另无折边锥形封头也有直边对接部分。
Another without ruffled taper sealing head has straight edge docking part.
而折边锥形封头一般焊接于两公称直径不同的筒体中间，使两公称直径不同的筒体连为一体！
While ruffled tapered header general welding in two different nominal diameter of cylinder, make two nominal diameter of different cylinder is an organic whole repeatedly!
而折边锥形封头一般焊接于两公称直径不同的筒体中间，使两公称直径不同的筒体连为一体！
While ruffled tapered header general welding in two different nominal diameter of cylinder, make two nominal diameter of different cylinder is an organic whole repeatedly!
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