Requirements for sitewelded circumferential seams shall be agreed on a case by case basis prior to order.
现场环缝焊接要求在签订订单之前，具体要求具体的商定。看看怎么样？
2
Long rails in jointless track are usually made on welded rail site or in railway welded rail factory.
无缝线路长钢轨通常由铁路焊轨厂或现场焊轨基地焊接。
3
Following delivery to site, columns will be re-assembled and fully welded. Ideally this final assembly should occur within, or close to, pick-up radius of the erection crane.