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- Offshore & Subsea HA Quad Assembilies OS+ - WLL Range 4.1 tonnes to 150 tonnes
The HA range of Grade 8 master links and quad assemblies are widely used for offshore rigging and lifting sets for containers and are the industry leaders globally based on the following:
- Product available in diameters from 16mm up to 90mm and working load limits from 4.1 tonnes to 150 tonnes.
- The links are manufactured from triple alloy steel in accordance with EN1677, which includes individually proof load tested to 2.5 times working load limit and 100% MPI.
- MPF (Manufacturing Proof Force): 2.5 x 9.81 x Working Load Limit (kN) (min.).
- BF (Break Force): WLL x Factor of Safety.
- WLL (Working Load Limit) (tonne) @ 45° to vertical.
- Factor of Safety: 5:1.
- Embossing: as per Description column and Batch Number.
- Design air temperature -40° min.
- Average impact energy (charpy) 42 Joules minimum impact resisitance at -40°C up to 50mm diameter.
- Operational temperature range is -40° C to + 200°C.
Dimensions & Specifications (DNV GL Type Approval TAS000013Z Rev. 3)
Description | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | WLL (t) | MPF (kN) | MBL (kN) | Weight (kg) |
HA16QA OS+ | 16 | 150 | 75 | 14.5 | 125 | 60 | 4.1 | 101 | 201 | 1.62 |
HA22QAS OS+ | 22 | 162 | 90 | 22 | 162 | 90 | 11 | 270 | 540 | 4.41 |
HA23QA OS+ | 22 | 270 | 140 | 22 | 162 | 90 | 7 | 172 | 343 | 5.22 |
HA25QA OS+ | 25.5 | 270 | 140 | 22 | 162 | 90 | 9.3 | 229 | 456 | 6.05 |
HA26QA OS+ | 28 | 270 | 140 | 22 | 162 | 90 | 14.5 | 356 | 711 | 6.73 |
HA32QA OS+ | 32 | 270 | 140 | 28 | 200 | 110 | 19 | 466 | 932 | 10.92 |
HA36QA OS+ | 36 | 270 | 140 | 28 | 200 | 110 | 26 | 638 | 1275 | 12.35 |
HA40QA OS+ | 40 | 280 | 155 | 32 | 270 | 140 | 30.5 | 749 | 1496 | 18.5 |
HA45QA OS+ | 45 | 320 | 175 | 36 | 270 | 140 | 40 | 981 | 1962 | 25.09 |
HA50QA OS+ | 50 | 350 | 195 | 45 | 320 | 175 | 51 | 1251 | 2502 | 40.89 |
HA65QA OS+ | 65 | 410 | 220 | 50 | 350 | 195 | 75 | 1840 | 3679 | 66.1 |
HA75QA OS+ | 75 | 450 | 250 | 65 | 410 | 220 | 100 | 2453 | 4905 | 115.02 |
HA90QA* | 90 | 510 | 300 | 70 | 400 | 200 | 150 | 3679 | 7358 | 164.1 |
* Batch approved

The HA range of Grade 8 master links and quad assemblies are widely used for offshore rigging and lifting sets for containers and are the industry leaders globally based on the following:
- Product available in diameters from 16mm up to 90mm and working load limits from 4.1 tonnes to 150 tonnes.
- The links are manufactured from triple alloy steel in accordance with EN1677, which includes individually proof load tested to 2.5 times working load limit and 100% MPI.
- MPF (Manufacturing Proof Force): 2.5 x 9.81 x Working Load Limit (kN) (min.).
- BF (Break Force): WLL x Factor of Safety.
- WLL (Working Load Limit) (tonne) @ 45° to vertical.
- Factor of Safety: 5:1.
- Embossing: as per Description column and Batch Number.
- Design air temperature -40° min.
- Average impact energy (charpy) 42 Joules minimum impact resisitance at -40°C up to 50mm diameter.
- Operational temperature range is -40° C to + 200°C.
Dimensions & Specifications (DNV GL Type Approval TAS000013Z Rev. 3)
Description | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | WLL (t) | MPF (kN) | MBL (kN) | Weight (kg) |
HA16QA OS+ | 16 | 150 | 75 | 14.5 | 125 | 60 | 4.1 | 101 | 201 | 1.62 |
HA22QAS OS+ | 22 | 162 | 90 | 22 | 162 | 90 | 11 | 270 | 540 | 4.41 |
HA23QA OS+ | 22 | 270 | 140 | 22 | 162 | 90 | 7 | 172 | 343 | 5.22 |
HA25QA OS+ | 25.5 | 270 | 140 | 22 | 162 | 90 | 9.3 | 229 | 456 | 6.05 |
HA26QA OS+ | 28 | 270 | 140 | 22 | 162 | 90 | 14.5 | 356 | 711 | 6.73 |
HA32QA OS+ | 32 | 270 | 140 | 28 | 200 | 110 | 19 | 466 | 932 | 10.92 |
HA36QA OS+ | 36 | 270 | 140 | 28 | 200 | 110 | 26 | 638 | 1275 | 12.35 |
HA40QA OS+ | 40 | 280 | 155 | 32 | 270 | 140 | 30.5 | 749 | 1496 | 18.5 |
HA45QA OS+ | 45 | 320 | 175 | 36 | 270 | 140 | 40 | 981 | 1962 | 25.09 |
HA50QA OS+ | 50 | 350 | 195 | 45 | 320 | 175 | 51 | 1251 | 2502 | 40.89 |
HA65QA OS+ | 65 | 410 | 220 | 50 | 350 | 195 | 75 | 1840 | 3679 | 66.1 |
HA75QA OS+ | 75 | 450 | 250 | 65 | 410 | 220 | 100 | 2453 | 4905 | 115.02 |
HA90QA* | 90 | 510 | 300 | 70 | 400 | 200 | 150 | 3679 | 7358 | 164.1 |
* Batch approved

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