Detail: BOX column production line is special machinery for producing beams of large bridge, high buildings. Our whole production line starts from materials preparing, via assembling baffles, assembling BOX, electro-slag welding, submerged arc welding, end face processing, and finishes at shot blasting and cleaning.. Model Number: Brand Name: Payment Terms: L/ C, T/ T Minimum: Certification: Delivery Time: 30 days Supply Ablity: