Profile: PNP Group supplies bellows, expansion joints, flanges, piping, tubing and valves for the petrochemical, pulp & paper, and energy industries. Our products are made from materials including carbon steel, stainless steel, special alloys, and titanium. Our products undergo rigid tests including testing of chemical & mechanical properties, metallographic, hardness, impact, ultrasonic, hydrostatic, liquid-penetrant and X-ray. We conform to ISO9001, ISO9002 and ISO14000 standards.