
Specification for application and acceptance of field joint coating and repair of coating and repair of coating defects on external anti-corrosive and thermal insulated coatings for buried steel pipeline
标准号:SY/T 4058-1993
Specification for application and acceptance of field joint coating and repair of coating and repair of coating defects on external anti-corrosive and thermal insulated coatings for buried steel pipeline
标准号:SY/T 4058-1993