Summa N.K. cutting plan drawing by utilizing expert craftsmen and state-of-the-art machinery to fabricate work within acceptable tolerance limits. Cylinder and conical sections shall be inspected on completion and their roundness checked to the tolerances laid down in the drawing and specification. Diameters and lengths shall also be within Specification, including flange diameters and hole pitches. During production, non-destructive test are carried out and supervised by inspection authority concerned to ensure that the process requirements and component meet the necessary stipulations of the design and contract specification.

Summa N.K. check edge preparation after machining, whole diameters, and check for removal of burns, chips, etc., from inside of the pipe. Check thickness at different sections. Gas cut edges should be ground for removal of slag and scales. The maximum permissible difference in internal diameter and out of alignment at the bore shall be checked for compliance within limits as per agreed code of design.

Summa N.K. has been handling the prefabrication and on-site installation of storage tanks and silos using from carbon steel up to special stainless steel. We also provide designing and fabrication service under the API650 and other equivalent standards to our customers and all pressure vessels are shipped to our customers fully assembled and pressure tested.

Summa N.K. design drawing of steel structure according to the clients’ requirements. All edges and surfaces to be welded shall be smooth, uniform, and free from slag, burrs, cracks, tears, scales, moisture, grease and other foreign materials. Rotary wire brushing, sand / shot blasting techniques can be permitted. Use of flame heating to remove hard scales on areas where web to flange joints are to be made is permitted. Roughness exceeding these limits shall be machined or ground.

The edges of the plates are cut with automatic power driven oxy-acetylene profile cutter. Trial cut on sample plate for the edge profile shall be carried out to ensure the correct bevels obtained are as per approved drawings and specification. The Quality Control Inspector shall check the edge profile by the use of an angle measuring device. During production, non-destructive test are carried out and supervised by inspection authority concerned to ensure that the process requirements and component meet the necessary stipulations of the design and contract specification.