Shell & Tube Type Method : Expanding & Welded No. Of Passes : From Single Pass up to Eight Pass Fabrication Capacity : Min. Dia. 100mm , Max. Dia 2000mm , Max Shell Length – 12 Mtr. Follows Design Code : ASME Sec. VIII & Section IX. Surface finish Internal & External : Buffing up to 300 Grit. Finishing : External Surface Painting, Send Blasting & Painting.