Marmon/Keystone LLC

Wholesale Metals and MineralsPennsylvania, United States501-1000 Employees

For more than 100 years, 𝗠𝗮𝗿𝗺𝗼𝗻/𝗞𝗲𝘆𝘀𝘁𝗼𝗻𝗲 has been the trusted supply chain partner for manufacturers across 𝗡𝗼𝗿𝘁𝗵 𝗔𝗺𝗲𝗿𝗶𝗰𝗮. Whether you are a long-standing customer who depends on our consistent, high-volume deliveries or a forward-thinking company seeking a more reliable source for tubular and bar products, we deliver the scale, stability, and expertise you need to keep your operations running strong.

𝗪𝗲 𝗺𝗮𝗶𝗻𝘁𝗮𝗶𝗻 𝗼𝗻𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗹𝗮𝗿𝗴𝗲𝘀𝘁 𝗶𝗻𝘃𝗲𝗻𝘁𝗼𝗿𝗶𝗲𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗶𝗻𝗱𝘂𝘀𝘁𝗿𝘆 — more than 𝟵,𝟱𝟬𝟬 items and over 400 product specifications of 𝗰𝗮𝗿𝗯𝗼𝗻, 𝗮𝗹𝗹𝗼𝘆, 𝘀𝘁𝗮𝗶𝗻𝗹𝗲𝘀𝘀 𝘀𝘁𝗲𝗲𝗹, and 𝗮𝗹𝘂𝗺𝗶𝗻𝘂𝗺 tube, pipe, and bar — always in stock and ready to ship. Our strategically located distribution centers and deep relationships across the continent ensure you receive exactly what you need, when you need it, without the risk of shortages or costly delays.

Beyond raw material supply, 𝗠𝗮𝗿𝗺𝗼𝗻/𝗞𝗲𝘆𝘀𝘁𝗼𝗻𝗲 offers a full suite of value-added services designed to eliminate your production bottlenecks:

▪️Precision cutting, tube laser cutting, and machining to exact specifications
▪️Custom fabrication, welding, coating, and assembly
▪️Dedicated customer-specific inventory allocation and kitting programs

These capabilities allow you to reduce on-site storage, lower carrying costs, and receive materials ready for immediate use — whether your orders are large and steady or high-velocity and frequent.

With 𝟮𝟳+ 𝗱𝗶𝘀𝘁𝗿𝗶𝗯𝘂𝘁𝗶𝗼𝗻/𝘀𝗲𝗿𝘃𝗶𝗰𝗲 𝗰𝗲𝗻𝘁𝗲𝗿𝘀 spanning the 𝗨𝗻𝗶𝘁𝗲𝗱 𝗦𝘁𝗮𝘁𝗲𝘀, 𝗖𝗮𝗻𝗮𝗱𝗮, and 𝗠𝗲𝘅𝗶𝗰𝗼, and more than 𝟮.𝟭 𝗺𝗶𝗹𝗹𝗶𝗼𝗻 𝘀𝗾𝘂𝗮𝗿𝗲 𝗳𝗲𝗲𝘁 𝗼𝗳 𝘄𝗮𝗿𝗲𝗵𝗼𝘂𝘀𝗲 𝘀𝗽𝗮𝗰𝗲, we combine national scale with local, personalized support. As a proud member of the 𝗠𝗮𝗿𝗺𝗼𝗻 | 𝗕𝗲𝗿𝗸𝘀𝗵𝗶𝗿𝗲 𝗛𝗮𝘁𝗵𝗮𝘄𝗮𝘆 family we bring the financial strength, resources, and long-term commitment that only a world-class organization can provide.

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