A welding table / desk made of cast iron parts fitter to weldment. Foundry industry is difficult to completely solve the problem of environmental pollution, and prone to casting defects, while the use of welding technology and welding parts can be relatively easy to solve these problems. Second, in ensuring the welding table / fitter platform strength, optimizing the thickness dimension of the premise, to minimize the welding table / fitter Weight. Structural weldment design, be sure to make ribs force to avoid weld force. Use the constituent structural weldments plate is often not needed strength, but stiffness needed, namely when welding thick plate deformation is small, or when the load deformation weldments. Some individual slabs are often thin plates can be used with appropriate number of ribs instead, which not only reduces the total weight carrying capacity will increase. Third, choose the right size of the fillet weld length and other parameters. There are a considerable number of designers often "strength of the weld" and "join the weld" confused with each other, are often required when designing weldments all penetration welds, fillet bigger the better tendencies. In fact, do not have to choose penetration or penetration, is the designer should be carefully considered decision. Should carefully study the stress state of welded parts, and then decide fillet weld size and length to be used. After fillet welds can, try not to open slope on the mouth parts; intermittent welds can never required full weld on the full length direction, so you can save the cost of the welding process, and second, you can also reduce the welding deformation then welded to reduce a beveling step.