Marine large diameter lap welded steel flange

Lap welding is to lap the two base materials to be welded together, with the lap distance ranging from 2-20mm, which is different from butt welding. Welding can be fillet welding, spot welding and ultrasonic welding; Determine the amount of overlap as required.Flat Face Flange       Material     Carbon steel ASTM A105, A350 LF1, LF2, LF3, LF6, CL1/CL2,; A694 F52, F60, F65, F70; A516 Gr. 60, 70; BS-EN 10222-2 P245GH, P280GH; EN10222-4 P355NH, P355QH; EN10273 P250GH, P265GH; DIN 17243 C22.8; VD-TUEV350/3 C21; GB/T 1591 Q345B, Q420B; NB/T 47008 16Mn,20#; BS 10250-2 S235JRG2;   Stainless steel ASTM A182 F304/304L, F316/316L, F316H, F304H, F321…