Manual Welding

Manual Welding

From prototype to full-scale production, 3SI offers precision welding services to meet our customers’ exact specifications.
Through the use of state-of-the-art equipment, we offer precision arc and metal inert gas (MIG) welding services across a variety of industries, including agricultural, mining, aerospace, construction and Energy, among many others.
Each of our highly skilled personnel are AWS-certified to D1.1, D1.6, D9.1, and D10.9 standards, and our expertise includes a number of welding methods:

  • Seam welding
  • Shielded metal arc welding (SMAW)
  • Gas metal arc welding (GMAW): MIG welding
  • Flux core arc welding (FCAW)
  • Gas tungsten arc welding (GTAW)

Our precision arc and MIG welding services are suitable for a vast array of metals, including carbon steel, stainless steel, Hardox wearplate, Strenx, as well as other alloys.

For high-precision and large-scale projects, we offer fully automated and CNC-controlled welding services, capable of handling virtually any customer specification while maintaining the tightest tolerances available in the industry.

Value-Added Services

In addition to welding, we offer a number of custom metal fabrication and secondary services, which thereby allows us to complete even the most complex projects under one roof. Our value-added services include machining, mechanical assembly, kitting, packaging, painting and galvanizing, among others. Our breadth of services allows us to provide customers with competitive prices, reduced lead times, and peace of mind that their project is in the right hands.

Additionally, customers can rest assured, knowing the quality is never a question with 3SI. As an ISO 9001/2015 certified manufacturer, we offer an array of inspection procedures and a number of testing processes, including die penetrant and non-destructive testing (NDT), along with dimensional inspections using calibrated measuring equipment.

Precision Welding Capabilities

Welding ProcessSubmerged Arc
Seam Welding
SMAW (Shielded Metal Arc Welding)
GMAW (Gas Metal Arc Welding)
FCAW (Flux Core Arc Welding)
GTAW (Gas Tungsten Arc Welding)
Dual Wire Submerged Arc / MIG
Welding OperationFully Automated
CNC Controlled
Mechanical Beveling
MaterialCarbon Steel
Stainless Steel
Hardox Wear Plate
WidthUp to 12 ft 
LengthUp to 80 ft 
TolerancesTightest in Industry 
TestingDimensional (with Calibrated Measuring Equipment)
Die Penetrant
Non Destructive Testing (NDT)
Additional ServicesMetal Finishing
Mechanical Beveling
Weld Assembly
Mechanical Assembly
Production VolumePrototype to Production 
Typical Lead Time1 to 2 weeks 

Additional Information

Industry FocusAgricultural
Contract Manufacturing
High-Quality Components
Intended ApplicationLifting Equipment
Truck Cranes
Wear Parts
Boom Components
Frame Rails
Industry StandardsISO 9001:2015 Certified
AWS-D1.1 Certified
File FormatsAutoCAD Inventor

Trust Us with Your Next Project

Utilizing our core values of maintaining the finest quality, integrity, and craftsmanship, 3SI strives to ensure our customers’ success at every step of the process.

To learn more about 3SI and how we can apply our metalworking capabilities to  your next project ,please contact us, We look forward to working with you.