American Block Manufacturing Company is a worldwide leader in the design and manufacturing of oilfield and marine equipment. Based in Houston, Texas since 1979, American Block has been providing these industries with high quality products.

American Block manufactures a full line of high quality Hammer Unions.  American Block provides Unions ranging from 1" to 12" and can handle pressures up to 15000 psi CWP (cold working pressure). Available with line pipe, butt-weld, or socket weld connections, our unions are interchangable with other name brand manufacturers that adhere to industry standards. To ensure customer satisfaction, American Block Unions come with full trace-ability and are manufactured from the highest quality raw materials.  All of American Block flow line products are type approved by Det Norske Veritas.  In addition, they meet API 6A and API 16C requirements, as well as NACE-MR-01-75 (sour gas service).