Seamless pipes are in accordance with EEMUA–234, Section 1. They are manufactured from hot extruded shells followed by cold work and annealing.
Longitudinally welded pipes are in accordance with EEMUA–234, Section 2. They are manufactured from hot rolled or cold rolled and annealed sheet or plates in accordance with BS 2870, BS 2875, ASTM B171 or ASTM B402. Mechanical testing is carried out in accordance with the standards above. The pipes are supplied in “as welded” condition.
Dimensions are based on EEMUA –234, Tables 1.2.1-1.2.2 and 2.2.1-2.2.2. However, the pipe diameters range from ½ in./16 mm to 36 in./914 mm. Although the pipe dimensions of 38 in./965 mm and 40 in./1016 mm are not included in the EEMUA 234 – 1987 they are available on request as they are commonly specified. The corresponding wall thicknesses of the pipes comply with the pressure containment requirements of B31.3 as well as the requirements of the International Association of Classification Societies. Pipes with other wall thicknesses are available on request.