B&D has in-depth experience in SMAW, GTAW, GMAW and FCAW welding systems.

Shielded Metal Arc Welding (SMAW) Stick
is a manual, arc-welding process that uses an arc between a covered electrode and the weld pool. The decomposition of the covering on the electrode provides a shielding for the arc. Shielding prevents unwanted gas entrapment (porosity) in the molten-weld puddle.

Gas-Tungsten Arc Welding (GTAW) Tig
is also a manual, arc-welding process that uses an arc between a tungsten electrode (non-consumable) and the weld pool. However, this process uses an external shielding gas such as argon, carbon dioxide, helium, or other gases and may be performed with or without additional filler material.

Gas-Metal Arc Welding (GMAW) or Flux-Core Arc Wedling (FCAW) Mig
are arc welding processes that use an arc between a continuous filler metal electrode (supplied on a spool) and the weld pool. These semi-automatic processes are more popular. In FCAW, flux is included in the core of the tubular electrode wire to provide shielding for the weld puddle. This process is also compatible with the use of an external shield gas.

B&D's strength is partly due to the large diversity in the materials that we use in fabrication and modification. Dependent on the desired application, one material often has more applicable characteristics.

For example:

HASTELLOY (ASME P-44, P-45) is a cobalt-based alloy that is highly resistant to corrosion and excessive heat. It is often the material of choice when fabricating products associated with acetic acids, acid etching, cellophane manufacturing, chlorinating systems, electromagnetizing rolls, expansion bellows, flue gas scrubbers, geothermal wells, pesticide production, pickling systems, phosphoric acid production, SO2 cooling towers, incineration scrubber systems, sulforation systems and HF furnace scrubbers.

TITANIUM (ASME P-51, P-53) is a lightweight metal with a relatively high tensile strength. Due to the fact that titanium is very sensitive to contamination and embrittlement, it is often produced in alloy form and has associated, determined grades of relation. For example: grades 1, 2 and 3 are unalloyed titanium, whereas grade 7 has a slight palladium contribution. Since titanium is fragile, cleanliness and exactness are pertinent to its employment. Any weld performed on this metal may only be implemented with a purge-trailing and shielding gas. Most commonly, argon gas is utilized and may only be substituted with an argon-helium mixture.

STAINLESS STEEL (ASME P-8) chromium and chromium nickel alloy are two comparable metals that are very resistant to high temperatures and corrosion. Typically, these composites are used to fabricate process-piping systems, storage tanks and pressure vessels.

CARBON STEEL (ASME P-1) is the most commonly incorporated metal. Carbon steel is used to produce structural steel, steel flanges, forgings (SA 105), piping (SA53 and SA106), boiler tubes (SA178 and SA192), bars, bolting and lower-temperature, and pressure-vessel plating.

CHROME MOLYBDENUM (ASME P4-P5A) is a low-carbon, alloy steel implemented in high-temperature service. Grade 11 is preferred with moderate to high temperature, general steam applications. For higher temperatures, grade 22 is used. The percentage of manganese ranges from 30-60%. The nominal tensile strength is 60KS.

STELLITE is a cobalt-based alloy welded to internal and external surfaces to provide corrosion-resistant alloy surfacing and erosion-resistant hard facing.

BRONZE ALLOYS (Aluminum bronze, brass, nickel aluminum bronze, manganese bronze and nickel-manganese bronze) are used primarily to repair condensers, pump casings, valve bodies, and various other components.

ALUMINUM (ASME P-21-25) may be supplied in many forms. The largest attribute of aluminum is that it provides a lightweight material that has a moderate tensile strength, good heat-transfer, corrosion-resistant properties, and is an acceptable electrical conductor. Often aluminum is found in alloys that include manganese, magnesium and titanium, which increase their strength and diversify their applicable utility.

COPPER ALLOYS are a non-ferrous metal group that has excellent ductile, thermal, electrical and corrosion-resistant properties. Combining nickel with copper creates an alloy that has a superior heat and corrosion resistance. Therefore, copper nickel (ASME P-34) is more often used to make heat exchangers and condenser tubing, as well as, chemical equipment.

NICKEL COPPER (MONEL) is a nickel alloy (ASME P-43, P-45). Inconel is one such alloy. These metals provide good corrosion resistance combined with high strength at increased temperatures. More commonly, nickel copper is a material of choice when fabricating pump shafts, valves, springs, seamless tubes and pipes, as well as, other applications necessitating these property characteristics.