handhole with butt welded flange的意思|示意

对焊法兰手孔 handhold with butt welded flange 对焊法兰手孔 handhole with butt welded flange 对焊法兰手孔 ; 对于焊法兰手孔 manhole with butt welded flange 对焊法兰人孔 ; 对于焊法兰人孔 ..

对于焊法兰手孔 ... metal inertia gas welding金属焊条惰性气体掩护焊; 熔化极惰性气体掩护焊 handhole with butt welded flange对于焊法兰手孔 reinforced weld增强烧焊 ...