WHAT THE SPECIFICATION OF PRODUCT?
| Model# | YS-3 |
| Product name: | Black Steel Lean pipe connector |
| Connection | 4 Way Cross Joint Set |
| Material: | Hot rolled steel (SPHC) |
| Compatible pipe systems | Compatible with 28 mm pipes |
| Thickness: | 2.3 or 2.5mm(Full size) |
| surface treatment: | Black electrophoresis, blue zinc, nickel plated, chromeplate |
| Manufacturing technique | Stamping molding - grind deburring - Product electrophoresis - packaging |
| Metal clamp application: | Widely used forworkbench(fixed or mobile), workstations, turnover vehicles, rack, storage shelves, display stand and Lean lines, production lines, LCIA system, lean manufacturing line, trolley, storage, auto system |
| RoHS certification | Yes |
| Recyclable | Yes |
| None compatible pipe systems | Trilogiq (28.6 mm) |
| Frequency of use | Very high |
| Reusable | Yes |
| Reusable parts | All |
| Electric conductivity (ESD) | No |
| Steel hardness (HRB) | 68-75 HRB |
| Finish | Glossy |
| UV resistance | High |
| System operational temperature | -148°F to 572°F (-100°C to 300°C) |
| Steel treatment | Black cathodic electrodeposition (Ecoating) |
| Manufacturing technique | Stamping and deburring |
What to Know Before You Order
YS-1 Black Steel Tee Joint belongs to the family of cast and pressed fittings that hold a 28 mm tube frame together. Individually it is a small casting with one bolt; collectively these parts decide whether a workstation behaves as one rigid structure or as a set of tubes leaning against each other.
Points that decide whether it works
- Specified torque for an M6 bolt in this family is typically 8 to 10 Nm. Two fitters working by feel will differ by up to a factor of two, and the frame that holds its rating is the one assembled with a wrench rather than a hex key and good intentions.
- Mark each joint with a paint pen once torqued. A broken line means something moved, and it is visible from across the aisle without touching the frame.
- Retorque 24 to 48 hours after assembly. PE and ABS coatings creep under sustained clamping pressure, so a joint set correctly on Monday is measurably looser in three weeks. This is the single most skipped step in every installation.
- Where the frame will be rebuilt, check that the joint is rated for multiple assembly cycles. Clamping force that fades after the second build turns a modular system into a consumable one.
- Confirm the pipe you are joining: 28 mm OD is the standard, but wall thickness changes how much clamping travel the joint has. Thin-wall and thick-wall tube are not always interchangeable in the same fitting.
Frequently Asked Questions
Can it be reused after dismantling?
Mechanically yes, but clamping force depends on the coating recovering its thickness. After two or three assemblies the joint needs more torque to hold the same load, so treat reuse as a maintenance decision rather than a free option.
How much load can this joint carry?
The joint is rarely the first thing to fail — the tube span usually gives way first, by sagging rather than breaking. What limits a frame is joint stiffness under sideways load, which is why torque and retorquing matter more than the catalogue weight figure.
What torque should I use?
Typically 8 to 10 Nm for an M6 bolt in this family, then again after 24 to 48 hours once the coating has settled. Use a wrench, not feel; the difference between two fitters is larger than most people believe.
