As per BS EN and ISO standard
Sizes & Dia: Can manufacture any Size and Dia (as per requested drawing)
Grade: Flanges according to ASTM A182 Grade F304, F304L F316L
Coating: HDG, EGB633, Black, Xylon (PTFE) & Cadmium
Certification: EN 10204.3.1 (2004)
CHEMICAL REQUIREMENTS COMPOSITION
According to ASTM A182
Grade C Mn P S Si Ni Cr Mo
F304 0.08 2 0.045 0.03 1 8-11 18-20 –
F304L 0.03 2 0.045 0.03 1 8-13 18-20 –
F316L 0.03 2 0.045 0.03 1 10-15 16-18 2-3
Meanwhile it is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. They are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal. The key types are the welding neck, long welding neck, slip-on, socket weld, lap joint, threaded and blind. In addition to these standard flanges, some special ones exist, called Weldoflange/Nipoflange and Elboflange, swivel flange, expander/reducer flange, and orifice flanges.
Alloy materials (chrome-moly) have higher chrome and molybdenum content than carbon steel. Alloy steel materials suit high temperature and high-pressure applications and improved resistance to corrosion when compared to regular carbon steel grades.