公开(公告)号：US11471968B2

公开(公告)日：2022-10-18

申请号：US16477592

申请日：2018-01-15

Applicant: Saipem S.p.A.

Inventor： Jonathan Bowers

IPC: B23K9/028 ,  B23K9/035 ,  B23K37/02 ,  B23K37/04 ,  B23K37/053 ,  B23K37/06 ,  B23K101/06 ,  B23K101/10 ,  B23K103/02

Abstract: A welding support block supports, from the rear surface of a joint to be welded, a weld pool created during a welding process. The welding support block comprises a block of metal and an outer layer of ceramic material providing a supporting surface. The ceramic material layer has a thickness between 0.25 mm and 1.5 mm. The metal material immediately beneath the ceramic material layer is made of steel. An internal line-up clamp for holding pipes in end-to-end alignment ready for welding may include multiple such welding support blocks. The use of such welding support blocks is particularly useful when laying a sour service carrying pipeline (high H2S content).