型号容量KW加热工件（mm）内径***大外径***大宽度***20K-12.210-100280100***20K-22.510-120280100***20K-35.885-180350150***20K-47.8120-280420180***20K-511150-380460200***20K-613.8180-450500220***30K-22.510-120280100***30K-2A2.510-180280100***30K-35.830-180350150***30K-47.855-280420180***30K-51155-380460200***30K-613.855-450500220)