| 1. | China was the first country in the world to smelt bronze. bronze-smelting technology was developed by the ancient chinese working people approximately 5,000 years ago. as far back as in the shang dynasty ( 16th century b.c.-11th century b.c. ) , the technology of bronze-smelting -- particularly that of smelting and casting bronze ware -- reached a very high level .
中国劳动人民就发明了炼铜技术。 |
| 2. | Cast bronze threaded fittings , classes 125 and 250
125级和250级青铜铸造螺纹配件 |
| 3. | Achievements in smelting and casting bronze in guangxi before tang dynasty
唐代以前广西冶铜铸铜成就简述 |
| 4. | Cbbi cast bronze bearing institute
铸铜轴承研究所 |
| 5. | Stone mould for casting bronze axe
铜斧石铸范 |
| 6. | Cast bronze threaded fittings
铸青铜螺纹管件 |
| 7. | Cast bronze body and end piece , blowout proof silicon bronze stem or 316 stainless steel ball and stem are optional ( 66 trim )
铸青铜阀体和连接端口，防吹出硅青铜阀杆或316不锈钢球体和阀杆为选配件( 66阀内件) 。 |
| 8. | Two - piece , cast bronze construction . the nibco t585 - 70 - sv ball valve provides positive energy isolation . with the valve in the closed position the down stream air exhausts to the atmosphere
两件式铸青铜结构.此球阀具有很好的能量隔离性能.如果这种阀门处于关闭位置,则下游气体将排放到大气中 |
