News
Tailor-Made Couplings Get A Grip On Steel/GRP Connections
Posted on 01st Mar 2007
An order secured in Vietnam by Viking Johnson has demonstrated the company's ability to tailor its pipe joint products to unusual circumstances.
The company is supplying couplings specially designed to accommodate exceptional variations in pipe outside diameters for the Song Da water supply project, which includes many connections between locally manufactured steel and GRP pipe.
The additional tolerance is necessary because the GRP pipes are manufactured by winding the resin-impregnated glass fibres on a tapered mandrel. This produces variations in the OD (nominally up to 1.8m) depending on the final wall thickness and the degree of taper at the point where the connection is made.
Unusually, the parameters of the Song Da pipes were well beyond the capabilities of even Viking Johnson's Large Diameter Maxifit range, which is suitable for ODs from 350 to 600mm with a tolerance of up to 17mm.
