Rigid Coupling

Diameter: 1 “-12” (DN25-DN200)

Surface: Epoxy/Painted/Galvanized/Dacromet

Approvals: UL/FM/CE/ISO

Material Ductile lron
Standard ASTM A536 Gr.65—45—12 EN1563.JIS G5502
Physical property Tensile strength>=310Mpa,Elongation>=10% Hardness<=150HB
Testing pressure 10Mpa
Working pressure 2.5Mpa
Surface Epoxy/Painted/galvanised/dacromet
Color Orange,red, blue, Silver gray
Model Ductile iron grooved pipe fittings (Rigid coupling,45°elbows,grooved pipe fitting 90°elbows,reducing tee,grooved cross,flange coupling,cap ect.)
Connection Female, welding, flange
Shape Equal, reducing
Certificate FM,UL ,CCCF,,ISO9001, etc
Application Suitable for pipe connect of steam, air, gas, oil and so on
Buyer’s drawings or designs are available
Package Cartons with plywood pallet
Or as buyer’s requirements
Delivery details According to the quantities and specifications of each order
Normal delivery time is from 30 to 45 days after receiving the deposit



  1. Groove depth D is reference size,grooved diameter C is the control size.
  2. Because it often appears bell bottom in the processing groove, you should pay special attention to measurement, neither too small or too large of the grooved diameter,that will lead to the tube’s taking off or leakage/
  3. Please take the grooved packaging size on the as the standard.
  4. The sizes of our products may change because if technical reason without prior notice,please contact our technique department if you have any question.
  5. We can make some special size product according to customers’ requirement.