... 2. Payload: 20ton, 30ton,40ton, 60ton, 100ton; 3. Quality level: excellent quality for international market, made in China, WEITAIER brand; ... , reliable performance.4. Frame body Q345B high strength structure steel, automatic submerged arc welding throughout beams, and other ... overall spray primer treatment, paint spraying fine surface quality of maritime anti-corrosion standards.8. Products fully ...