Technical specifications
Malleable iron threaded fittings — standards, ratings and threads.
The published technical data for the TUPY fitting ranges ABMT Group supplies across the Middle East and the Gulf: the standards each range is manufactured to, working pressures against temperature, thread forms, corrosion protection and the media the fittings are intended for.
The ranges
Four ranges, four sets of paperwork.
BSP and NPT are different products, not the same fitting with a different thread cut. They are manufactured to different standards, rated differently and specified for different markets.
| Range | Fittings manufactured to | Threads | Sizes |
|---|---|---|---|
| BSP | ABNT NBR 6943 · ISO 49 · EN 10242 | ABNT NBR NM ISO 7-1 (sealing) ABNT NBR 8133 · ISO 228 (parallel) |
¼″ – 6″ |
| NPT — medium pressure Class 150 |
ABNT NBR 6925 · ASME B16.3 B16.14 bushings and plugs · B16.39 unions |
ASME B1.20.1 · ABNT NBR 12912 | ¼″ – 6″ |
| NPT — high pressure Class 300 |
ASME B16.3, Class 300 | ASME B1.20.1 | On request |
| TUPYPRES press system |
Press-fit carbon steel system with elastomeric seal — no thread, no flame | — | On request |
BSP
BSP fittings to ABNT NBR 6943.
The range specified across the Gulf, Türkiye and the wider Middle East, where pipework is built to British Standard Pipe threads. Manufactured in black malleable iron and hot-dip galvanized.
| Temperature | kgf/cm² | bar | psi |
|---|---|---|---|
| up to 120 °C | 25 | 24.5 | 360 |
| up to 300 °C | 20 | 19.6 | 290 |
| Hydrostatic test, ambient | 100 | 98.1 | 1,420 |
- MaterialBlack malleable cast iron to ABNT NBR 6590 and ISO 5922.
- Corrosion protectionHot-dip galvanized in a zinc bath to ABNT NBR 6323 — uniform coverage inside and out, including the threads.
- PipeIntended for pipe to ABNT NBR 5580.
- Thread alignmentMaximum deviation 0.5°.
- MediaWater, gas, steam, oil and general hydraulic service.
NPT — medium pressure
NPT Class 150 to ASME B16.3.
The American thread form, specified on oil and gas, marine and process work. Rated by temperature under ASME B16.3, with unions rated separately under ASME B16.39.
| Temperature | psi | bar |
|---|---|---|
| −29 °C to 66 °C | 300 | 20.7 |
| 93 °C | 265 | 18.3 |
| 121 °C | 225 | 15.5 |
| 149 °C | 185 | 12.8 |
| 177 °C | 150 | 10.3 |
| 204 °C unions | 110 | 7.6 |
| 232 °C unions | 75 | 5.2 |
The 204 °C and 232 °C rows are the union ratings under ASME B16.39. Fittings to ASME B16.3 are rated to 177 °C.
- MaterialMalleable cast iron to ABNT NBR 6590 and ASTM A197/A197M.
- FinishHot-dip galvanized to ASTM A153, or black with a non-toxic oil finish.
- Thread alignmentMaximum deviation 0.5°.
- MediaLiquids, gases and vapours.
- High pressureA Class 300 range to ASME B16.3 is available where the service demands it.
Applications
What the fittings are specified for.
Approvals
The certificates specifiers ask for.
The lines carry UL Listing, FM Approval and DVGW certification, and the manufacturer holds ISO 9001, ISO 14001 and ISO 45001 certified by Bureau Veritas, alongside ABNT and INMETRO.
Figures on this page are the manufacturer's published technical data for the ranges we supply. Approvals are held by the manufacturer for the applicable product lines and sizes. Certificates and declarations of conformity are issued with each shipment. Confirm the rating for your exact size, class and service against the current datasheet before specifying — we will send it on request.
Datasheets
Need the drawing, the weight or the certificate?
Dimensional drawings, weights per piece, packing details and mill certificates come from the factory. Tell us the range, the sizes and the application and we will send what your specification needs.