The Southern Pine Inspection Bureau is the leader in providing quality assurance standards to the softwood lumber industry. Since 1915, SPIB has maintained all grading rules for Southern Pine which are the standards for the entire Southern Pine industry. Our services include Lumber Audits (Visually and Mechanically Graded Lumber, Glued Lumber, HT & Export Services), Treated Wood Inspections, Laboratory Analyses, Training (including E-Learning), Wood Packaging and Pellet Inspections, and Special Services (including Certificate Inspections and Production Surveys). Treated Wood Quality Audit Prog (less)