About KISARAGI TAKAYASU
About 日本伸銅協
About 建築設備と配管工事
About corrosion resistance
About brass
About water service pipe
About production process
About Copper
About content (quantity)
About mechanical property
About hue
About machinability
About free cutting alloy
About environmental conservation
About Cadmium
About environmental standard
About Lead
About property
About dezincification
About RoHs規制
About Lead-free material
About Nonferrous metallic materials
About Water supply,drainage and sanitary equipment in buildings
About 脱亜鉛腐食
About 黄銅
About 水道施設
About 製造プロセス
About 合金
About 用途