The wheel would need to withstand immense and constantly changing stresses as it rotated, so to make the structure more robust, the steel sections were bolted rather than welded together.
Kit cars combine hand-weldedsteel tube chassis and fiberglass bodies with stock engines and accessories.
组装车需要购买者自行将钢管底盘和带有备用引擎及附件的玻璃纤维主体，手工焊接在一起。
3
Transport steel tanks lined with plastic body parts of the steel production, in accordance with the JB/T4735-1997 "weldedsteel pressure vessel" standard.