692) | International | Glass-reinforced plastic pipe |
| Standard | Region | Scope |
|---|---|---|
| ASME B16.9 | USA / International | Factory-made buttweld fittings (LR/SR elbows, 45°, 180°) |
| ASME B16.28 | USA | Short-radius buttweld elbows & returns |
| EN 10253-1 / -2 | Europe | Buttweld fittings (non-alloy & alloy steel) |
| JIS B2311 / B2312 / B2313 | Japan | Steel buttweld fittings |
| DIN 2605 | Germany (legacy) | Steel buttweld elbows |
| GOST 17375 | Russia / CIS | Seamless buttweld elbows |
| BS 1640 | UK (legacy) | Steel buttweld pipe fittings |
| ISO 3419 | International | Non-alloy & alloy steel buttweld fittings |
| MSS SP-43 / SP-75 | USA | Stainless lightweight & high-test buttweld fittings |
| Non-metallic (PVC / PE / GRP) | International | Moulded & fabricated plastic elbows |
| Standard | Region | Scope |
|---|---|---|
| ASME B16.9 | USA / International | Tees, reducing tees, crosses, caps, stub-ends |
| EN 10253 | Europe | Buttweld tees, caps & reducers |
| JIS B2311 / B2312 | Japan | Steel buttweld tees & caps |
| DIN 2615 / DIN 2617 | Germany (legacy) | Tees (2615) & caps (2617) |
| GOST 17376 / 17378 / 17379 | Russia / CIS | Tees (17376), reducers (17378), caps (17379) |
| BS 1640 | UK (legacy) | Steel buttweld tees & caps |
| ISO 3419 | International | Buttweld tees, caps & crosses |
| MSS SP-75 | USA | High-test buttweld tees & fittings |
| AWWA C208 | USA | Fabricated steel waterworks fittings (large diameter) |
| Standard | Region | Scope |
|---|---|---|
| ASME B16.9 | USA / International | Concentric & eccentric buttweld reducers |
| EN 10253 | Europe | Buttweld reducers |
| MSS SP-75 | USA | High-test reducers |
| DIN 2616 | Germany (legacy) | Steel reducers |
| GOST 17378 | Russia / CIS | Seamless buttweld reducers |
| Non-metallic (PVC / PE / GRP) | International | Moulded & fabricated plastic reducers |
| Standard | Region | Scope |
|---|---|---|
| ASME B16.5 | USA / International | Pipe flanges NPS ½–24, Class 150–2500 |
| ASME B16.47 Series A (MSS SP-44) | USA / International | Large-diameter flanges NPS 26–60 (heavy) |
| ASME B16.47 Series B (API 605) | USA / International | Large-diameter flanges NPS 26–60 (compact) |
| EN 1092-1 | Europe | Steel flanges, PN6–PN100, all types |
| JIS B2220 | Japan | Steel pipe flanges, 5K–63K |
| GOST 12820 / 12821 / 12836 | Russia / CIS | Flat-welded, weld-neck & additional flange series |
| AWWA C207 | USA | Steel waterworks flanges (large diameter) |
| API 6A (Type 6B / 6BX) | International | Wellhead / high-pressure flanges (ring joint) |
| DIN 2631–2638 | Germany (legacy) | Legacy German flange series (cross-referenced) |
| Standard | Region | Scope |
|---|---|---|
| ASME B31.3 | USA / International | Process piping design (wall thickness, allowable stress) |
| ASME BPVC Section II-D | USA / International | Allowable stresses for materials vs temperature |
| ASTM (A106, A312, A53 …) | USA / International | Material specifications for pipe & fittings |
| EN 13480 / EN 10216-10217 | Europe | Metallic industrial piping & material properties |
| JIS / GOST / API material grades | Japan / CIS / Intl. | Regional material allowable-stress data |
Legacy German (DIN) and British (BS) series are retained for cross-referencing against their EN/ISO successors. Need a standard not listed? Ask us — the database is extended continuously.
Outside diameter, inside diameter, wall thickness (by schedule / SDR), nominal bore (DN & NPS), and mass per metre.
OD, wall, centre-line bend radius (LR/SR), centre-to-end, back-to-end, bend angle and bore.
Run & branch OD, centre-to-end run (C), centre-to-end branch (M), cap length and stub-end geometry.
Large & small OD and ID, wall thickness, centre-to-end length, taper angle and beta ratio.
OD, bolt-circle diameter, bolt count/size, raised-face diameter & height, thickness, hub, bore, RTJ groove, rating & mass.
Allowable stress vs temperature, density and modulus for the common pipe materials across all major codes.
Pull the exact dimensions of any pipe or fitting by standard, size and class — no shelf of code books, no transcription errors.
Check an EN component against its ASME, JIS or GOST equivalent — confirm bolt circles, bores and ratings before you commit.
Feed the dimensions into pressure-drop, loss, support and stress calculators without re-keying — consistent from lookup to result.
The same data drives our piping, P&ID and 3D-model work — and our engineers can verify any result or take on the full design.
Use the references and calculators free, or contact our engineers for a cross-standard compatibility check, a bulk data export, or complete hydraulic, mechanical and stress design of your piping system.
Our expertise spans multiple industries with sector-specific water treatment solutions.