The differences are probably due to the lower modulus of the LDPE matrix of the WFRP and to, a lesser extent, the screw thread
In the latter application, resistance to compressive loads at the screw/cement interface and resistance to the shear and tensile loads generated by the screw threads
during weightbearing are essential properties.
Acme screw threads are manufactured for assemblies that require the carrying of heavy loads.
Acme screw threads were designed to replace the Square thread, which is difficult to manufacture.
Thread milling has been an established method of manufacturing accurate screw threads for many years.
Anyone dealing with fasteners and screw threads
will benefit, no matter what the industry branch.
After working closely with customers to identify issues posed by connector models with traditional stab plates, GE s UK-based subsea engineering team went back to the drawing board, re-designing the technology and removing the screw threads
in their entirety which is an industry first.