LAP JOINT FLANGES MANUFACTURER

OTG Tech Asia is Malaysia and Korea manufacturer to supply Steel Lap Joint Flanges.
OTG Tech Asia is export division and joint venture between Steel Flanges & Fittings Manufacturer – Malaysia’s Petro Parts Sdn Bhd (PPSB) and Korea’s K Tech Global Corporation (KT). We are ISO 9001 certify manufacturers.

Lap joint Flanges fit over the pipe and are most commonly used with Stub End Fittings. A pipe is typically welded to the Stub End and the Lap Joint is free to rotate around the stub end. The benefit of this is that there will not be any issues with bolt hole alignment. However, lap joint flanges and their stub-ends’ ability to hold pressure is about the same as slip-on flanges.

LAP JOINT FLANGES CATEGORIES

Lap joint Flanges with a hub have published specifications that range from 1/2″ thru 24″. Sizes above 24″ are produced as lap joints to slip on dimensions. OTG provides Lap Joint flanges in all material grades, specifications and sizes.

ASME | ASTM Material Specification

  • Carbon Steel: ASTM/ASME A105, A350 LF1, LF2, A266, A694, A765 Gr2 
  • Alloy Steel: ASTM/ASME SA182 F1, F5, F9, F11, F12, F22, F51, A350- LF3 
  • Stainless Steel: ASTM/ASME SA182 F304, 304L, F316, 316L, F310, F317L, F321, F347 
  • Duplex Stainless Steel: ASTM / ASME SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Please contact us if you have any query about our products. EMAIL to otg@otgfitting.com

Lap Joint Flange Manufacturer - www.otgfitting.com
Lap Joint Flange Manufacturer – www.otgfitting.com