| Koodu ọkọlọtọ ụlọ ọrụ valvụ European, America na Japanese |
| ISO | Ọkọlọtọ mba ụwa | NF | French National Standard |
| AISI | Ụkpụrụ American Iron na Steel Institute Standards | ASI | American Standards Institute Standard |
| ANSI | American National Standard | JIS | Ụkpụrụ ụlọ ọrụ Japanese |
| API | American Petroleum Institute Standard | MIL | Ụkpụrụ ndị agha Amerịka |
| BS | British National Standard | ASME | American Society of Mechanical Engineers Standards |
| DIN | German National Standard | JPI | Ụlọ ọrụ Japan Petroleum Standard |
| AWS | American Welding Association Standard | ASTM | American Society for Testing and Materials |
| MSS | American Standardization Association maka Valves na Pipe Fittings | | |
Hangzhou Fuyang Bonly Casting Co., Ltd. ugbu a dị ka Bonly Casting, nke e guzobere n'afọ 2007, bụ onye nrụpụta ọkachamara na nkedo nkenke na nkedo shei.Bonly Casting na-ekpuchi ebe karịrị 10,000 square mita, ọkachamara na mmepụta nke nkedo shells, na ihe onwunwe usoro nke carbon ígwè, igwe anaghị agba nchara, obere alloy ígwè, elu chromium cast iron, ductile iron na na.
Bonly nkedo ngwaahịa na-ọtụtụ-eji na mpaghara dị iche iche nke mmiri, petrochemical, nuklia ike, ọgwụ, nri na ndị ọzọ n'ibu ubi, exported na United States, Japan, Canada, European na American mba na mpaghara, ụlọ ọrụ nwere kwa afọ mmepụta ikike nke 6,000 tọn ngwaahịa nkedo.
