Apparatus and method of arresting ductile fracture propagation
Apparatus for reinforcing a duct
Bent pipe having sectional form of high strength
Bevel pipe winding method and product
Boring casing for boring machines
Centrifugally molded concrete composite pipe
Circumferential-weld reinforcing device
Clip-on stirrup mat
Clock spring crack arrestor
Coated metal pipe having bending capability
Collapsible flexible pipe
Composite pipe
Composite pipe structure having improved containment and...
Composite plastic pipe with netted steel wire skeleton and...
Composite tubular member with axial fibers adjacent the side wal
Concrete piles, poles or the like
Concrete pipe reinforcement spacer bar
Concrete pipes
Concrete pipes and methods for the manufacture thereof
Corrugated pipe