管道焊接陶瓷衬垫单边直角衬垫平衬垫单面焊接双面成型焊缝平整

管道焊接陶瓷衬垫单边直角衬垫平衬垫单面焊接双面成型焊缝平整

管道焊接陶瓷衬垫单边直角衬垫平衬垫单面焊接双面成型焊缝平整

焊接陶瓷衬垫/平面衬垫/角焊缝衬垫/圆衬垫单面焊双面成型A1－A8