We are an ISO 9001:2015 Certified Manufacturer of forged steel flanges, with a specialization in the manufacture of large diameter, high-pressure, high-yield flanges.

Product Standards

  • ASME-ANSI-B16.5 and B16.47 Series A & B / MSS SP44 / CSA and Industry Standards
  • API 6A Flanges 2,000#, 3,000#, 5,000#, 10,000#, 15,000#, per API specification without monogram

Flange Sizes

  • 150# – 300# from 12” to 48” (Preferred material: A350-LF2 and A694-F42 to F70)
  • 600# – 900# – 1500# – 2500#: All sizes


Carbon Steel:
– ASTM A105, A350LF2, A694F42, A694F52, A694F60, A694F65, A694F70, A707L3CL3, A350LF6 CL2

Quick Turnarounds and Specials

  • Stainless Steel
  • Duplex Steel/Super Duplex Steel
  • Nickel Alloys
  • Chrome
  • Alloy


Equipped with a large park of Fronius cladding machines, DL Flange is ready for your biggest projects. We can weld overlay Flanges, Customized Forgings, or Fittings with Inconel 625, Incoloy 825, SS 316L, CuNi, Titanium etc. on base material like: A105, A350 LF2, A694 F65, A182 F22, A182 F1, A182 F51, AISI 4130, AISI 8630 using TIG process. Max. OD 3000 mm, min bore 25,4 mm, and max height 3500 mm. We perform groove overlay, full bore cladding, and external cladding.

We have over 1200 approved welding procedures.

We guarantee the thickness of the cladding layer using UT current, Eddy current, and the ferrite content required by our clients using PMI testing methods.