Anvil International manufactures a full line of hammer unions with threaded or butt-weld connections. Catawissa hammer unions are interchangeable with most manufacturers and adhere to industry standards. Hammer unions are fully traceable and available with complete mill certifications.
Anvil also stocks all oilfield products in Scotchkote 134 or Corvel 1660. Anvil coated products are ISO Approved, Nace standards #1 (Corvel 1660), and have 100% traceability.