Operator: Hand wheel, Gear OP. Specification: Design - API 600 / ASME B16.34 Face to Face - ASME B16.10 End to End - ASME B16.10 End Flange - ASME B16.5 BW End - ASME B16.25 Test - API598 Special - NACE MR-01-75 Features: Bolted Bonnet or Pressure Se...
The History of Operatorless Elevators: Push Button Control 1886-1895 Period established a critical baseline for all future work. The story of the invention of the operatorless elevator encompasses the history of several disc... L Gray - 《Elevator World》 被引量: 0发表: 2023年 Design of a ...