Metal joint sets – steel couplings with screw and nut for the pipe system
Steel tube connectors in sets with fastening hardware
Metal joint sets are packs of steel joints for the pipe modular system supplied together with the required screw, nut and, in some sets, a plastic clamp. The basic set HJ-1 weighs 0.15 kg; set HJ-108 with two joints and two screws weighs 0.21 kg. The same steel couplings can also be bought individually in the metal joints category; the sets belong to the pipe modular system.
What does a metal joint set contain?
A metal joint set contains everything for one bolted connection. Metal joint – set HJ-1 includes 2 joints MJ-2101, 1 screw WB-0625 and 1 nut NU-0600. Set HJ-25 combines joints MJ-2125 and MJ-2225 with the plastic clamp PJ-140A, and set HJ-13D_BK contains 2 joints H-13D. The connection is tightened with a screw, so the structure can later be dismantled and rebuilt; spare screws and nuts are available among fasteners.
Black, zinc-plated or nickel-plated steel couplings?
The steel couplings in the sets are made in three surface finishes:
- BK – black powder-coated surface, chrome-free,
- SV – white zinc-plated surface containing chrome, also suitable for ESD,
- NI – nickel-plated surface, chrome-free, also suitable for ESD.
Most sets are available in all three finishes; some (e.g. HJ-25, HJ-30) only in black and silver, and HJ-13D_BK only in black.
| Set type | Set contents | Weight | Finish |
|---|---|---|---|
| Basic set HJ-1 | 2× joint MJ-2101, screw WB-0625, nut NU-0600 | 0.15 kg | BK, SV, NI |
| Set with 2 screws HJ-108 | 2× joint MJ-21108, 2× screw, 2× nut | 0.21 kg | BK, SV, NI |
| Set with clamp HJ-25 | joints MJ-2125 and MJ-2225, clamp PJ-140A, screw, nut | – | BK, SV |
| Set H-13D (HJ-13D_BK) | 2× joint H-13D, screw, nut | 0.15 kg | BK |
| Other joint shapes, e.g. set HJ-2 | joints matching the connection shape plus fasteners | – | BK, SV, NI; some BK, SV |
Not sure which joints your structure needs? Send us a photo or sketch of the structure with dimensions and load capacity; we will prepare the design and a 3D visualisation free of charge, including a list of the joints. Contact Enprag.
Frequently asked questions
What do Enprag metal joint sets contain?
Enprag metal joint sets contain both the joints and the fastening hardware – for example, set HJ-1 has 2 joints MJ-2101, screw WB-0625 and nut NU-0600 and weighs 0.15 kg. You can assemble the connection without buying screws separately.
What is the difference between the BK, SV and NI finishes?
Enprag BK joints have a black chrome-free powder coating, SV a white zinc-plated surface containing chrome and NI a chrome-free nickel-plated surface. Of the 3 finishes, SV and NI are also suitable for ESD.
Can metal joint sets be used for ESD workstations?
Yes, Enprag sets in the NI (ESD nickel) and SV versions are suitable for ESD. Every ESD structure from Enprag is supplied with a report from a certified measurement.
What tools do I need to assemble metal joints?
Enprag metal joints can be assembled by your maintenance staff with basic hand tools – an Allen key, a hammer and a screwdriver. Assembly training is free for customers, and pipes are supplied in 4 m lengths or cut to size.
