
Cast Iron Specials for Mechanical and Push-on Flexible Joints for Pressure Pipes for Water, Gas and Sewage — Specification ( Second Revision )
出版:Bureau of Indian Standards

专家解读视频
Cast Iron Specials for Mechanical and Push-on Flexible Joints for Pressure Pipes for Water, Gas and Sewage — Specification ( Second Revision )
出版:Bureau of Indian Standards
专家解读视频