PIPE CLAMPS - SHEARING FORCES / MATERIAL
SHEARING FORCES DIAGRAM
The design of Pipe Clamps, and the choice of Standard or Heavy Duty Pipe Clamps body material, vary according to the loading, the shearing forces and the torque so as to provide for rigid installation. Shearing forces diagram for various tube sizes are given below for Standard and Heavy Duty Pipe Clamps for polypropylene, polyamide and aluminum. These graphs may be used for guidance in selection of clamps.
STANDARD SERIES WITH TOP PLATE AND HEX. BOLTS
HEAVY SERIES
Pipe Clamps in bodies of polypropylene are suitable for temperatures upto 90 degrees C. For higher Temperatures and heavy ratings, Pipe Clamp bodies are made with polyamide. Where temperatures are in excess of 180 degrees C., these bodies are made from aluminium. Properties of the clamp body materials are given in the chart below :
| Clamp Body Material Properties | Polypropylene PP Density : 0.906 gm/cm3 | Polyamide - Nylon 66 Density : 1.12 - 15g/cm3 | Aluminum - LM 6 IS : 733-1983 Density : 2.65gm./cm3 |
| Mechanical Properties Tensile Yield Stress ASTM D 638 Flexural Modules ASTM D 790 | 370 Kg/Cm2 16,000 Kg/Cm2 | 750 Kg/Cm2 | 3,300 Kg/Cm2 Yield 3,100 Kg/Cm2 @ 12% Elongation |
| Izod Impact Strength ASTM 0 256 Hardness | 7.5 Kg.cm./cm. R70 | 4.5 Kg. cm./cm. R120 | |
| Thermal Properties Melting Point Vicat Softening Point Maxm. Temp. Resistance | 160°C 150°C -30°C to + 90°C | 20°C 210°C -40°C to + 180°C | to 400°C |
| Chemical Properties Weak Acids, Solvents Benzene, mineral oils Alchohol, other oils, sea water | cond. consistent cond. consistent consistent | cond. consistent cond. consistent consistent | |
| Suggested mfs Spec. | IPCL KOYLENE M3030 | GSFC GUJLCON M28RC | HINDALCO 6443 WP. |
