OEMs & Fabricators fasteners & bolting.
Studs, nuts and bolting made to your drawings for valve, pump, exchanger and vessel builders.
Equipment builders need bolting that arrives to the drawing, on the build schedule, with the paperwork in order. We manufacture studs, nuts, cap screws and machined components to your drawings and specifications for valve, pump, heat exchanger and pressure vessel builders, from one piece to production quantities, with material certification to the heat.
See where the bolts go.
Shell & Tube Heat Exchanger
Channel cover, girth flange, shell cover and floating head studs and nuts, collar studs, nozzle bolting, tie rods, eye bolts and anchor bolts.
Gate Valve
Bonnet, yoke and end flange studs and nuts, plus gland eyebolts and nuts and handwheel nut.
Gas Turbine
Horizontal joint and fuel gas manifold flange studs and nuts, plus vertical flange bolts and nuts, exhaust frame and diffuser flange bolting, combustor casing and end cover studs, fuel nozzle cap screws, bearing housing cap screws, load coupling bolts and nuts, support and gib key bolts and foundation anchor bolts.
Hydroprocessing Reactor
Manway cover, inlet nozzle, outlet nozzle, quench nozzle, catalyst unloading nozzle and thermocouple nozzle studs and nuts, plus internals bolting and skirt anchor bolts and nuts.
Air-Cooled Heat Exchanger
Header plugs, cover plate and nozzle studs, fan, fan ring and drive bolting, structural bolts and anchor bolts.
Coke Drum
Bottom head and unheading valve, chute spool, top head and top valve, overhead vapour line, feed inlet flange and relief, steam and small nozzle studs and nuts, plus valve body and bonnet bolting and skirt anchor bolts and nuts.
Grades oems & fabricators runs on.
ASTM 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 B16
Vanadium-strengthened Cr-Mo bolting that holds its strength where B7 starts to relax — steam turbines, HP steam flanges and hot valve bonnets.
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.
ASTM A320 / ASME SA-320ASTM A320 Grade L7
The low-temperature twin of B7 — same 4140 Cr-Mo steel, same 125 ksi strength, but impact tested at −150 °F for cryogenic and cold-climate service.
ASTM A453 / ASME SA-453ASTM A453 Grade 660 (A-286)
A-286 bolting for the hottest joints — 130 ksi at room temperature and rated by stress-rupture at 1200 °F, for gas and steam turbines, exhaust and high-temperature process equipment.
Jobs we’ve made in these grades.
