News & Technical Articles

May 19, 2026 • 22 min read

Complete welding fume extraction guide — source capture vs ambient air, CFM sizing (per ACGIH), OSHA/EU limits for Cr(VI) and manganese, portable extractors, fume arms, downdraft tables, and centralized cartridge systems…

May 17, 2026 • 22 min read

Complete baghouse dust collector guide — pulse-jet, reverse air, and shaker cleaning systems compared; filter fabrics (polyester, Nomex, PPS, P84, PTFE, fiberglass); air-to-cloth ratios; sizing for cement, woodworking, f…

May 12, 2026 • 21 min read

Complete dust, mist & fume collector guide — cartridge, baghouse, cyclone, oil mist & fume extractor types compared. CFM sizing, air-to-cloth ratio, applications (welding, woodworking, metalworking, pharma), and selectio…

May 11, 2026 • 18 min read

Complete shell and tube heat exchanger TEMA guide — front/shell/rear head types, BEM, AES, BEU, AEL, NEN configurations, fixed tubesheet vs floating head vs U-tube, and how to specify the right design for your process.

May 08, 2026 • 17 min read

Complete dowel bar procurement guide — 10 supplier evaluation criteria, documentation checklist, country-specific procurement notes for Africa & Middle East, and how to write a complete dowel bar PO.

May 07, 2026 • 18 min read

Complete dowel bar load transfer engineering guide — Friberg's analysis, LTE calculation, deflection ratios, bearing pressure, dowel diameter design, and pavement performance prediction.

May 05, 2026 • 17 min read

Complete dowel bar retrofit (DBR) guide — slot cutting, dowel placement, chairs, rapid-setting concrete, FHWA specifications, and when DBR makes economic sense vs full pavement replacement.

May 01, 2026 • 18 min read

Complete dowel bar installation guide — basket placement, DBI insertion, drilled-in methods, ACPA alignment tolerances, MIT-DOWEL-SCAN testing per ASTM E3013, and pre/post-pour quality control.

April 29, 2026 • 18 min read

Complete dowel basket guide — basket assembly types, components, sizes, anchoring methods, basket vs DBI comparison, and pre-pour quality control. Reference for highway and pavement contractors.