1949 State Pipe & Supply was founded in Montebello, CA
1974
State Pipe & Supply acquires an office in the Pacific Northwest with full service 5 acre yard with cutting, threading and grooving capabilities. 
1980
Establishing its headquarters to a new location in Santa Fe Springs, CA, State Pipe & Supply’s new location sites on 10.5 acres of land with the same full capabilities as a Pacific Northwest branch.
1990 SeAH Steel Corp. purchases State Pipe & Supply.
1996
State Pipe & Supply expands its growth in water transmission pipes by purchasing West Coast Pipe Linings in Rialto, CA.
2001
Kent and Vancouver operations are consolidated in Vancouver, WA. The storage yard expands to 8.2-acres with a 20,000 square foot warehouse.
2003
Sales office opens in Rialto, CA on 24 acres of land with sawing and grooving capabilities. State Pipe & Supply opens new sales office in Northern California in the same year.
2010
State Pipe & Supply headquarters moves into new building and warehouse with full capabilities in Rialto, CA. State Pipe & Supply also opens a new branch in Canada within the same year.
2017
State Pipe & Supply opens its new spiral pipe mill, West Coast Spiral Pipe to manufacture water transmission pipelines, pilings, casings and structural pipes. Location is adjacent to West Coast Pipe Linings.
