What to Know Before You Order
YSC-P-9 Cast Iron Pipe 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
- Ask for the ESD version explicitly if the cell is grounded. A standard painted joint sitting in an otherwise dissipative workstation interrupts the path at the most inconvenient place.
- Joint halves are tightened to clamp, not to pin. The structure holds because friction between the coating and the casting exceeds the load trying to rotate the tube — which makes bolt torque a structural specification, not a preference.
- 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.
- 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.
- Surface finish is a corrosion decision. Zinc plating covers general workshop conditions; chromed or electrophoresed finishes are for visible frames and light washdown; stainless is for humidity, washdown and coastal freight.
Frequently Asked Questions
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.
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.
Do you supply an ESD version?
Yes. The dissipative version is specified where the workstation is grounded, and it needs to be ordered explicitly rather than assumed — mixing standard and dissipative joints in one frame breaks the path.
