The UKs top award winning company in the fields of composite tanks and environmental protection. All Camplas tanks are designed by a means of biaxial design envelope as laid down in BS 4994 —1987 using two or three complimentary helical winding angles providing maximum strength in all directions. This accommodates all the expected loadings and takes into account pressure, vacuum, aging, fatigue and external forces such as wind and ground pressure. The design programme has evolved from our 50+years of tank manufacturing and the practical application of the design criteria laid down in BS 4994.'