... the Shanghai people's automatic submerged solitary welding equipment, 100% X-ray scan pressure parts inspection, ensure welding process. 3, kettle circle ... manual interlocking device (manual screw) (3) hand reducer. 5, 2 x 21 metres kettle, can accommodate 20 thousand dollars standard bricks ... , 28.8 meters 3 gas block; 2 x 31 meters kettle, can accommodate 3 million pieces of standard ...