Pulp & Paper fasteners & bolting.
Stainless and alloy bolting for digesters, refiners, paper machine dryers and mill piping.
A mill runs hot, wet and corrosive, and its bolting comes out at every shutdown: dryer head bolts, manhole studs, refiner plate bolts, digester and blow valve flange studs. We manufacture them to your drawings and specifications in stainless, duplex and alloy steels, with hot-shot turnaround for outage work.
See where the bolts go.
Paper Machine
Manhole cover and header flange studs and nuts, plus dryer head bolts, journal bolts, dryer bearing housing bolts, steam joint and siphon flange bolts, press roll bearing housing bolts, loading arm pins and bolts, doctor holder bolts, coupling bolts, frame splice and cross-tie bolts and sole plate and anchor bolts.
Pulp Digester and Disc Refiner
Capping valve, nozzle flange, liquor heater channel, blow valve flange, blow valve bonnet, casing split and feed and discharge flange studs and nuts, plus strainer plate bolts, support lug bolts and nuts, refiner plate segment bolts, door swing bolts, nuts and pins, bearing cap bolts, hold-down bolts, coupling bolts and nuts and anchor bolts and nuts.
Grades pulp & paper runs on.
316 Stainless Steel (UNS S31600)
The marine and chemical-plant stainless: 2 to 3 percent molybdenum for pitting and crevice resistance in chlorides, with the same strength tables as 304.
ASTM A276 bar · ASTM F593 bolts304 Stainless Steel (UNS S30400)
The general-purpose 18-8 stainless: 75 ksi annealed bar, cold-worked bolts to 160 ksi, non-magnetic, and resistant to water, food and most mild chemicals.
ASTM A1082 bolting · ASTM A276 / A479 bar · ASTM A182 F51 / F60Duplex 2205 Stainless (UNS S31803 / S32205)
Twice the yield strength of 316 with far better chloride stress-corrosion resistance — the standard duplex for offshore, seawater and sour-service bolting.
ASTM A193 / ASME SA-193ASTM A193 Grade B7
The workhorse alloy-steel bolting grade for flanges, valves and pressure equipment — 125 ksi tensile, quenched and tempered 4140.
ASTM A193 / ASME SA-193ASTM A193 Grade B8M Class 1 (316 Stainless)
316 stainless bolting with molybdenum for chloride and pitting resistance — offshore, marine, chemical and coastal plant fasteners.
Jobs we’ve made in these grades.
