Material:Grey iron,Ductile iron Order:OEM according customers'drawings Castings:sand casting The Roughneck Coupling is an effective and reliable way of joining plain-end or beveled end pipe. The Roughneck Coupling is ideal for use in a variety of applications including mining, process piping, manifold piping and oilfield services.
Material:Grey iron,Ductile iron Order:OEM according customers'drawings Castings:sand casting The Coupling with EG Gasket uses the specially designed “End Guard” gasket for use with “EG” grooved pipe. The “EG” gasket has a center rib which extends between the pipes in order to provide pipe end protection, which makes it ideally suited for internally lined or coated pipe applications.
Material:Grey iron,Ductile iron Order:OEM according customers'drawings Castings:sand casting Cast iron threaded fittings are available in both black and galvanized.
1. Sand Preparation System Sand Formula: Quartz sand (AFS 50-60) 85% + bentonite 8% + coal dust 5% + water 2%. Mixing time: 4-6 minutes. Compactness: 85-90 units. - Sand Reclamation: Vibratory screening + magnetic separation + baking (750°C) achieves ≥90% sand reuse rate. New sand replenishment ≤5%.
Material:Grey iron,Ductile iron Order:OEM according customers'drawings Castings:sand casting Fittings have sufficient sweep to allow free, unobstructed flow. They are made with a shoulder that is the same diameter as the inside diameter of the pipe. Therefore, when the pipe is threaded onto the shoulder, a continuous passage is created, leaving no place for solid matter to collect and clog the pipe.
Casting traces its origins to humanity’s earliest metalworking civilizations. In China, bronze casting during the Shang and Zhou dynasties reached astonishing heights—the creation of the Simuwu Ding required collaboration among hundreds of artisans using sectional mold assembly, its precision still awe-inspiring today. By the Warring States period, iron casting technology led the world, with iron tools and weapons driving leaps in productivity. Simultaneously, copper statue casting in ancient Egypt and Mesopotamia, alongside Europe’s medieval church bells, cemented casting’s role as a cornerstone of human civilization. The Industrial Revolution injected new momentum into casting technology. The demand for Watt steam engine cylinders spurred cupola furnace development, while 20th-century automotive industry growth transformed sand casting from cottage workshops to mechanized standardization. Today, casting remains indispensable in aerospace, energy equipment, and smart vehicle manufacturing.
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